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Chiavennite

#BAC62576
SOLD
Chiavennite from Tuften, Tvedalen, Larvik, Vestfold, Norway - BAC62576
Chiavennite from Tuften, Tvedalen, Larvik, Vestfold, Norway - BAC62576

Chiavennite

#BAC62576
Availability
Sold
Size
3 x 1.5 x 1.5 cm - Thumbnail 
Formula
CaMn2+(BeOH)2Si5O13·2H2O (RRUFF)
Locality
Tuften, Tvedalen, Larvik, Vestfold, Norway
Tagged
beryllium

Rusty orange tufts of Chiavennite composed of very this plates. The individual crystals can be seen in the fourth photo. Chiavennite is a rather rare beryllium mineral.

Chiavennite

Formula
CaMn2+(BeOH)2Si5O13·2H2O 
Crystal System
Orthorhombic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, orange, red orange 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Hardness
3 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
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