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0 item @ $0.00  

Ankerite ps after Calcite

#BC52613

Ankerite ps after Calcite

#BC52613
Availability
Available
Price
$175.00
Size
10 x 6 x 2.5 cm - Cabinet 
Formula
CaFe2+(CO3)2 (RRUFF)
Locality
Niederschlema, Schlema dist., Erzgebirge, Saxony, Germany
Tagged
carbonate

An attractive specimen with tiny white rhombic crystals of Ankerite which replaced Calcite. The black specks are Hematite. It comes with two Freiberg museum labels (prov. tab) from 1992 by the Barbara and the late, highly regarded Forrest Cureton, a friend of mine.

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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