Diamonds, Kimberlites, and Related Geology May 2015Did Diamond bearing orangeites originiate from MARID veined peridoites in the lithospheric mantle….. IN Nature Communications Haggerty

THE SHEAHAN LITERATURE SERVICE

Diamonds, Kimberlites, and Related Geology

May 2015

Highlights

The Sheahan Literature Service is dedicated to advancing research driven mineral exploration by increasing the awareness and availability of scientific publications and technical resources.

Sheahan Literature Services Patricia Sheahan

Email: [email protected]

What lies behind you and what lies in front of you, pales in comparison to what lies inside you. Ralph Waldo Emerson

Then there’s hope a great man’s memory may outlive his life… William Shakespeare

One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike – and yet it is the most precious thing we have. Albert Einstein

"No one gossips about other people's virtues." - Bertrand Russell

"Some books are to be tasted, others to be swallowed, and some few to be chewed and digested." Francis Bacon

Guiliani, Phillips, Woodhead, Kamenetsky, Florentini, Maas, Soltys, Armstrong Did Diamond bearing orangeites originiate from MARID veined peridoites in the lithospheric mantle….. IN Nature Communications Haggerty Discovery of a kimberlite pipe and recognition of a diagnostic botanical indicator in NW Liberia IN: Economic Geology Kamenetsky and Yaxley Carbonate silicate liquid immiscibility in the mantle propels kimberlite magma ascent. IN: Geochimica et Cosmochimica Acta Milami, Nestola, Alvarro, Pasqual, Mazzuccheli, Domenghetti, Geiger Diamond garnet geobarometry: the role of garnet Compressibility and expansivity IN: Lithos Patterson The composition of kimberlite magma with implications for the Earth’s environment. Phd. Thesis McGill University November 2014 available

GIA’s Topical Session, “"T131. Gemological Research in the 21st Century: Exploration, Geology, and Characterization of Diamonds and other Gem Minerals,” Baltimore, Maryland, USA – for GSA 2015! November 1-4 2015 In addition to Dona Dirlam, Jim Shigley, and Wuyi Wang of GIA, our distinguished advocates are Lee Groat, Thomas Stachel, Barb Dutrow, Howard Coopersmith, Nancy McMillan, and Skip Simmons. The submission form is now “live” and can be found here: http://www.geosociety.org/meetings/2015/sessions/topical.asp The abstracts deadline is 11:59 p.m., Pacific Time, 11 August 2015. We are seeking posters as well as oral presentations and details may be found here: http://community.geosociety.org/gsa2015/science-careers/sessions

AWARD: Rudy Wahl ( prospector) was presented with The Bernie Schneiders’ discovery of the year award for 2014 by NWOPA in Thunder Bay, Ontario. The Prairie Lake Niobium deposit. http://users.renegadeisp.com/~rwahl/NWOPA%202015.htm

Pat Sheahan

Honorary Research Associate University of British Columbia /MDRU

Sheahan&Literature&Service& &&&&&&&&& & & & & &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&Diamonds&Newsletter&–&May&2015&&

NEW SCIENTIFIC LITERATURE (by Source) REF # AUTHOR YEAR TITLE SOURCE REGION/LOCATION KEYWORDS

Page 1 (Scientific by Source) © Sheahan Literature Service. Printed in Canada.

&1 D1505-01 Lowenstein, J.B. 2015 Bursting the bubble of

melt inclusions. American Mineralogist, Vol. 100, pp. 672-673.

Technology

Melt inclusions

&2 D1505-02 Ernst, R.E. 2015 Large igneous

provinces. Chapter 9 on carbonatites, kimberlite and lamproites.

Cambridge University Press, 653p. US$ 130.00 ISBN 978-0-521-87177-8, Chapter 9

Global

Overview

&3 D1505-03 Giuliani,

G.,Pivin, M., Fallick, A.E., Ohnenstetter, D., Song, Y., Demaiffe, D.

2015 Geochemical and oxygen isotope signatures of mantle corundum megacrysts from the Mbuji-Mayi kimberlite, Democratic Republic of Congo and the Changle alkali basalt, China.

Comptes Rendus Geoscience, in press available

Africa, Democratic Republic of Congo, China

Deposit - Mbuji-Mayi

&4 D1505-04 Kessel, R.,

Pettke, T., Fumagalli, P.

2015 Melting of metasomatized peridotite at 4-6 Gpa and up to 1200 C: an experimental approach.

Contributions to Mineralogy and Petrology, Vol. 169, pp. 37-

Technology

Peridotite

&5 D1505-05 Zahirovic, S.,

Muller, R.D., Seton, M., Flament, N.

2015 Tectonic speed limits from plate kinematic reconstructions.

Earth and Planetary Science Letters, Vol. 418, pp. 40-52.

Global

Plate tectonics

&6 D1505-06 Kalnins, L.M.,

Simons, F.J., Kirby, J.F., Wang, D.V., Olhede, S.C.

2015 On the robustness of estimates of mechanical anisotropy in the continental lithosphere: a North American case study and global reanalysis.


North America, Canada, USA

Tectonics

&7 D1505-07 Long, M.D., He,

X., Lynner, C. 2015 Lowermost mantle flow

at the eastern edge of the African large low shear velocity province. Afar


Africa

Geophysics - seismics

&8 D1505-08 Youssof, M.,

Thybo, H., Artemieva, I.M., Levander, A.

2015 Upper mantle structure beneath southern Africa cratons from seismic finite-frequency P and S body wave tomography.


Africa


&9 D1505-09 Furlani, S.,

Ninfo, A. 2015 Is the present the key to

the future? Earth Science Reviews, Vol. 142, pp. 38-46.

Global

Geomorphology

&10 D1505-10 Haggerty, S.E. 2015 Discovery of a

kimberlite pipe and recognition of a diagnostic botanical indicator in NW Liberia.

Economic Geology, Vol. 110, 4, pp. 851-856.

