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Pseudobrookite with Ilmenite

#33780

Pseudobrookite with Ilmenite

#33780
Availability
Sold
Size
7 x 6.5 x 5 cm - Sm Cabinet 
Formula
(Fe3+2Ti)O5 (RRUFF)
Locality
nr. Robinson Summit, White Pine Co., Nevada, United States

Vuggy Rhyolite/Andesite matrix lined with a druse of colorless Albite and host to several slender black striated prismatic crystals of Pseudobrookite to 2.5mm, black tabular Ilmenite crystals, and minor golden-brown Biotite. Neat to view under a microscope!

Pseudobrookite

Formula
(Fe3+2Ti)O5 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine 
Cleavage
Poor, None, None 
Luster
Adamantine - Metallic 
Color
brownish black, reddish brown, black 
Streak
brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness

Data courtesy of Webmineral.

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