Sapphire in Mullite
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Loch Scridain, Isle of Mull, Scotland
1852
Loch Scridain on the Isle of Mull occasionaly produces sapphires this specimen being a fine example example. The sapphires, formed in pink Mullite, have good colour and whilst most are incomplete there are occasional whole crystals. Loch Scridain is the type locality for Mullite.
Formulas: Sapphire Al2O3 ; Mullite AL4+2xSi2-2xO10-x (x ~ 0.4)
Status: Sold
Dimensions: 70x50x22mm
Size: Small Cabinet (S)
Minerals of the English Midlands
UK Journal of Mines & Minerals No. 12
UK Journal of Mines and Minerals No. 3
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