a Minerals

Ilmenite on Calcite with Nepheline from Vishnevye Mountains, Chelyabinsk Oblast', Southern Urals, Russia

Ilmenite on Quartz from Chip Mine, Uwharrie National Forest, Montgomery County, North Carolina

Ilmenite var. Menaccanite from Norway

Ilmenite var. Washingtonite from Litchfield County, Connecticut

Ilmenite var. Washingtonite in Quartz from Broadway at 6th Avenue, Manhattan Island, New York City, New York

Ilmenite var. Washingtonite in Quartz from 56th Street between Broadway and Sixth Avenue, Manhattan Island, New York City, New York County, New York

Ilmenite with minor Rutile on Quartz from Tormiq area, northwest of Skardu, Haramosh Mountains, Baltistan, Gilgit-Baltistan, Pakistan

Ilsemannite and Jordisite from Bullion Monarch Mine, Marysvale District, Piute County, Utah

Ilsemannite, Ferrimolybdite, Pyrite from Chino Mine, Santa Rita District, Grant County, New Mexico

Ilvaite from Miniera di Rio Marina, Isola d'Elba, Tuscan Archipelago, Livorno, Italy (Type Locality for Ilvaite)

Ilvaite from South Mountain District, Owyhee County, Idaho

Ilvaite from South Mountain District, Owyhee County, Idaho

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Mega Xhorio, Serifos Island, Greece

Ilvaite from First Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Rio Marina, Isola d'Elba, Tuscan Archipelago, Livorno, Italy (Type Locality for Ilvaite)

Ilvaite from Second Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from South Mountain District, Owyhee County, Idaho

Ilvaite from Isola d'Elba, Livorno Province, Tuscany, Italy (Type Locality for Ilvaite)

Ilvaite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite from Isola d'Elba, Tuscan Archipelago, Livorno, Italy (Type Locality for Ilvaite)

Ilvaite from Mega Xhorio, Serifos Island, Greece

Ilvaite from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite from Calamita Mine, Isola d'Elba, Tuscan Archipelago, Livorno, Italy (Type Locality for Ilvaite)

Ilvaite and Quartz from South Mountain District, Owyhee County, Idaho

Ilvaite and Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite and Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite and Quartz from Second Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite and Quartz from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite and Quartz from South Mountain District, Owyhee County, Idaho

Ilvaite and Quartz on Andradite Garnet over Hedenbergite from Mega Xhorio, Serifos Island, Greece

Ilvaite in Quartz from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite intersecting Calcite from South Mountain District, Owyhee County, Idaho

Ilvaite on Beta-Quartz from First Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Calcite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Calcite from Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Feldspar from Owyhee County, Idaho

Ilvaite on Hedenbergite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Pyrrhotite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Quartz from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Quartz from Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Quartz from Kurad Quarry, Mumbai (Bombay) District, Maharashtra, India

Ilvaite on Quartz from Second Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite on Quartz from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite on Quartz with Calcite from Dalnegorsk, Primorskiy Kray, Russia

Ilvaite on stalactitic Calcite from Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite with Calcite from Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China

Ilvaite with di-pyramidal Quartz from Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China

Ilvaite with Quartz from First Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite with Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Ilvaite with Quartz from Second Sovietskiy Mine, Dalnegorsk, Primorskiy Kray, Russia

Ilvaite with Quartz from Laxey Mine, South Mountain District, Owyhee County, Idaho

Imperial Topaz from Rodrigo Silva, Ouro Preto, Brazil

Imperial Topaz from Rodrigo Silva, Ouro Preto, Brazil

Imperial Topaz from Rodrigo Silva, Ouro Preto, Brazil

Imperial Topaz from Rodrigo Silva, Ouro Preto, Brazil

Imperial Topaz with Hematite from Rodrigo Silva, Ouro Preto, Brazil

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Inderite var. Lesserite and Ulexite from Jenifer Mine, Kramer District, Kern County, California (Type Locality for Lesserite)

Indicolite Tourmaline from Minas Gerais, Brazil

Indicolite Tourmaline from Mount Mica Quarry, Paris, Oxford County, Maine

Indicolite Tourmaline from Minas Gerais, Brazil

Indicolite Tourmaline from Skardu Area, Baltistan, Gilgit-Baltistan, Pakistan

Indicolite Tourmaline from Usakos, Namibia

Indicolite Tourmaline in Quartz from Dunton Quarry, Plumbago Mountain, Hall's Ridge, Newry, Oxford County, Maine

Inesite and Apophyllite from Fengsandong Mine, Yangxin, Hubei, China

Inesite and Apophyllite from Fengsandong Mine, Yangxin, Hubei, China

Inesite and Apophyllite from Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite and Apophyllite from North Mine, Broken Hill, New South Wales, Australia

Inesite and Xonotlite from Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite and Xonotlite from Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite on Calcite from Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite on Calcite from N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite over Barite from N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite with Calcite from Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite with Calcite from Hale Creek Mine, Trinity County, California

Inesite with Natrolite from N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inesite, Quartz, Pyrite, Calcite from Fengjiashan Mine, Faye, Huangshi, Hubei, China

Inesite, Xonotlite, Datolite, Quartz from Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa

Inyoite, Colemanite, Borax from Mount Blanco, Furnace Creek District, Inyo County, California (Type Locality for Inyoite and Colemanite)