Africa, Liberia

Botany - Camp Alpha




&1 D1505-11 Palke, A.C.,

Geiger, C.A., Stebbins, J.F.

2015 An investigation of local Fe2+ order-disorder in a mantle grospydite garnet using paramagnetically shifted 27 Al and 29 Si MAS NMR resonances.

European Journal of Mineralogy, in press available

Africa, South Africa

Deposit - Roberts Victor

&2 D1505-12 Shatskiy, A.,

Gavryushkin, P.N., Litasov, K.D., Korolenva, O.N., Kupriyanov, I.N., Borzdov, Y.M., Sharygin, I.S., Funakoshi, K., Palyanov, Y.N., Ohtani, E.

2015 Na-Ca carbonates synthesized under upper mantle conditions: Raman spectroscopic and X-ray diffraction studies.

European Journal of Mineralogy, Vol. 27, pp. 175-184.

Technology

Carbonatites, nyereite, shortite mineralogy

&3 D1505-13 Fraser Institute 2015 Fraser Institute annual

survey for 2014. Mining jurisdictions listed.

Fraser Institute, 97p. Pdf Global

Legal

&4 D1505-14 Ballmer, M.D.,

Conrad, C.P., Smith, E.I., Johnsen, R.,

2015 Intraplate volcanism at the edges of the Colorado Plateau sustained by a combination of triggered edge-driven convection and shear-driven upwelling.

Geochemistry, Geophysics, Geosystems Gcubed, Vol. 16, 2, pp. 366-379.

USA, Colorado Plateau

Convection

&5 D1505-15 Macris, C.A.,

Manning, C.E., Young, E.D.

2015 Crystal chemical constraints on inter-mineral Fe isotope fractionation and implications for Fe isotope disequilibrium in San Carlos mantle xenoliths.

Geochimica et Cosmochimica Acta, Vol. 154, pp. 168-185.

USA, California

Xenoliths

&6 D1505-16 Kamenetsky,

V.S., Yaxley, G.M.

2015 Carbonate-silicate liquid immiscibility in the mantle propels kimberlite magma ascent.

Geochimica et Cosmochimica Acta, Vol. 158, pp. 48-56.

Mantle

Kimberlite magmatism

&7 D1505-17 Das, J.N. 2015 Prospect of gemstones

of India in 21st century. Geological Society of America Annual Meeting, Oct. 24, 1p. Abstract

India

Gemstones

&8 D1505-18 Majka, J.,

Rosen, A., Janak, M., Froitzheim, N.,

2014 Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its

Geology, Vol. 42, 12, pp. 1107-110.

Europe

Microdiamonds




Klonowska, I., Maneck, M., Sasinkova, V., Yoshida, K.

exhumation by the "vacuum-cleaner" mechanism.

&1 D1505-19 Rey, P.F. 2015 The geodynamics of

mantle melting. Geology, Vol. 43, 4, pp. 367-368.

Mantle

Melting

&2 D1505-20 ICMM 2015 Managing serious

health and safety incidents in mining: ICMM launches good practice guide.

ICMM, April, 32p. Global

Safety guide

&3 D1505-21 ICMM 2015 Engaging with society -

ICMM releases annual review 2014.

ICMM, March, 14p. Pdf Global

CSR

&4 D1505-22 He, J., Harris,

J.B., Sawada, M., Behnia, P.

2015 A comparsion of classification algorithms using Landsat-7 and Landsat-8 data for mapping lithology in Canada's Arctic.

International Journal of Remote Sensing, Vol. 36, 8, pp. 2252-2276.

Canada, Central Victoria Island

Lithology mapping

&5 D1505-23 Griffin, W.L.,

Gain, S.E.M., Toledo, V., O'Reilly, S.Y., Jacob, D., Pearson, N.J.

2015 Corundum, moissanite and super reducing conditions in the upper mantle beneath the lower ( southern) Galilee ( Israel).

Israel Geological Society 2015, 1p.poster

Europe, Isreal

Mineralogy

&6 D1505-24 Toledo, V.,

Apter, D.B., Ward, J.

2015 High pressure indicator minerals from the Rakefet magmatic complex ( RMC), Mt. Carmel, Israel.


Europe, Isreal

Mineralogy

&7 D1505-25 Toledo, V.,

Ward, J., de Wit, M., Spaggiari, R., Coopersmith, H., Wald, R.

2015 A transient fluvial placer in the mid reach of the Kishon Valley northern Israel: initial results of follow up exploration.


Europe, Israel

Exploration results

&8 D1505-26 Elazar, O.,

Kessel, R., Navon, O.

2015 Fluids and melts in equlibrium with carbonated hydrous eclogite system at 4-6 Gpa and 900-1200 C.

Israel Geological Society 2015, Abstracts 1p.

Technology

Eclogites

&9 D1505-27 Jablon, M.,

Navon, O. 2015 The role of high density

microinclusion fluids in the growth of monocrystalline diamonds.


Africa, Guinea, South Africa

Fibrous diamonds

&10




D1505-28 Katzir, Y., Anenburg, M., Kaminchik, J., Segev, A., Blichert-Toft, J., Spicuzza, M.J., Valley, J.W.

2015 Garnet pyroxenites as markers of recurring extension and magmatism at the rifted margins of the Levant basin.


Europe, Israel, Mt. Carmel

Pyroxenites

&1 D1505-29 Navon, O. 2015 Granulitic xenoliths and

the formation of the lower crust below southern Syria and northern Israel and Jordan.


Europe, Syria, Israel, Jordan

Mineralogy

&2 D1505-30 Stein, M. 2015 Alkali basalts from the

Golan and Galilee - signal from the early differentiation of the Earth mantle.


Europe, Arabian - Nubian shield

Metasomatism

&3 D1505-31 Jessell, M.,

Santoul, J., Baratoux, L., Youbi, N., Ernst, R.E., Metelka, V., Miller, J., Perrouty, S.

