Chalcopyrite Copper iron sulphide Temagami Ontario Canada 8012.JPG gem mineral crystal Chalcopyrite Copper iron sulphide Temagami O
Steenstrupine-dark brown in ussingite-purple (Basic cerium lanthanum sodium manganese silicate and phosphate) Location;Lovozero massif, Kola Peninsula, Russia rock mineral object Steenstrupine-dark brown in us
Apatite variety Chlorapatite (Calcium chloro-phosphate) Location;Oodegaarden, Bamle Parish, Telemark, Norway rock mineral object Apatite variety Chlorapatite
Biotite (Basic potassium magnesium iron aluminum silicate) Location;Adirondack Mountains, New York rock mineral object Biotite
Tenorite in allophane (Copper oxide) Location;Madalena, Socorro County, New Mexico rock mineral object Tenorite in allophane
Titantaramellite in sanbornite (Barium titanium iron magnesium borosilicate and chloride) Location;Esquire #1 Mine, Rush Creek, Fresno County, California rock mineral object Titantaramellite in sanbornite
Vivianite with triphylite and feldspar (Hydrous iron phosphate) Custer County, South Dakota rock mineral object Vivianite with triphylite and
Corundum variety Ruby (Aluminum oxide) | Location;Froland, Norway rock mineral object Corundum variety Ruby
Arthurite on rock (Hydrous basic copper iron arsenate) Location;Majuba Hill, Pershing County, Nevada rock mineral object Arthurite on rock
Thucholite in calcite (Hydrocarbon) Location;Algom Nordic Mine, Elliot Lake, Ontario, Canada rock mineral object Thucholite in calcite
Barite nodule piece (Barium sulfate) Location;Cache County, Oklahoma rock mineral object Barite nodule piece
Tyuyamunite on limestone (Hydrous calcium uranyl-vanadate) Location;Grants, Lalencia County, New Mexico rock mineral object Tyuyamunite on limestone
Thucholite in calcite (Hydrocarbon) Location;Algom Nordic Mine, Elliot Lake, Ontario, Canada rock mineral object Thucholite in calcite