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Dellaite, Rustumite, Spurrite


Dellaite : Ca6(Si2O7)(SiO4)(OH)2, Rustumite : Ca10(Si2O7)2(SiO4)Cl2(OH)2, Spurrite : Ca5[CO3|(SiO4)2]

Photo Copyright © 2007, JGW, courtesy of Photographic Guide to Mineral Species  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Negra Mine, Maconi, Mun. de Cadereyta, Queretaro, Mexico
Labelled as "dellaite and rustumite in spurrite" from Querétaro, Mexico. The assigned locality detail is assumed, as this is the only location for spurrite in the MinDat database that corresponds to the label. An accompanying discription indicates that the two minerals occur as intermixed white grains in the spurrite.
2.5 cm field of view. S131-27
Specimen courtesy of Excalibur Mineral Company.

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