Iodargyrite var. Iodyrite in Tocornalite from Broken Hill Proprietary Mine, New South Wales, Australia

Iowaite on Calcite from Palabora Mine, Phalaborwa Complex, Limpopo Province (formerly Transvaal), South Africa

Iranite with Fornacite and Chrysocolla from Chah Khouni Mine, Anarak District, Esfahan Province, Iran (Type Locality for Iranite)

Iranite with Hemihedrite and Herbertsmithite from Chah Khouni Mine, Anarak District, Esfahan Province, Iran (Type Locality for Iranite)

Iridium var. Ruthenosmiridium from Nizhne-Tagilisk, Ural Mountains, Sverdlovsk Oblast', Russia

Iridium-Osmium var. Osmiridium from (Salmon River), Alaska

Iron (native) from Qeqertarsuaq Island (Disko Island), Kitaa Province, Greenland

Iron (native) from Khungtukun Massif, Khatanga, Taimyr Peninsula, Russia

Iron (native) in Basalt from Bühl Hill, near Kassel, Hessen, Germany

Iron Pallasite Meteorite from Brenham, Kiowa County, Kansas

Iron Slag from near Thomasville, Clinton County, New York

Ishikawaite from Penfield Quarry, Portland, Middlesex County, Connecticut

Ishikawaite from Penfield Quarry, Portland, Middlesex County, Connecticut

Ishikawaite from Penfield Quarry, Portland, Middlesex County, Connecticut

Isocubanite, Bornite, Chalcopyrite, Pyrite from 3300 meter depth, 69°24'E-22°39'S, Meso Zone, Triple Junction, Central Indian Ridge, Indian Ocean

Isocubanite, Bornite, Chalcopyrite, Pyrite (Black Smoker Formation) from 3300 meter depth, 69°24'E-22°39'S, Meso Zone, Triple Junction, Central Indian Ridge, Indian Ocean

Isocubanite, Bornite, Chalcopyrite, Pyrite (Black Smoker Formation) from 3300 meter depth, 69°24'E-22°39'S, Meso Zone, Triple Junction, Central Indian Ridge, Indian Ocean

Iwashiroite-(Y) from Suishouyama Pegmatite, Kawamata, Honshu Island, Japan (Type Locality for Iwashiroite-(Y))

Jacobsite from Jakobsberg Mine, Nordmark, Värmland, Sweden (Type Locality for Jacobsite)

Jacobsite with Zincite from Taylor Mine, Franklin, Sussex County, New Jersey

Jacobsite, Copper, Epidote, Calcite from Jakobsberg Mine, Nordmark, Filipstad, Värmland, Sweden (Type Locality for Jacobsite)

Jacobsite, Copper, Epidote, Calcite from Jakobsberg Mine, Nordmark, Filipstad, Värmland, Sweden (Type Locality for Jacobsite)

Jacobsite, Copper, Epidote, Calcite from Jakobsberg Mine, Nordmark, Filipstad, Värmland, Sweden (Type Locality for Jacobsite)

Jacobsite, Copper, Epidote, Calcite from Jakobsberg Mine, Nordmark, Filipstad, Värmland, Sweden (Type Locality for Jacobsite)

Jacobsite, Copper, Epidote, Calcite from Jakobsberg Mine, Nordmark, Filipstad, Värmland, Sweden (Type Locality for Jacobsite)

Jade from Jade Cove, Monterey County, California

Jade from Jade Cove, Monterey County, California

Jadeite from New Zealand

Jadeite from Bland's Peak, Taliaferro Ridge, east of Leech Lake, Mendocino County, California

Jadeite (polished) from Myanmar (Burma)

Jadeite (polished) from Myanmar (Burma)

Jagoite and Melanotekite from Långban Mine, Canberra Stope, Filipstad, Värmland, Sweden (Type Locality for Jagoite and Melanotekite)

Jagowerite from Hess River, Yukon, Canada (Type Locality for Jagowerite)

Jahnsite-(CaMnMg) from Tip Top Mine, Custer District, Custer County, South Dakota (Type Locality for Jahnsite-(CaMnMg))

Jamborite from Ca'de'Ladri, near Bologna, Italy (Type Locality for Jamborite)

Jamborite pseudomorphs after Millerite in Quartz Geode from US Route 27 road cut, Halls Gap, Lincoln County, Kentucky

Jamborite pseudomorphs after Millerite in Quartz Geode from US Route 27 road cut, Halls Gap, Lincoln County, Kentucky

Jamborite pseudomorphs after Millerite in Quartz Geode from US Route 27 road cut, Halls Gap, Lincoln County, Kentucky

Jamborite pseudomorphs after Millerite in Quartz Geode from US Route 27 road cut, Halls Gap, Lincoln County, Kentucky

Jamborite pseudomorphs after Millerite in Quartz Geode from US Route 27 road cut, Halls Gap, Lincoln County, Kentucky

Jamesonite from Zacatecas, Mexico

Jamesonite from Treore Mine, St Teath, Wadebridge (St. Endellion), Cornwall, England (Type Locality for Jamesonite)

Jamesonite from Zacatecas, Mexico

Jamesonite from Stevens County, Washington

Jamesonite from Zacatecas, Mexico

Jamesonite from Mina San José, Oruro Department, Bolivia

Jamesonite (or Stibnite) on Pyrite from Sombrerete, Zacatecas, Mexico