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2 items @ $50.00  
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Groutite on Vesuvianite

#BAC64305
SOLD
Groutite from Jeffrey mine, Asbestos, Quebec, Canada - BAC64305
Groutite from Jeffrey mine, Asbestos, Quebec, Canada - BAC64305

Groutite on Vesuvianite

#BAC64305
Availability
Sold
Size
3.3 x 2.2 x 1.7 cm - Miniature 
Formula
Mn3+O(OH) (RRUFF)
Locality
Jeffrey mine, Asbestos, Quebec, Canada

An excellent spray of black Groutite to 2mm on Vesuvianite. Groutite is generally not seen at this locality.

Groutite

Formula
Mn3+O(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Striated, Prismatic 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Metallic 
Color
blue black 
Streak
dark brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Groutite
On Dakota Matrix
Other Available Groutite
WebMineral
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Mindat
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Other Sold

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