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0 item @ $0.00  

Ankerite

#PD48852

Ankerite

#PD48852
Availability
Sold
Size
6.5 x 3.5 x 3 cm - Sm Cabinet 
Formula
CaFe2+(CO3)2 (RRUFF)
Locality
Near Copper Harbor, Keweenaw Co., Michigan, United States
Tagged
carbonate

Good rhombic crystals of Ankerite to 2mm covering face. It is possibly Calcite with a Hematite coating however. 

Ankerite

Formula
CaFe2+(CO3)2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Massive, Granular 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
brown, brownish yellow, gray, gray brown, white 
Streak
white 
Class
Trigonal - Rhombohedral 
Fracture
Sub Conchoidal 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Don Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Ankerite
On Dakota Matrix
Other Available Ankerite
WebMineral
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Mindat
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