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0 item @ $0.00  

Crichtonite on Quartz

#PD33752
SOLD
Crichtonite from Presidente Kubitschek, Minas Gerais, Brazil - PD33752
Crichtonite from Presidente Kubitschek, Minas Gerais, Brazil - PD33752

Crichtonite on Quartz

#PD33752
Availability
Sold
Size
2 x 2 x 1.5 cm - Thumbnail 
Formula
Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 (RRUFF)
Locality
Presidente Kubitschek, Minas Gerais, Brazil

Black formless crystal grain to 1.5mm, on Quartz crystal. Lurking about is also golden Rutile crystals. Crichtonite is a fairly rare titanium mineral with several other (possible) elements as shown above in the formula. 

Crichtonite

Formula
Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 
Crystal System
Trigonal 
Crystal Habit
Rhombohedral Crystals 
Luster
Metallic - Dull 
Color
black 
Streak
dark gray 
Class
Trigonal - Rhombohedral 
Hardness
5-6 

Data courtesy of Webmineral.

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