ZCA Pierrepont Mine, Pierrepont, St. Lawrence County, New York, USA

Gemmy yellow sphalerite on dark magnetite matrix. Though the sphalerite is fully crystalline, I believe these are cleavage faces. The sphalerite is very transparent, and this quality is very uncommon. Overall size of mineral specimen: 4.5x3.5x3 cm. Size of individual crystals: 1-2 cm.

© 2001 John H. Betts

Colorless scalenohedral calcite crystal 18 mm long with scattered .5 mm pyrite crystals on the surface. Overall size of mineral specimen: 28x17x16 mm. Size of individual crystals: 18 mm.

© 2001 John H. Betts

SUPER GEMMY and LUSTROUS, yellow sphalerite crystals to 1.0 cm aesthetically set atop magnetite matrix from the famous Pierrepont Mine in New York. An edge bruise on the termination of the large crystal is on the back and is out of sight. RARE material from finds in the late 90s. Hard as heck to get today, espeically in combo pieces like this! ...

© Rob Lavinsky & irocks.com

Purchased 2013

Sphalerite with Hematite and Pyrite A single reddish-brown, translucent Sphalerite crystal 30 mm. across, with no matrix. Several of the crystal faces are glassy, and a few are sprinkled with 1 mm. platy Hematite crystals. The crystal is a mixture of flat and curved crystal faces. There are also three Pyrite crystals to 3 mm.

© Terry Burtzlaff

Pyrite Size: 2.4x2.5x1.6cm

5.0 x 4.5 x 3.5 cm. A very rare and exceptional calcite twin from this well-known New York zinc mine. A striking and artistic pair of interpenetrating twins is beautifully perched atop the stalk of smaller calcites. The lustrous, glassy, colorless rhombs have fascinating preferential water-clear and frosted stepped-growth faces. Calcites from any ...

© Rob Lavinsky & irocks.com

Phlogopite, Diopside, Pyrite, Sphalerite UVA

5.0 x 4.6 x 3.6 cm An eye-catching full sized miniature specimen of off-white rhombic scalenohedral crystals of calcite with a minor sprinkling of pyrite. The calcites are sharp and lustrous with good form and decent translucency.

© Brian Kosnar - Mineral Classics

A loose, gemmy, brilliant yellow sphalerite crystal.

Phlogopite, Diopside, Pyrite, Sphalerite UVC

A plate of blocky, coloreless to pale yellow calcite crystals.