Mineral: Quartz with Goethite
Locality: San Valentín open pit, Sancti Espíritu, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia), Spain
Dimensions: 18.4 × 10.4 × 4.6 cm

Description: Quartz crystal druse with mainly pyramid faces and just minimal prism faces, coated with iridescent Goethite in green, blue and violet hues.

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