Krohnkite & Natrochalcite
Krohnkite & Natrochalcite
Krohnkite & Natrochalcite
Krohnkite & Natrochalcite
Krohnkite & Natrochalcite

Krohnkite & Natrochalcite

Kröhnkite – Na2Cu(SO4)2·2H2O
Elements: Sodium, Copper, Sulfur, Oxygen, Hydrogen
Class: Sulfates
Crystal System: Monoclinic
Hardness: 2.5-3
Calcite
Talc (1)Diamond (10)
A copper coin can scratch it.
Natrochalcite – NaCu2(SO4)2(OH)·H2O
Elements: Sodium, Copper, Sulfur, Oxygen, Hydrogen
Class: Sulfates
Crystal System: Monoclinic
Hardness: 4.5
Apatite
Talc (1)Diamond (10)
Softer than glass. A steel knife scratches it.
Size: 5.7 x 4.6 x 4.3 cm Origin: Chuquicamata Mine, Calama, Antogasta – Chile

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