Heterogenite & Chrysocolla

Heterogenite – Co³⁺O(OH)

Elements: Cobalt, Oxygen, Hydrogen

Class: Oxides

Crystal System: Hexagonal

Hardness: 3-5

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Chrysocolla – (Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O

Elements: Copper, Aluminum, Hydrogen, Silicon, Oxygen

Class: Silicates

Hardness: 2.5-3.5

Calcite

Talc (1)Diamond (10)

A copper coin can scratch it.

Origin: ’Etoile du Congo Mine Lubumbashi, Haut-Katanga – Congo (drc)

More minerals containing Cobalt