Rock 365 : Day 75 : Kyanite #365photos
Day 75 : Kyanite, named from the Greek for deep blue, this is the high pressure, low temperature polymorph of aluminium silicate. Keele Collection.
Day 75 : Kyanite, named from the Greek for deep blue, this is the high pressure, low temperature polymorph of aluminium silicate. Keele Collection.
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