Group of Quartz crystals with distinct parallel growths on the prism faces, on a matrix of Orthoclase crystals twinned according to the Baveno law and with a parallel aggregate of lamellar Mica crystals, probably Muscovite. This specimen, of special interest due to the location, size and slightly citrine color of the Quartz, comes from the Raúl Sanabria collection, whose label we will send to the buyer.
Navazales Quarry (El Berrocal, Los Gallegos), La Cabrera pluton, Valdemanco - Bustarviejo, Comarca Sierra de Guadarrama, Community of Madrid Spain (05/2001)
Specimen size: 21 × 10.1 × 13.2 cm = 8.27” × 3.98” × 5.20”
Main crystal size: 8.2 × 4.8 cm = 3.23” × 1.89”
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