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0 item @ $0.00  

Ankerite on Quartz

#50402

Ankerite on Quartz

#50402
Availability
Sold
Size
10 x 6 x 3 cm - Cabinet 
Formula
CaFe2+(CO3)2 (RRUFF)
Locality
Smallcleugh Mine, Nenthead, Alston Moor dist., Cumbria, England
Tagged
carbonate

A handsome basic mineral specimen from a well-known Cumbrian locality well-known to collectors of the area. This specimen sits perfectly well on its own as seen in the first photo. The other photos show the saddle-shaped crystals with a pearly luster and curvy shapes of the Ankerite crystals generally to 4mm. 

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.

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