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Magnesiohulsite

#PD37347

Magnesiohulsite

#PD37347
Availability
Sold
Size
Chip < 1cm 
Formula
Mg2(Fe3+,Sn,Mg)O2(BO3) (RRUFF)
Locality
Iten'yurginskoye deposit, Tschukotka, Russia

A rare tin borate with radial needles in matrix. It was originally found in a magnesian borate skarn deposit.

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
Phillips Collection

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