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Köttigite var. Cobaltoan - St. Daniel Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany (Type Locality)
(#:MINS7430)
Reddish-pink sub-mm xls of Köttigite var. Cobaltoan from the Type locality.
Formula :
Zn
3
[AsO
4
]
2
* 8 H
2
O
System:
monoclinic
Hardness:
2½-3
Rarity:
rare
Strunz id:VII/C.13-90 - PHOSPHATES, ARSENATES and VANADATES
Name origin:
Named by James Dwight Dana in 1850 in honor of Otto Friedrich Köttig (1824 - 1892), German chemist of Schneeberg, Saxony and who made the first chemical analysis.
Specimen weight:36 gr.
Crystal size:sub-mm
Overall size: 50mm x 26 mm x 26 mm
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