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Juangodoyite: Na2Cu(CO3)2
Comments: Rich blue veinlets of juangodoyite in matrix.. Location: Mina Santa Rosa, Iquique, Chile. Scale: 3.5x2.9x2.2 cm. © Richard Dale / Dale Minerals
Juangodoyite: Na2Cu(CO3)2 Sanromanite: Na2CaPb3(CO3)5 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