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image: Freshly broken surface of the drusy G2 Granite at the Diamond Rocks; the gas cavities are lined with well-formed crystals of dark/smoky quartz and light-coloured alkali feldspar.
Freshly broken surface of the drusy G2 Granite at the Diamond Rocks; the gas cavities are lined with well-formed crystals of dark/smoky quartz and light-coloured alkali feldspar.
 
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