2015 An updated map of West African mafic dykes.

Journal of African Earth Sciences, in press available

Africa, west Africa

Dyke swarms

&4 D1505-32 McCoy-West,

A.J., Bennett, V.C., O'Neill, H. St. C., Hermann, J., Puchtel, I.S.

2015 The interplay between melting, refertilization and carbonatite metasomatism in off-cratonic lithospheric mantle under Zealandia: an integrated major, trace and platinum group element study.

Journal of Petrology, Vol. 56, 3, pp. 563-604.

Mantle, Zealandia

Carbonatite

&5 D1505-33 Milami, S.,

Nestola, F., Alvarro, M., Pasqual, D., Mazzucchelli, M.L., Domeneghetti, M.C., Geiger, C.A.

2015 Diamond garnet geobarometry: the role of garnet compressibility and expansivity.

Lithos, in press available 38p.

Technology

Garnet geobarometry

&6 D1505-34 Zhang, Z.,

Fedortchouk, Y., Hanley, J.J.

2015 Evolution of diamond resorption in a silicic aqueous fluid at 1.3GPa: application to kimberlite emplacement and mantle metasomatism.

Lithos, in press available 52p.

Canada, Northwest Territories

Deposit - Ekati

&7 D1505-35 Xu, X., Kynicky,

J., 2015 A case example of the

importance of Lithos, In press available 60p.

China

Carbonatite




Chakhmouradian, A.R., Li, X., Song, W.

multianalytical approach in deciphering carbonatite petrogenesis in South Qinling orogen: Miaoya rare-metal deposit, central China.

&1 D1505-36 Al Mishwat, A.T. 2015 CIPWFULL: a software

program for calculation of comprehensive CIPW norms of igneous rocks. Program available as a download from journal

Mathematical Geosciences, Vol. 47, 4, pp. 441-453.

Technology

Igneous rock compositions

&2 D1505-37 Belogub, E.V.,

Krivovichev, S.V., Pekov, I.V., Kuznetsov, A.M., Yapaskurt, V.O., Kitlyarov, V.A., Chukanov, N.V., Belakoviskiy, D.I.

2015 Nickelpicromerite, K2Ni(SO4)2*6H2O, a new picromerite group mineral from Slyudorudnik, South Urals, Russia.

Mineralogy and Petrology, Vol. 109, 2, pp. 143-152.

Russia, Urals

Mineralogy

&3 D1505-38 Ferracutti, G.R.,

Gargiulo, M.F., Ganuza, M.L., Bjerg, E.A., Castro, S.M.

2015 Determination of the spinel group end-members based on electron microprobe analyses.

Mineralogy and Petrology, Vol. 109, 2, pp. 153-160.

Technology

Geochronology

&4 D1505-39 Giuliani, A.,

Phillips, D., Woodhead, J.D., Kamenetsky, V.S., Florentini, M.L., Maas, R., Soltys, A., Armstrong, R.A.

2015 Did diamond bearing orangeites originate from MARID-veined peridotites in the lithospheric mantle?

Nature Communications, Apr. 17, 10p. Pdf

Mantle

Orangeites

&5 D1505-40 Gazel, E. 2015 How did the Earth's

continents form? Scientists move big step closer to solving mystery. Extracted from Nature Geoscience March 31, 2105

Nature Geoscience, April 3, 1p.

Mantle

Melting

&6 D1505-41 Marquardt, H.,

Miyagi, L. 2015 Slab stagnation in the

shallow mantle linked to an increase in mantle viscosity.

Nature Geoscience, Vol. 8, pp. 311-314.

Mantle

Subduction

&7 D1505-42 Nadeau, O.,

Cayer, A., Pelletier, M., Stevenson, R.,

2015 The Paleoproterozoic Montveil carbonatite-hosted-REE-Nb deposit, Abitibi, Canada:

Ore Geology Reviews, Vol. 67, pp. 314-335.

Canada, Quebec

Carbonatite




Jebrak, M. geology, mineralogy, geochemistry and genesis.

&1 D1505-43 Silaev, V.I.,

Karpov, G.A., Rakin, V.I., Anikin, L.P., Vasiliev, E.A., Filippov, V.N., Petrovskiy, V.A.

2015 Diamonds in the products of the Tolbachik fissue eruption 2012-2013, Kamchatka. IN RUSSIAN

Paper courtesy of F. Kaminsky , 1p. Abstract in english and references are in english ( 27p.)

Russia, Kamchatka

Diamond morphology

&2 D1505-44 Patterson, M.V. 2014 The composition of

kimberlite magma with implications for the Earth's environment. Discussion on many kimberlites ( Nikos, Nanuq, Foxtrot, Renard, Buffalo Head Hills, comparisons global

Ph.d Thesis McGill University November, 139p. Pdf file available

Global, Canada, Quebec, Nunavut, Alberta

Magma composition

&3 D1505-45 Izuka, T.,

Yamaguchi, T., Hibiya, Y., Amelin, Y.

2015 Meteorite zircon constraints on the bulk Lu-Hf isotope composition and early differentiation of the Earth.

PNAS, Apr. 13, 10.1073/pnas.1501658112

Mantle

Meteorites

&4 D1505-46 Kanouo, N.S.,

Yongue, R.F., Ekomane, E., Njonfang, E., Ma, C., Lentz, D.R., She, Z.,

2015 U Pb ages for zircon grains from Nsanaragati alluvial gem placers: its correlation to the source rocks.

Resource Geology, Vol. 65, 2, pp. 103-121.

Africa, Cameroon

Zircons

&5 D1505-47 Tkalcic, H. 2015 Complex inner core of

the Earth: the last frontier of global seismology.

Reviews of Geophysics, Vol. 52, 4, pp.

Mantle


&6 D1505-48 Loomis, I. 2015 Earth's tectonic plates

skitter about. Sciencemag.org, Mar. 20, 1p.

Global

Geodynamics

&7 D1505-49 Zepf, V. 2013 Rare earth elements - a

new approach to the nexus of supply, demand and use: exemplified along the use of neodymium in permanent magnets.

