Sgurr nam Boc, Minginish, Isle of Skye, Scotland
Small but well formed glassy crystals of apophyllite richly formed over a bed of stilbite crystals. Unusual to find apophyllite at Sgurr nam Boc.
Formulas - Apophyllite: KCa4Si8O20(OH,F) . 8(H2O) ; Stilbite: (Ca0.5,K,Na)9(Al9Si27)O72 . 28H2O
Size: Small Cabinet (S)
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