NG46F7: Calcite is not so common in this Quarry. In this case we have a quite large, rounded crystal of Calcite on the typical matrix of Fluorite and Quartz, although in this case the Fluorite is colorless. Curiously the Calcite is intensely yellow-orange near the rear, almost certainly due to the presence of oxides that were in the iron rich fluids from which it formed.
La Viesca Mine, Coquera de la Calcita pocket, La Collada mining area, Huergo, Siero, Comarca Oviedo, Principality of Asturias (Asturias)  Spain (01/2004)

Specimen size: 12.5 × 10.5 × 8.5 cm = 4.92” × 4.13” × 3.35”

Main crystal size: 6.6 × 5.2 cm = 2.60” × 2.05”