Springer Verlag Book, 157p. $ 129.00 ISBN 978-3-642-35458-8

Technology

REE

&8 D1505-50 Molnar, P. 2015 Gravitational instability

of mantle lithosphere and core complexes.

Tectonics, Vol. 34, 3, pp. 478-487.

Mantle

Core

9

Sheahan&Literature&Service& & & & & &&&& &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&Diamonds&Newsletter&–&May&2015&&

INDUSTRY NEWS (by Source) REF # AUTHOR YEAR TITLE SOURCE REGION/LOCATION KEYWORDS

Page 1 (Industry News) © Sheahan Literature Service. Printed in Canada.

&1 D1505-51 AllAfrica

2015 Production at Mwadui

Diamond mine rises. 27% to 57,542 carats

Allafrica.com, Apr. 17, 1/4p.

Africa, Tanzania

News item - Petra

&2 D1505-52 Grynberg, R.

2015 Diamond cutting

industry in Botswana. Allafrica.com, Apr. 22, 2p.

Africa, Botswana

News item - opinion comments

&3 D1505-53 AllAfrica

2015 Diamond miners on

looting spree. Allafrica.com, Mar. 27, 1/4p.

Africa, Zimbabwe

News item - Marange

&4 D1505-54 Alrosa

2015 Alrosa Investors-Day

presentation. Detailed locations, projects, financials

Alrosa, Apr. 8, 45ppt Russia

News item - Alrosa

&5 D1505-55 Alto Ventures

Ltd.

2015 Alto Ventures recovers kimberlite indicator minerals on the West Fisher claims northwest of the Pikoo diamond discovery, northern Saskatchewan.

Alto Ventures Ltd., Apr. 1, 1p.

Canada, Saskatchewan

News item - press release

&6 D1505-56 Alto Ventures

Lts.

2015 Priority targets from high resolution airborne magnetic survey over West Fisher claims northwest of Pikoo diamond discovery, northern Saskatchewan.

Alto Ventures Ltd., Apr. 22, 1p.



&7 D1505-57 Botswana

Diamonds plc.

2015 Botswana Diamonds expands exploration with three new licences in the central part of Botswana. ( Alrosa)

Botswana Diamonds plc., Apr. 15, 1p.

Africa, Botswana



Diamonds plc.

2015 Interim results for the six months to 31 December 2014. JV Alrosa

Botswana Diamonds plc., Mar. 27, 3p.

Africa, Botswana



Diamonds plc.

2015 Botswana Diamonds Plc. Fundraising of lbs 282,500.

Botswana Diamonds plc., Mar. 31, 1p.

Africa, Botswana


&10 D1505-60 Brazil Minerals,

Inc.

2015 Brazil Minerals, Inc. reports largest rough diamond & expected further cash flows from sand products.

Brazil Minerals, Inc., Apr. 6, 1p.

South America, Brazil


&11 D1505-61 Britannia

Mining, Inc.

2015 Announces two key hires for its diamond division ( Commodities

Britannia Mining, Inc., Mar. 31, 1p.

USA





trading division)

&1 D1505-62 Chalice Gold

Mines Limited

2015 Webb diamond project update. ( Meteoric Resources Limited press release)

Chalice Gold Mines Limited, Mar. 27, 1p.

Australia


&2 D1505-63 Commerce

Resources Corporation

2015 Commerce Resources completes 22 drill holes at the Ashram rare earth deposit.

Commerce Resources Corporation, Apr. 15, 2p.

Canada, Quebec


&3 D1505-64 Commerce

Resources Corporation

2015 Completes floatation pilot plant for Ashram rare earth deposit.

Commerce Resources Corporation, Apr. 20, 2p.

Canada, British Columbia


&4 D1505-65 Creamers

Mining Weekly

2015 Norton Rose Fulbright advises on $ 370 m financing of world's largest new diamond project. Gahcho Kue

Creamers Mining Weekly, Apr. 10, 1/4p.


News item - Mountain Province


Mining Weekly

2015 Debswana to cap output due to slow demand.


Africa, Botswana

News item - Debswana


Mining Weekly

2015 Rio Tinto's Zimbabwe diamond production falls 42% in Q1. Murowa


Africa, Zimbabwe

News item - Rio Tinto


Mining Weekly

2015 Flawless 100 carat diamond sells for $ 22.1 million at N.Y. auction.



News item - diamond notable


Mining Weekly

2015 De Beers starts three year global sightholder sales contracts.

Creamers Mining Weekly, Mar. 31, 1/4p.

Global

News item - De Beers

&9 D1505-70 De Beers Group

of Companies

2015 Paul Rowley: we must all invest now to increase our future returns. VP of Global Sightholder Sales speaking at Dubai Diamond Conference.

De Beers Group of Companies, Apr. 21, 1p.

Global


&10 D1505-71 Diamcor Mining

Inc.

2015 Fourth quarter diamond sales and upgrade progress at Krone-Endor at Venetia.

Diamcor Mining Inc., Apr. 15, 4p.



&11 D1505-72 Diamonds.net

2015 Zimbabwe's Vice

President Mnangagwa colluded with the army

Diamonds.net, Apr. 1, 1/4p.

Africa, Zimbabwe

News item - legal




and Chinese .. Accused of stealing diamonds.


2015 Production drops over

refinancing difficulty in 2014.


Russia, Yakutia

News item - Alrosa


2015 Diamcor's rough sale

achieves $ 842 K ( Krone-Endora)



News item - Diamcor


2015 NGOs urge Zimbabwe

to consult with stakeholders in Marange merger.


Africa, Zimbabwe

News item - legal


2015 Petra's revenue - 41%

to $ 96 m in 3 Q. Diamonds.net, Apr. 16, 1/4p.


News item - Petra


2015 Severalmaz appoints

Pismenny as CEO. Diamonds.net, Apr. 16, 1/4p.

