The Wonderful World of Minerals!

Sulfur

• Luster: Non-Metallic/Dull.

• Fracture: Earthy.• Other properties:

Rotten egg smell, yellow.

Quartz

• Cleavage: Hexagonal• Hardness: 7 on

hardness scale• Other Properties:

Common rock making mineral.

Calcite

• 3 on the hardness scale.• Other Properties:

Bubbles in acid (HCL) double image.

Hematite

• Luster: Metallic• Fracture: Uneven• Other Properties:

Common name is bloodstone.

Fluorite

• Cleavage: Octahedral• Hardness: 4 on the

hardness scale.• Other Properties:

Fluorescent.

Limonite

• Luster: Non-Metallic: Dull

• Fracture: Earthy• Other Properties:

Porous.

Olivine

• Luster: Non-Metallic; Sparkly

• Other properties: Sugary Texture

Pyrite

• Luster: Metallic• Cleavage: Cubical• Other properties:

Common name is fools gold.

Feldspar

• Fracture: Blocky• Other Properties: Most

common rock making mineral

Talc

• Luster: Non-metallic; waxy.

• Hardness: 1 on Mohs

Other properties: used for cosmetics and talcum powder (baby powder).

Magnetite

• Luster: Metallic • Other Observed

Properties: Magnetic

Galena

• Luster: Metallic • Cleavage: Cubical• Other properties:

source of lead.

Sphalerite

• Luster: can be Metallic or non-metallic depending on how you see it.

• Other Properties: Smelly Streak.

Halite

• Luster: Non-Metallic• Cleavage: Cubical • Other Properties:

Source of salt/ rock salt.

Gypsum

• Luster: Non-Metallic; Silky

• Cleavage: Fibrous or stringy.

• Hardness: 2 on Hardness scale.

Mica

• Cleavage: Basil Perfect• White: Mica muscovite• Black: Mica Biotite