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Orthoclase with Pyrite

#PD33735

Orthoclase with Pyrite

#PD33735
Availability
Sold
Size
3.5 x 7 x 1 cm - Sm Cabinet 
Formula
K(AlSi3)O8 (RRUFF)
Locality
Potosi, Bolivia
Tagged
twinned crystal

Cream colored twinned Orthoclase crystal that is a textbook example of a Carlsbad twin with interpenetrating sections seperated by a single plane. There are also a couple Pyrite cubes to 3-4mm partially embedded in the Orthoclase, adding to the oddness of the piece.

Orthoclase

Formula
K(AlSi3)O8 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Massive - Granular, Blocky 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless, greenish, grayish yellow, white, pink 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Phillips Collection

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