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.

Purpurite from Larimer County, Colorado

A nice crystal of Beryl var. Aquamarine with a hollow tip from the Medina Mine in Brazil. 

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

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

Rhodochrosite, Chalcopyrite, Quartz 

Champion Mine, Cinnamon Pass, Hinsdale County, Colorado 

Rocky Mountain Gems an Minerals

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.

Tsumeb

5.6 x 4.7 x 3.9 cm

Tsumeb Mine – Otjikoto Region Namibia

Spectacular crystals 9.5 x 6.2 x 1.5 cm

A rare pseudomorph of Smithsonite after Dolomite from Arkansas. 

Fluorite, Lead Hill, Cave-in-Rock District, Hardin County, Illinois

Specular Hematite crystals on Quartz