Wulfenite Pseudocubic, Mimetite & Calcite

Wulfenite – PbMoO₄

Elements: Lead, Molybdenum, Oxygen

Class: Molybdates

Crystal System: Tetragonal

Hardness: 2.5-3

Calcite

Talc (1)Diamond (10)

A copper coin can scratch it.

Mimetite – Pb₅(AsO₄)₃Cl

Elements: Lead, Arsenic, Oxygen, Chlorine

Class: Arsenates

Crystal System: Monoclinic

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: San Juan Poniente, Mina Ojuela, Mapimi, Durango – Mexico