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Cobaltite

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QRI846397

Cobaltite

Former collection Christian Mavris
With Antique Label

Description Tabs

Description
Locality: 
Schneeberg, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.5 × 2.7 cm
Weight: 
70.00gr
Description

Metallic crystalline masses of grey cobaltite are deeply intermixed with crystalline white-yellow calcite into wht appears to be a primary ore specimen. Unetched, this could host some crystals too.

The specimen is very old and comes with an Academy of Natural Sciences of Philadelphia label (both pasted catalogue number and paper) plus another label from an unknown (to me) collection. Oldtimer material I did acquire a few years ago.

Mineral Data
What's on the rock

Cobaltite

Formula: 
CoAsS
Strunz: 
2.EB.25
Crystal System: 
Orthorhombic - Pyramidal
Hardness: 
5.5

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