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RM2691 Rashleighite, var. of turquoise

Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, United Kingdom

An interesting specimen of turquoise (variety rashleighite) from the Cornwall mines. Formerly, rashleighite was an approved species, now it is defined as a turquoise with a certain iron content, intermediate between chalcosiderite and turquoise. This sample shows a sky blue crust aggregates, with cavities with crystals and a quartz matrix. A Cornish classic from the collection of Joan Astor (Barcelona) and, previously, from Martín Oliete (Madrid), a well-known systematic collector.

Size: 4.7 x 4.1 x 3.2 cm.
Found in ± 1984.

Col. Joan Astor (Barcelona). Col. Martín Oliete (Madrid).
Classic locality

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