Petroleum-included Quartz

Chalcopyrite and Siderite combo

Stunning color contrast of green Siderite “Blades” with golden Chalcopyrite crystals in this specimen. Several of the Siderite blades are at least 2-cm long. The luster of the Siderite is vitreous while the Chalcopyrite has a brilliant metallic luster.

Yellow Prehnite crystal cluster from the Merelani Hills, Manyara Region, Tanzania.

Stunning color contrast of green Siderite “Blades” with brassy, iridescent Chalcopyrite crystals in this specimen. Several of the Siderite blades are 1-inch long. The luster of the Siderite is vitreous to pearly while the Chalcopyrite has a brilliant metallic luster.

Quartz Pseudo (Possibly Barite)

Keystone Claim / San Juan County, Colorado 

Perfect Specimen 7 x 6 x 2.5 cm / Large crystal 2.9 x 1 x .3 cm

Sponsored by Rocky Mountain Gems and Minerals 

A huge crystal of Hematite Included Quartz from Canada.

Pyrite Sun, Ziegler Coal Mine, Sparta, Illinois

This piece glitters! Stunning color contrast of green Siderite “Blades” with brassy iridescent Chalcopyrite, whitish Calcite, and gray Tetrahedrite crystals in this specimen. The green blades of Siderite in this piece are very rare! Several of the Siderite blades are at least 0.5 inch long. The Calcite crystals are flattened and translucent. The luster of the Siderite is vitreous while the Chalcopyrite and Tetrahedrite have a brilliant metallic luster.

Fluorescent Purple Flourite, Greenlaw’s Mine, England

A neat sample of Shattuckite from Kandesi in the Kaokoveld Plateau of Namibia.

Tsumeb

5.6 x 4.7 x 3.9 cm