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Perovskite with Monticellite & Calcite

#BN49588

Perovskite with Monticellite & Calcite

#BN49588
Availability
Sold
Size
9.5 x 7 x 4 cm - Cabinet 
Formula
CaTiO3 (RRUFF)
Locality
Kimzey quarry, Magnet Cove, Hot Spring Co., Arkansas, United States

A great study specimen from a famous Carbonatite deposit mined prior to the 1960's when it was closed. The specimen consists of mostly Calcite in large cleavable masses. At the center is a large crystalline mass of brown Monticellite. Around the Monticellite is a silky looking, light yellow mineral which looks like Sillimanite, although I have not seen it in this environment. All throughout the mass are are shiny black octahedral crystals of Perovskite to 6mm (shown). Excellent specimen originally from the Dr. Al Kidwell collection who acquired it from Joe Kimzey himself in 1966!! See prov. tabe for this information.

Perovskite

Formula
CaTiO3 
Crystal System
Orthorhombic 
Crystal Habit
Reniform, Pseudo Cubic, Pseudo Hexagonal 
Cleavage
Good, Good, Good 
Luster
Sub Metallic 
Color
black, reddish brown, pale yellow, yellowish orange 
Streak
grayish white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection

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