Sea Palling.
Pegmatitic phase of larvikite in which large crystals of black augite and grey magnetite can clearly be seen, surrounded by the normal groundmass of blue schillerised plagioclase and microcline.
The coin is a British 20p piece, 18mm across.
Pegmatitic phase of larvikite in which large crystals of black augite and grey magnetite can clearly be seen, surrounded by the normal groundmass of blue schillerised plagioclase and microcline.
The coin is a British 20p piece, 18mm across.
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