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You Are Here :
Home
/
Explore
/
Natural heritage
/
Adrian Smith Mineral Collection
/
Minerals, gems and meteorites
/
81-112 Oxides
/
Largest
86. Corundum. Largest
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Dana number
4.3.1.2
Chemical formula
Al
2
O
3
Crystal class
Hexagonal
Mohs hardness
9
Specific gravity
3.95-4.10
Collected in
Unknown, India
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