Calcite (Twinned)
Posted by: Raymond McDougall on 11.23.2022 | Filed under:

Calcite (Twinned)

Specimen # 201162
Mineral: Calcite
Location: York Building Supply Quarry, York, York Co., Pennsylvania, USA
Size: 7.0 x 6.0 x 5.0 cm


A sharp, lustrous calcite crystal perched perfectly on limestone. The 3.8 cm crystal is contact twin, with subtle re-entrants around the middle. This crystal is champagne-coloured, with orange hues added by iron oxides. In excellent condition, one nick. One place on the crystal has what seems to be a thin limestone-intergrowth veneer, and inside the crystal there is lively internal play of light. From the John S. White Pennsylvania collection, he acquired it from Skip Colflesh.