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basalt?; showing globular ?spherulitic or magma mixing texture

Laggan Bay, Loch Buie, Isle of Mull, Argyll and Bute, Scotland *loose*, beach boulder, probably ex. Palaeocene Loch Uisg Gabbro, Unusual texture. Spherultic textures sometimes seen in margins of cone sheets cutting Loch Uisg gabbro nearby. May be a fragment of this?