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0 item @ $0.00  

Calcite on Microcline

#48513

Calcite on Microcline

#48513
Availability
Sold
Size
11 x 6 x 7 cm - Cabinet 
Formula
CaCO3 (RRUFF)
Locality
Shigar Valley , Baltistan, Northern Areas, Pakistan
Tagged
carbonate

Calcite, especially this size, is rare in pegmatites. Most carbonates are associated with the primary phosphates. This specimen is an unusually large Calcite crystal perched nicely on Microcline. The specimen was photographed for figue 4-24 in London's "Pegmatites" book. See prov. tab for London't label.

Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness

Data courtesy of Webmineral.

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