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RM1835   Callaghanite

Sierra Magnesite Mine, Gabbs, Nye Co., Nevada, United States of America

Callaghanite is an very rare copper magnesium carbonate, known from only a few localities worldwide. This specimen has bright royal-blue microcrystals and hails from the Type Locality in Nevada. Good size and rich sample.

Size: 5.2 x 4.8 x 3.8 cm

Type Locality - Localidad Tipo
Classic locality

RM1712   Turquoise

Royston Mine, Royston, Nye Co., Nevada, United States of America

Curious specimen of turquoise, authentic turquoise, of a slightly greenish blue color, forming globular and elongated nucleus, in a matrix of goethite with other phosphates as possibly strengite. It is slightly polished which allows us to see perfectly the forms that the phosphate takes inside the matrix.

Size: 6.5 x 4.0 x 3.2 cm.

Col. J.M. Manchion (Barcelona)