Rock 365 : Day 272 : Porphyritic Rhyolite
Day 272 : Porphyritic rhyolite from the Ordovician Tramore Volcanic Group, Lady Cove, County Waterford, Ireland. Keele collection
Day 272 : Porphyritic rhyolite from the Ordovician Tramore Volcanic Group, Lady Cove, County Waterford, Ireland. Keele collection
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