B

Plate 1: Head Sample

A Low magnification view of the sample showing the high liberation and major phases

B Rare grain of chalcopyrite locked with bornite

C Coarse gold in fractured tetrahedrite. The grain contains two types of tetrahedrite

D Coarse gold in a composite grain of sphalerite and galena. Sphalerite contains fine inclusions of chalcopyrite.

A, B, C & D - Plane polarised reflected light

A

DC100 µm

100 µm100 µm

sphalerite

pyrite

chalcopyrite

sphalerite

chalcopyrite

galena

tetrahedrite 1

galena

gold

gold

tetrahedrite 2

bornite

tetrahedrite

chalcopyrite

pyrite

galena

500 µm

arsenopyrite

Mineralogical Report Example Report

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