Russia, Arkangel

News item - Severalmaz


2015 Lucapa recovers a 63 ct

diamond from Lulo. Diamonds.net, Apr. 17, 1/4p.

Africa, Angola

News item - Lucapa


2015 Investigators probe

Marange diamond firm Jinan for transferring $ 546 million.


Africa, Zimbabwe

News item - Jinan


2015 GIA's Dreams of

Diamonds exhibit comes to southern California. Seven of world's finest diamond houses to showcase exceptionally rare diamonds……


USA, California

News item - GIA exhibit


2015 OGI debuts symmetry

leakage technology. Diamonds.net, Apr. 20, 1/4p.

Technology

News item - OGI


2015 Alrosa's first quarter

diamond production + 14%.


Russia

News item - Alrosa


2015 Lucapa's third sale of

Lulo production achieves $ 790K.


Africa, Angola

News item - Lucapa


2015 Mugabe taps reserve

bank to stop diamond Diamonds.net, Apr. 4, 1/4p.

Africa, Zimbabwe

News item - legal




smuggling.


2015 Contrasting quarters …

2014 and 2015. Cause and effect.

Diamonds.net, Apr. 4, 1p. Global

News item - prices


2015 Chidhakwa faces

pressure to deliver diamond royalties.


Africa, Zimbabwe

News item - legal


2015 ABN AMRO returns to

India. Diamonds.net, Mar. 26, 1/4p.

India

News item - ABN Amro


2015 Teeling says diamonds

shine in a resource world filled with gloom.

Diamonds.net, Mar. 27, 1/4p.

Global

News item - Botswana Diamonds


2015 Stellar Diamonds

narrows loss, seeks to raise $ 20 m.


Africa, Guinea, Sierra Leone

News item - Stellar


2015 ABN Amro … diamond

industry lacks bankability, not liquidity.


Global



2015 De Beers announces 84

sightholders. Diamonds.net, Mar. 31, 1/4p.

Global



2015 Refusals exceed 30% at

De Beers March sight. Diamonds.net, Mar. 31, 1/4p.

Global



2015 Belgian court returns

diamonds to Zimbabwe. Diamonds.net, Mar. 31, 1/4p.

Africa, Zimbabwe, Belgium

News item - legal

&10 D1505-94 Dominion

Diamond Corporation

2015 Dominion Diamond Corporation files annual report on Form 40-F with SEC.

Dominion Diamond Corporation , Apr. 20, 2p..




Diamond Corporation

2015 Dominion reports Diavik diamond mine first calendar quarter production.

Dominion Diamond Corporation , Apr. 21, 5p.




Diamond Corporation

2015 Dominion Diamond Corporation reports continued strong operating results

Dominion Diamond Corporation , Apr. 8, 4p.






supporting dividend declaration.


Diamond Corporation

2015 Dominion Diamond Corporation files technical report for the Diavik diamond mines.

Dominion Diamond Corporation , Mar. 26, 2p.



&2 D1505-98 Dunnedin

Ventures Inc.

2015 Dunnedin files maiden resource report including additional target for further exploration. Kahuna and Notch

Dunnedin Ventures Inc., Mar. 31, 1p.

Canada, Nunavut


&3 D1505-99 Durango

Resources Inc.

2015 Durango to focus on gold in the James Bay region. Not to continue LOI for the Lucky 7 diamond property.

Durango Resources Inc., Apr. 1, 1p.

Canada, Quebec


&4 D1505-100

Durango Resources Inc.

2015 Durango signs non binding LOI for diamonds in James Bay.

Durango Resources Inc., Mar. 24, 1p.

Canada, Quebec, Otish Mtns


&5 D1505-101

Golden Saint Resources Ltd.

2015 GSR boss says new licences mean full steam ahead in Sierra Leone.

Golden Saint Resoures Ltd., Apr. 14, 1p.

Africa, Sierra Leone


&6 D1505-102

Golden Saint Resources Ltd.

2015 Quarterly update .. Moa project, Baja project and Tongo project brief summaries.

Golden Saint Resoures Ltd., Mar. 27, 1p.



&7 D1505-103

Idex Magazine

2015 From clicks to bricks - Blue Nile.

Idex Magazine, Apr. pp. 38-45.

Global

News item - Blue Nile

&8 D1505-104

Idex Magazine

2015 Get moving to mobile. Idex Magazine, Apr. pp. 46-55.

Global

News item - online for consumers

&9 D1505-105

Idex Magazine

2015 From on-line to in-store: could click and collect be the next big thing?

Idex Magazine, Apr. pp. 56-62.

Global

News item - online for consumers

&10 D1505-106

Idex Memo

2015 Just a little disruption… discusses DDI's approach and work to date.

Idex Online, Apr. 2, 1p. Global

News item - DDI

&11 D1505-107

Idex Memo

2015 If you have to pinpoint three factors from the diamond business

Idex Online, Apr. 9, 1p. Global

News item - jewellery




affecting the retail world of fine jewelery, what would you pick?

&1 D1505-108

Index Memo

2015 Rocking the boat… Marques de Morais overview.

Idex Online, Mar. 26, 1p. Africa, Angola

News item - legal

&2 D1505-109

Idexonline

2015 Gemfields emerald production hits 9.9 million carats in Q3.

Idexonline.com, Apr. 15, 1p.

Africa, Zambia

News item - Gemfields

&3 D1505-110

Idex Memo

2015 Going up or down: where are diamond prices really headed?

Idexonline.com, Apr. 16, 1p.

Global

News item - prices

&4 D1505-111

Alrosa

2015 Alrosa's executive Committtee considered the 2014 exploration performance to declare all the targets successfully achieved.

[email protected], Apr. 17, 2p.

Russia


&5 D1505-112

Kennady Diamonds Inc.

2015 Kennady Diamonds updates Kennady North drill program.

Kennady Diamonds Inc., Apr. 20, 3p.



