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.

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 

Smoky Quartz cluster from Diamantina, Minas Gerais, Brazil

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

A huge crystal of Hematite Included Quartz from Canada.

Rhodochrosite with Quartz, Pyrite, Sphalerite combination, Peru

Translucent, Reddish-Pink Rhodochrosite crystals scattered over dozens of terminated Quartz crystals. Rhodochrosite with minor Pyrite and Sphalerite on the bottom. The Rhodochrosite habit is bladed. Vitreous luster.

Location: Pasto Bueno District, Pallasca Province, Ancash Department, Peru

Size: 2.2 x 1.5 x 0.8 inches

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

Tsumeb Mine – Otjikoto Region Namibia

Spectacular crystals 9.5 x 6.2 x 1.5 cm

Pyrite Sun, Ziegler Coal Mine, Sparta, Illinois

A rare iron phosphate mineral, Strengite, from Arkansas. 

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.

A nice combination specimen from Pakistan of Apatite, Muscovite, & Albite.