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Effenbergerite in Sugilite

#38176

Effenbergerite in Sugilite

#38176
Availability
Sold
Size
2 x 1 x 1.5 cm - Thumbnail 
Formula
BaCuSi4O10 (RRUFF)
Locality
Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa

This very rare barium copper phyllosilicate has been found in only one place on Earth - the Wessels mine. Hard to obtain material. I'll have a large more expensive specimen on a future update. This one contains several grains as seen in Sugilite matrix.

Type & Only Locality

Effenbergerite

Formula
BaCuSi4O10 
Crystal System
Tetragonal 
Crystal Habit
Platy 
Cleavage
Perfect, Poor, None 
Luster
Vitreous - Resinous 
Color
blue 
Streak
pale blue 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
4-5 

Data courtesy of Webmineral.

Special Info
Type & Only Locality

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