Neptunite

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Neptunite

Dallas Gem Mine, San Benito River, New Idria District, San Benito Co., California, USA

Reference: 2109

Pretty specimen which displays well consisting of single and aggregated gemmy neptunite crystals up to 18mm long set off against white massive natrolite. Towards the centre of the specimen there is a smalll cluster of tan coloured Joaquinite-(Ce) crystals. Ex. Clinton Burhouse collection

Formula: KNa₂Li(Fe²⁺,Mn²⁺)₂Ti₂Si₈O₂₄