Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Cat Sapphire

A variety of 'Sapphire' [Corundum]
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Formula:
Al2O3
Colour:
black, greenish blue
Oriental sapphires of some value but not of the characteristic colour.


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Unique IdentifiersHide

Mindat ID:
43716 (as Cat Sapphire)
1136 (as Corundum)
Long-form identifier:
mindat:1:1:43716:7 (as Cat Sapphire)
mindat:1:1:1136:1 (as Corundum)

Physical Properties of Cat SapphireHide

Colour:
Black, greenish blue

Chemistry of Cat SapphireHide

Mindat Formula:
Al2O3
Element Weights:
Element% weight
Al52.925 %
O47.075 %

Calculated from ideal end-member formula.
Elements listed:
Al, O - search for minerals with similar chemistry

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Cat SapphireHide

References for Cat SapphireHide

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