Sphalerite on Calcite

Sphalerite – ZnS

Elements: Zinc, Sulfur

Class: Sulfides

Crystal System: Cubic

Hardness: 3.5-4

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Calcite – Ca(CO₃)

Elements: Calcium, Carbon, Oxygen

Class: Carbonates

Crystal System: Hexagonal

Hardness: 3

Calcite

Talc (1)Diamond (10)

A copper coin can scratch it.

Origin: Elmwood Mine, Carthage, Smith Co., Tennessee – Usa

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