Images
Formula: CoSe2
Selenide, pyrite group, forms
a series with krut'aite
Crystal System: Isometric
Specific gravity: 7.09 measured on synthetic material, 7.12 calculated
Hardness: 7
Colour: Rose-violet
Common impurities: Cu,Pd
Environments
Localities
At Sierra de Cacheuta, Cacheuta District, Luján de Cuyo department, Mendoza Province, Argentina, trogtalite
replaces krut'aite on a microscopic scale
(Mindat photo)
Trogtalite from Sierra de Cacheuta -
Image
At the Musonoi Mine, Kolwezi, Mutshatsha, Lualaba, DR Congo, trogtalite occurs with
oosterboschite
(HOM).
Trogtalite from the Musonoi Mine -
Image
At the type locality, the Trogtal Quarries, Harz, Goslar District, Lower Saxony, Germany, trogtalite occurs
intergrown with clausthalite as irregular grains up to 1 mm
in size. Associated minerals include clausthalite,
hematite, bornhardtite,
selenium and gold
(Mindat).
Trogtalite from Trogtal - Image
At the Greywacke quarry, Rieder, Ballenstedt, Harz, Saxony-Anhalt, Germany, trogtalite occurs as inclusions
in clausthalite
(Mindat photo).
Trogtalite from the Greywacke quarry -
Image
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