&6 D1505-113


2015 Kennady Diamonds announces Kelvin diamonds recovery results.




&7 D1505-114


2015 Kennady Diamonds recovers 436 tonne Kelvin bulk sample: intersects 76 meters of kimberlite at Faraday.




&8 D1505-115


2015 Kennady Diamonds extends strike of Faraday and intersects 52 meters of kimberlite.

Kennady Diamonds Inc., Mar. 30, 4p.



&9 D1505-116

Kimberley Diamonds Ltd.

2015 Ellendale diamond mine to continue operating in FY2016. Processing high grade stockpiles from Ellendale E4 and coarse tailings from E9.

Kimberley Diamonds Ltd., Apr. 1, 2p.

Australia


&10 D1505-117

Lucapa Diamond Company

2015 Chairman's summary of year to date … Lulo

Lucapa Diamond Company, Apr. 1p.

Africa, Angola





&1 D1505-118


2015 Large 63 carat type 11a diamond recovered at Lulo.

Lucapa Diamond Company, Apr. 16, 3p.

Africa, Angola


&2 D1505-119


2015 Lucapa exceeds diamond mining and processing targets. 1,335 carats. Lulo

Lucapa Diamond Company, Apr. 8, 5p.

Africa, Angola


&3 D1505-120


2015 Lucapa steps up kimberlite diamond program at Lulo. L46 and E46

Lucapa Diamond Company, Mar. 23, 2p.

Africa, Angola


&4 D1505-121

Lucara Diamond Corporation

2015 Lucara recovers 342 carat diamond at its Karowe mine.

Lucara Diamond Corporation, Apr. 20, 2p.

Africa, Botswana


&5 D1505-122

Margaret Lake Diamonds Inc.

2015 High priority drill targets defined on Margaret Lake property.

Margaret Lake Diamonds Inc., Apr. 20, 1p.



&6 D1505-123

Margaret Lake Diamonds Inc.

2015 Closes non-brokered private placement $ 100,620.

Margaret Lake Diamonds Inc., Mar. 27, 1p.



&7 D1505-124

MDN inc.

2015 MDN acquires 20 blocks of high grade niobium claims in Ontario. ( Prairie Lake carbonatite)

MDN Inc., Feb. 24, 1p. Canada, Ontario


&8 D1505-125

Metalex Ventures Ltd.

2015 U2 kimberlite bulk sample permitting complete.

Metalex Ventures Ltd., Apr. 21, 2p.

Canada, Ontario, Attawapiskat


&9 D1505-126

Meteoric Resources

2015 Webb exploration update 51 kimberlite bodies… Type 1 ( no microdiamonds determined as yet)

Meteoric Resources , Mar. 26, 4p.

Australia


&10 D1505-127

Minesite

2015 Conroy discussing kimberlite body in Finland at Seitapera in the Kuhmo district.

Minesite.com, Apr. 1, 1p. Europe, Finland

News item - Karelian Diamonds

&11 D1505-128

Miningmx

2015 Timeless De Beers buys priceless time for Anglo.

Miningmx.com, Apr. 2, 2p.

Global


&12




D1505-129

Miningmx

2015 Rio's Murowa cut output 61% to avoid tax.


Africa, Zimbabwe


&1 D1505-130

Miningmx

2015 Mugabe says indigenisation is 'generous'.


Africa, Zimbabwe

News item - legal

&2 D1505-131

Mountain Province Diamonds Inc.

2015 Mountain Province Diamonds closes term loan facility to fund Gahcho Kue to commercial production.

Mountain Province Diamonds Inc., Apr. 7, 2p.



&3 D1505-132


2015 Mountain Province Diamonds announces completion of primary syndication of US $ 370 million term loan facility.

Mountain Province Diamonds Inc., Mar. 25, 1p.



&4 D1505-133


2015 Mountain Province Diamonds C$95 million rights offering completed and oversubscribed.

Mountain Province Diamonds Inc., Mar. 31, 1p.



&5 D1505-134

Mwana Africa plc.

2015 Update section: diamonds - Klipspringer .

Mwana Africa plc., Apr. 16, 1/2p.



&6 D1505-135

Newfield Resources Limited

2015 DMS plant successfully commissioned. Allotropes diamond project, SL.

Newfield Resources Limited, Mar. 31, 1p.



&7 D1505-136

North Arrow Minerals Inc.

2015 North Arrow reports yellow diamonds from Q1-4 kimberlite are rare type 1b diamonds. Qilalugaq project

North Arrow Minerals Inc., Apr. 21, 2p.

Canada, Nunavut


&8 D1505-137

North Arrow Minerals Inc.

2015 North Arrow discovers three new kimberlites at the Pikoo diamond project, Saskatchewan.. PK314 drilled to depth of 213m and PK 150 drilled to 199 m.

North Arrow Minerals Inc., Mar. 30, 3p.



&9 D1505-138

Olivut Resources Ltd.

2015 Funding and exploration update on HOAM project.

Olivut Resources Ltd., Mar. 30. 1p.



&10 D1505-139

Pangolin Diamonds

2015 Pangolin receives additional prospecting

Pangolin Diamond Corporation, Apr. 7, 1p.

Africa, Botswana





Corporation

licences at the Malatswae diamond project, Botswana.

&1 D1505-140

Pangolin Diamonds Corporation

2015 Pangolin closes $ 404,375 financing for diamond projects in Botswana.

Pangolin Diamond Corporation, Mar. 27, 1p.

Africa, Botswana


&2 D1505-141

Peregrine Diamonds Ltd.

2015 Peregrine provides update on 2015 diamond resource development program.

Peregrine Diamonds Ltd., Apr. 23, 2p.

Canada, Nunavut


&3 D1505-142


2015 Peregrine receives $ 11.85 million from warrant exercise.

Peregrine Diamonds Ltd., Apr. 7, 1p.

Canada, Nunavut


&4 D1505-143


2015 Peregrine to acquire Diamexstrat Botswana. 8 highly prospective licences.

Peregrine Diamonds Ltd., Mar. 30, 3p.

