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0 item @ $0.00  

Alluaudite with Strengite

#45181

Alluaudite with Strengite

#45181
Availability
Sold
Size
9 x 6 x 6 cm - Sm Cabinet 
Formula
(Na,Ca)2(Mn,Mg,Fe2+)(Fe3+,Mn2+)2(PO4)3 (RRUFF)
Locality
Buranga pegmatite, Gatumba dist., Western Prov., Rawanda
Tagged
phosphate , pegmatite mineral

A good-sized chunk of blackish Alluaudite partially altered to Strengite.

Alluaudite

Formula
(Na,Ca)2(Mn,Mg,Fe2+)(Fe3+,Mn2+)2(PO4)3 
Crystal System
Monoclinic 
Crystal Habit
Platy, Fibrous, Nodular 
Cleavage
Good, Good, None 
Color
brownish yellow, green, yellow, black 
Streak
brownish yellow 
Class
Monoclinic - Prismatic 
Hardness
5-5.5 

Data courtesy of Webmineral.

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