Mineral identification checklist

MINERAL IDENTIFICATION CHECKLIST Minerals with Metallic Lustre: high specific gravity paper Pyrite Brassy beige – Pyrrhotite Brassy beige – yellow Hematite Steel gray – black; rusty brow

MINERAL IDENTIFICATION CHECKLIST Minerals with Metallic Lustre:

high specific gravity

paper

Pyrite Brassy beige –

Pyrrhotite Brassy beige –

yellow

Hematite Steel gray – black;

rusty brown Reddish brown No Lacks cleavage

Minerals with Non-Metallic Lustre:

a) Harder than glass

12-sided crystals

Feldspar Pink, gray or white 6-6.5 2 well-developed

cleavages at right angles

with triangular faces

b) Softer than glass

Biotite Brown to black 2.5-3 One perfect, basal Thin, elastic sheets

Muscovite Colourless to beige 2.5-3 One perfect, basal Thin, elastic sheets

colourless

directions at 75

Effervesces in HCl acid

Fluorite Colourless, green,