Calcite on Dolomite
Benchmark Quarry, USA
Calcite, Dolomite, Marcasite
Benchmark Quarry, St Johnsville, Montgomery Co., New York, USA
A sweet calcite with marcasite inclusions on matrix from a Herkimer diamond quartz pocket at the Benchmark Quarry, in St. Johnsville, Montgomery Co., New York, USA! This specimen features a group of marcasite-included, yellow calcite crystals that have formed over a bit of dolostone matrix. The dolostone has been overgrown by small, saddle-back dolomite crystals.