Africa, Botswana


&5 D1505-144

Kilalea, D.

2015 ABN AMRO exits Indian loan book to a local bank.

RBC Capital Markets, Apr. 10, 1/4p.

India


&6 D1505-145

Kilalea, D.

2015 Large stones pick up again with a 342 ct high colour gem recovered at Karowe.

RBC Capital Markets, Apr. 21, 1p.

Africa, Botswana

News item - Lucara

&7 D1505-146

Kilalea, D.

2015 Lucara Diamonds - large stones pick up again with 342 ct high colour gem recovered at Karowe.

RBC Capital Markets, Apr. 24, 1/2p.

Africa, Botswana

News item - Lucara

&8 D1505-147

Kilalea, D.

2015 Petra Diamonds Ltd. Balance sheet strengthened and value adding new Cullinan plant.



News item - Petra

&9 D1505-148

Kilalea, D.

2015 Dominion Diamond Corp. Q4 EPS misses on FX, otherwise robust.



News item - Dominion

&10 D1505-149

Kilalea, D.

2015 De Beers finds conditions tough in March.

RBC Capital Markets, Mar. 31, 2p.

Global


&11 D1505-150

Kwantes, J.

2015 Comments on Peregrine Diamonds. Positive

Resource Opportunities, Apr. 21, 1/4p.

Canada. Nunavut, Baffin Island

News item - Peregrine




&1 D1505-151

Rockwell Diamonds Inc.

2015 Rockwell announces its quarterly production and sales update for the three months ending Feb. 28, 2015. MOR, Saxebdrift, Niewejaarskraal, Tirisano, Kwartelspan

Rockwell Diamonds Inc., Apr. 20, 7p.



&2 D1505-152

Rockwell Diamonds Inc.

2015 Rockwell sells non-core Tirisano project for a cash consideration of $ 6.3 million and provides an update on its Middle Orange River exploration activities. The Consortium ( operating team)

Rockwell Diamonds Inc., Mar. 30, 2p.



&3 D1505-153

Shore Gold Inc.

2015 Announces year end results. Environmental assessment process and NI 43-101 and private placement $ 5.5 m.

Shore Gold Inc., Mar. 26, 8p.



&4 D1505-154

Stellar Diamonds plc.

2015 Application for mining licence at Tongo kimberlite project, Sierra Leone.

Stellar Diamonds plc., Apr. 1, 5p.



&5 D1505-155


2015 First 5000 carats achieved from trial mining at Baoule kimberlite, Guinea.

Stellar Diamonds plc., Apr. 20, 4p.

Africa, Guinea


&6 D1505-156


2015 Interim results on Baoule, Tongo, finances.

Stellar Diamonds plc., Mar. 27, 13p.



&7 D1505-157


2015 Interim results for the six months to 31 December 2014. Baoule, Tongo

Stellar Diamonds plc., Mar. 27, 3p.



&8 D1505-158

Stockwatch News

2015 Archon, Blussom deny owing Fipke's legal bill.

Stockwatch News, Apr. 1, 1p.



&9 D1505-159

Stockwatch News

2015 Newstar Securities ( Robert Friedland) exercised options

Stockwatch News, Apr. 8, 1/2p.

Canada, Nunavut

News item - Peregrine





&1 D1505-160

Stornoway Diamond Corporation

2015 Stornoway pours first concrete for the Renard diamond plant.

Stornoway Diamond Corporation, Apr. 7, 1p.

Canada, Quebec


&2 D1505-161

Stornoway Diamond Corporation

2015 Stornoway announces funding of first tranche of stream financing. $ 80 million

Stornoway Diamond Corporation, Mar. 31, 2p.

Canada, Quebec


&3 D1505-162

Strike Diamond Corp.

2015 Strike Diamond Corp. announces discovery of kimberlite indicator minerals at Sask. Craton properties ( Pikoo district).

Strike Diamonds Corp., Mar. 30, 3p.



&4 D1505-163

Tsodilo Resources Ltd.

2015 Purchases mobile DMS treatment plant.

Tsodillo Resources Ltd., Apr. 8, 2p.

Africa, Botswana


&5 D1505-164

DIB Online

2015 Modular tailings plant planned for Debswana's Letlhakane mine site.

www.diamondintelligence.com, 1/2p.

Africa, Botswana


&6 D1505-165

The Israeli Diamond Industry

2015 A summary of 2014 and forecast for 2015.

www.israeli.com.il, Apr. 13, 1p.

Global

News item - prices

&7 D1505-166

The Isareli Diamond Industry

2015 Coronet gets Guiness world record for $ 2 million diamond guitar.

www.israeli.com.il, Mar. 24, 1/4p.

Technology

News item - guitar

&8 D1505-167

The Isareli Diamond Industry

2015 Antwerp police commissioner and diamond squad head arrested ( $ 55,000 diamonds and gold in his home)

www.israeli.com.il, Mar. 25, 1/4p.

Europe, Belgium

News item - legal

&9 D1505-168

The Swazi Observer

2015 Dvololwako diamond mine to be revived this year…. ( again?)

www.observer.org.sz, Mar. 25, 1/4p.

Africa, Swaziland

News item - Dvokolwayo

&10 D1505-169

Rough-diamond

2015 Dominion Diamond sales up 22%.

www.rough-polished.com, Apr. 10, 1/4p.


News item - Dominion

&11 D1505-170

Rough-diamond

2015 Lucapa says Lulo alluvial mining on track to becoming cash flow


Africa, Angola

News item - Lucapa




positive.

&1 D1505-171

Rough-diamond

2015 Fusion alternatives and Tzoffey's to hold special tenders during international rough diamond week.


Global

News item - Fusion

&2 D1505-172

Rough-diamond

2015 Sarine announces FY2014 group performance.


Technology

News item - Sarine

&3 D1505-173

Rough-diamond

2015 Igor Kevchenkov: money invested in polished diamonds and gold are the most reliable investments.

www.rough-polished.com, Apr. 13, 1p.

