Metallic gray radiating berthierite specimen with a sharp bottom reflection.

Berthierite

Berthierite – FeSb2S4
Elements: Iron, Antimony, Sulfur
Class: Sulfides
Crystal System: Orthorhombic
Hardness: 2-3
Calcite
Talc (1)Diamond (10)
Soft. A fingernail can scratch it.
Origin: Herja Mine, Chiuzbaia, Baia Mare, Marmures – Romania

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