Quartz
Brañes quarry, Oviedo, Asturias, Spain
Group of doubly terminated crystals of Quartz with slight curvatures on the prism edges and on matrix. Their characteristic brown color seems due to indeterminate inclusions. The matrix is also brown Calcite and has been partially dissolved by acid to expose the crystals.
Brañes, Oviedo, Asturias, Spain.
Found in 2009
Specimen size: 4.5 ...
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