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0 item @ $0.00  

Corundum variety sapphire

#PD32435

Corundum variety sapphire

#PD32435
Availability
Sold
Size
4.5 x 3 x 3 cm - Miniature 
Formula
Al2O3 (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States

Not exactly sure on the locality of this specimen. The old Shale's label claims it to be "Butte". This is probably somewhere in the outlying country of the north or south plates and not the intrusives of the Butte district. Any guesses out there? There are 3cm lavendar crystals in the matrix.

Corundum

Formula
Al2O3 
Crystal System
Trigonal 
Crystal Habit
Euhedral Crystals, Tabular, Prismatic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
blue, red, yellow, brown, gray 
Streak
none 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Tough 
Hardness

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
View Corundum
On Dakota Matrix
Previously Sold Corundum
On Dakota Matrix
Other Available Corundum
WebMineral
View Corundum
Mindat
View Corundum

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