Calcite & Brewsterite (Sr)

Strontian mine, Strontian, Western Lochaber, Highland Region, Scotland

Reference: 758

Bed of calcite platelets the centres of which overgrow an earlier scalenohedral habit. Small creamy coloured sparkling brewsterite crystals are scattered over the calcite many seeding onto the centres of the calcite crystals. Stong UV response as can be seen in the second picture.

Formulas: Calcite CaCO₃ ; Brewsterite (Sr,Ba) ₂Al₄Si₁₂O₃₂^.10H₂O