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Definition of elvan
Cornish term for a dyke or vein of porphyry.
Ref: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Ref: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
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Locality Updated: San Miguel Mine, Moctezuma, Mun. de Moctezuma, Sonora, MexicoFrom David Von Bargen, 24th May 2013 23:52:46















