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Sanromanite: Na2CaPb3(CO3)5 Juangodoyite: Na2Cu(CO3)2 Chalconatronite: Na2Cu(CO3)2·3(H2O)
Comments: Yellowish, long balded sanromanite crystals in vug with platy, blue juangodoyite replacing green chalconatronite.
Location: Santa Rosa mine, Iquique Province, Tarapaca, Chile.
Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix