Smoky Quartz with Microcline and Albite

Papachacra Formation, El Portezuelo granite, Belén Department, Catamarca Province  Argentina (1993)

Specimen size: 9.8 × 7.2 × 3.4 cm = 3.86” × 2.83” × 1.34”
Main crystal size: 5.8 × 2.7 cm = 2.28” × 1.06”