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0 item @ $0.00  

Alpersite

#49834

Alpersite

#49834
Availability
Sold
Size
8 x 6 x 3 cm - Sm Cabinet 
Formula
(Mg,Cu2+)SO4·7H2O (RRUFF)
Locality
Big Mike mine, Pershing Co., Nevada, United States
Tagged
copper

Alpersite was approved in 2003, but I haven't seen too many specimens of this mineral. It is a Mg-Cu sulfate and is post-mine. There are tiny crystals formless to tabular crystals less than 1mm and sugary aggregates. On this specimen there is also white, fibrous Pickeringite. This is the type and only locality. The lot that I have was verified by XRD.

Alpersite

Formula
(Mg,Cu2+)SO4·7H2
Crystal System
Monoclinic 
Crystal Habit
Efflorescences 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
blue 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
2.5 

Data courtesy of Webmineral.

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