nola162575
nola162575
01-12-2020
Geography
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How can corundum be described?
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keyonaaaaa
keyonaaaaa
01-12-2020
Hhhhkikmnnjlllsstjnn
Hbhhs.
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baddieanai
baddieanai
01-12-2020
a very hard mineral that consist of aluminum oxid occurring in massive and crystalline forms that can be synthesized, and that is used for gemstones (such as rub and sapphire) and as an abrasive.
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