'._('einklappen').'
 

Naumannite - Kalgoorlie-Boulder City

Collectors Summary

Chemical Formula Ag2Se
Color grauschwarz, eisenschwarz
Streak color schwarz
Lustre heller Metallglanz; stark nachdunkelnd
Hardness (Mohs) 2.5
Fracture haklig
Solubility +++ heiße HNO3, + NH4OH
Crystal System orthorhombisch, P212121