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0 item @ $0.00  

Coloradoite

#BM46118

Coloradoite

#BM46118
Availability
Sold
Size
5 x 2.5 x 2.5 cm - Miniature 
Formula
HgTe (RRUFF)
Locality
Perseverance Gold mine, Kalgoorlie-Boulder, Western Australia, Australia
Tagged
tellurium , mercury

This specimen was originally labeled as Krennerite with Calaverite. I tested this with EDS, and it came back as Coloradoite with only Hg and Te present. With these two elements present and nothing else, it could only be Coloradoite for at least the part I tested. The arrow points to the crystal I tested, which is 3mm. It flakes off platy with good cleavage with also a conchoidal fracture. When fresh, it is silvery in portions but black in other areas. It seems to tarnish a brassy gold color, but is also iridescent in places. It is also soft perhaps about a 2. This is however the majority of the metallic mineral present. Krennerite and Calaverite may also be present as there are other minerals. 

EDS Confirmed

Coloradoite

Formula
HgTe 
Crystal System
Isometric 
Crystal Habit
Massive, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
grayish black, black 
Streak
black 
Class
Isometric - Hextetrahedral 
Fracture
Conchoidal 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
McConlogue Collection
Special Info
EDS Confirmed

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