Russia

News item - economics

&4 D1505-174

Rough-diamond

2015 Mwana Africa $ 100 mln needed to boost diamond output at DRC mine. Miba JV


Africa, Democratic Republic of Congo

News item - Mwana

&5 D1505-175

Rough-diamond

2015 Tsodilo acquires mobile DMS treatment plant for use at BK16 kimberlite project.


Africa, Botswana

News item - Tsodilo

&6 D1505-176

Rough-diamond

2015 India's outlook raised by Moody's: Fitch sees faster growth.


India

News item - economics

&7 D1505-177

Rough-diamond

2015 Botswana Diamonds issues shares in lieu of fees to John Teeling, others.


Africa, Botswana

News item - Botswana Diamonds

&8 D1505-178

Rough-diamond

2015 Rosatom invented world's best diamond seeking system. Ore processing machine for diamond detection.


Technology

News item - Ria.ru

&9 D1505-179

Rough-diamond

2015 Botswana diamond polishers grapple with high operational costs.


Africa, Botswana

News item - polishers

&10 D1505-180

Rough-diamond

2015 Angolan police seize 9000 cts of diamond in Luvo northern Zaire Province.


Africa, Angola

News item - legal

&11 D1505-181

Rough-diamond

2015 SA diamond trader steals diamonds worth $ 1 million.



News item - legal




&1 D1505-182

Rough-diamond

2015 Debswana to cease production at Botswana's first diamond mine, pit drying. 1977 Lethalkane


Africa, Botswana


&2 D1505-183

Rough-diamond

2015 Alrosa considers 2014 exploration performance.. All targets successfully achieved.


Russia

News item - Alrosa

&3 D1505-184

Rough-diamond

2015 Kristall plans to buy rough diamonds worth RUB 330 million in May.


Russia

News item - Kristall

&4 D1505-185

Rough-diamond

2015 New record for lab grown diamonds set in Russia. Type Iia using HPHT


Russia

News item - New Diamond Technology

&5 D1505-186

Rough-diamond

2015 Moody's upgrades Alrosa's CFR to Ba2 stable outlook.


Russia

News item - Alrosa

&6 D1505-187

Rough-diamond

2015 Alrosa seeks to operate in Dubai due to its proximity to India.


Russia

News item - Alrosa

&7 D1505-188

Rough-diamond

2015 Rio Tinto - Argyle's production Q1 2015 up 31%.


Australia


&8 D1505-189

Rough-diamond

2015 Stellar produces 5000 carats from Baoule kimberlite trial mining grade of 13.5 cpht.


Africa, Guinea

News item - Stellar

&9 D1505-190

Rough-diamond

2015 Andrev Zharkov appointed as President of Alrosa.


Russia

News item - Alrosa

&10 D1505-191

Rough-diamond

2015 De Beers Q1 output up 2%, revises full year guidance downwards.


Global


&11 D1505-192

Rough-diamond

2015 Alrosa increased its diamond reserves by 25.6 million carats in 2014, driving its output to 32.2 million carats.


Russia

News item - Alrosa

&12 D1505-193

Rough-diamond

2015 Modern Russian designers to showcase

www.rough-polished.com, Apr. 3,

Russia

News item - jewellery




jewellery at Moscow Estet fashion week.

1/4p.

&1 D1505-194

Rough-diamond

2015 De Beers Group turning more sophistocated technology to identify synthetics.


Technology

News item - IIDGR

&2 D1505-195

Rough-diamond

2015 Medvedev signed government directive recommending Andrei Zharkov as candidate for Alrosa presidency.


Russia

News item - Alrosa

&3 D1505-196

Rough-diamond

2015 Russian government approved of Alrosa winning alluvial deposit auction. Molodo river area


Russia, Yakutia

News item - Alrosa

&4 D1505-197

Rough-diamond

2015 AWDC renews support of DDI to sustain innovation and core functions.


Global

News item - DDI

&5 D1505-198

Rough-diamond

2015 Zim set to commence diamond beneficiation. ZDTC


Africa, Zimbabwe

News item - ZDTC

&6 D1505-199

Rough-diamond

2015 Alrosa will not change the dividend policy - Ryaschin.


Russia

News item - Alrosa

&7 D1505-200

Rough-diamond

2015 Karelian Diamonds abandoning exploration in northern Finland. Kuhmo ( anti mining)


Europe, Finland

News item - Karelian Diamonds

&8 D1505-201

Rough-diamond

2015 Alrosa executive committee discussed Udachny MPD development… Verkhne Munskoye and Zarnitsa

www.rough-polished.com, Mar. 26, 1/4p.

Russia

News item - Alrosa

&9 D1505-202

Rough-diamond

2015 Zim diamond miners 'afraid to say no' to proposed merger.


Africa, Zimbabwe

News item - legal

&10 D1505-203

Rough-diamond

2015 De Beers expects exponential sales growth in China for diamond industry.


China


&11 D1505-204

Rough-diamond

2015 Zimbabwe diamond exports continue to decline.


Africa, Zimbabwe

News item - MMCZ




&1 D1505-205

Rough-diamond

2015 Illegal diamond trade continues to flourish in CAR despite KP ban.


Africa, Central African Republic

News item - legal

&2 D1505-206

Rough-diamond

2015 Stellar Diamonds advances key projects toward production.



News item - Stellar

&3 D1505-207

Rough-diamond

2015 Alrosa, Kristall Production Corporation sign new long term contract.


Russia

News item - Alrosa

&4 D1505-208

Rough-diamond

2015 White Rivers Exploration seeks JV partner to develop SA alluvial asset.

www.rough-polished.com, Mar. 31, 1p.


News item - White Rivers

5

Documents

Diamonds, Kimberlites, and Related Geology May 2015Did Diamond bearing orangeites originiate from MARID veined peridoites in the lithospheric mantle….. IN Nature Communications Haggerty