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:
Herderite
Herderite
Green Cloud Mine, Chihuahua Valley, San Diego Co., California, USA
Copper
Copper
Emke Mine, Onganja, Seeis, Namibia
Cerussite
Cerussite
Touissit, Jerada Province, Oriental Region, Morocco
Chalcopyrite on Dolomite
Chalcopyrite on Dolomite
Yuncheng, Shanxi Prov., China
Cerussite
Cerussite
Tsumeb, Namibia
Tsavorite with Pyrite
Tsavorite with Pyrite
Merelani Hills, Arusha, Tanzania
Browse the Updates:
Mixed Minerals
July 14, 2026
Mixed Minerals
June 22, 2026
Mixed Minerals
June 3, 2026
Copper Crystals from the Rocklands Mine
May 29, 2026
60% Off Sale!
May 20, 2026
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