Marin Mineral
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Fine Mineral Specimens for Collectors
Mike Keim, P.O. Box 5256 Larkspur, California, 94977   (415) 342 - 1852
Some of our Featured Specimens:
Prehnite on Tanzanite
Prehnite on Tanzanite
Merelani Hills, Arusha, Tanzania
Fluorite with Sphalerite
Fluorite with Sphalerite
Milpo Mine, Atacocha mining district, Pasco Province, Peru
Mimetite
Mimetite
Mt. Bonnie Mine, Northern Territory, Australia
Augelite
Augelite
Mundo Nuevo Mine, La Libertad, Peru
Richterite
Richterite
Kokcha Valley, Badakhshan, Afghanistan
Dioptase on Shattuckite
Dioptase on Shattuckite
Kaokaveld, Namibia
Browse the Updates:
Katlang Topaz
July 29, 2026
Mixed Minerals
July 14, 2026
Mixed Minerals
June 22, 2026
Mixed Minerals
June 3, 2026
Copper Crystals from the Rocklands Mine
May 29, 2026
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