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2 items @ $85.00  

Magnesiohulsite

#BAC61613

Magnesiohulsite

#BAC61613
Availability
Sold
Size
1 x 0.5 x 0.5 cm - Thumbnail 
Formula
Mg2(Fe3+,Sn,Mg)O2(BO3) (RRUFF)
Locality
Iten'yurginskoye dep., Chukotsky, Russia
Tagged
tin

Magnesiohulsite is a very rare tin borate found a three localites. The crystals are compact, radial fibers.

Magnesiohulsite

Formula
Mg2(Fe3+,Sn,Mg)O2(BO3
Crystal System
Monoclinic 
Crystal Habit
Aggregates, Microscopic Crystals, Acicular 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
black 
Streak
dark brown 
Class
Monoclinic - Prismatic 
Hardness
5.5-6.5 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection

Other Sold

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