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Al-free gyrolite from the Lizard, Cornwall, England

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Gyrolite containing no detectable Al (<0.04 wt.%) has been found as aggregates of platey crystals to 6 mm at Dean Quarry, the Lizard, Cornwall. The gyrolite occurs embedded in calcite which fills a fracture vein in gabbro. Paragenetic evidence is inconclusive, but suggests that gyrolite formed relatively early, after prehnite, and possibly around the same time as analcime and natrolite.


Document Type: Research Article


Affiliations: 1: Tregears, Little Treviscoe, St Austell, Cornwall PL26 7QL 2: 48 St Julitta, Luxulyan, Bodmin, Cornwall PL30 5ED

Publication date: 1998-04-01

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