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Almandine with Ferrocolumbite w/ exsolved Ilmenite & Ferberite

#32490

Almandine with Ferrocolumbite w/ exsolved Ilmenite & Ferberite

#32490
Availability
Sold
Size
2 x 3.5 x 2 cm - Miniature 
Formula
Fe2+3Al2(SiO4)3 (RRUFF)
Locality
Garnet Hill, White Pine Co., Nevada, United States

A dark red-purple Almandine Garnet to 1cm set in pink Rhyollite matrix with a singular <1mm tabular crystal of Ferrobcolumbite, that has been analysed and found to contain exsolution of both Ilmenite and Ferberite, tucked in a Quartz lined vug.

Almandine

Formula
Fe2+3Al2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Equant crystals, rounded grains, typically well-formed dodecahedra or trapezohedra 
Cleavage
None 
Luster
Vitreous - Resinous 
Color
brown, brownish red, red, black, black red 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
7-8 

Data courtesy of Webmineral.

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