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0 item @ $0.00  

Actinolite in Calcite

#55859

Actinolite in Calcite

#55859
Availability
Sold
Size
6 x 5 x 4 cm - Sm Cabinet 
Formula
Ca2(Mg,Fe2+)5Si8O22(OH)2 (RRUFF)
Locality
Broken Hill, New South Wales, Australia

I thought this might be interesting to post. Simply it is Calcite with thin, long crystals of Actinolite as inclusions.

Actinolite

Formula
Ca2(Mg,Fe2+)5Si8O22(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Bladed, Radial, Fibrous 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous (Glassy) 
Color
green, green black, gray green, black 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
5.5 

Data courtesy of Webmineral.

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