n Minerals

Orpiment from Shimen Mine, Hunan Province, China

Orpiment from Twin Creeks Mine, Cut 62, Humboldt County, Nevada

Orpiment from Twin Creeks Mine, Humboldt County, Nevada

Orpiment from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment from Shimen Mine, Hunan Province, China

Orpiment from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment from Getchell Mine, Humboldt County, Nevada

Orpiment from Shimen Mine, Hunan Province, China

Orpiment from Shimen Mine, Hunan Province, China

Orpiment from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment from Twin Creeks Mine, Humboldt County, Nevada

Orpiment from Twin Creeks Mine, Cut 62, Humboldt County, Nevada

Orpiment from Shimen Mine, Hunan, China

Orpiment from Shimen Mine, Hunan, China

Orpiment from El'brusskiy Mine, 35 km NE of Mount Elbrus, Kabardino-Balkarian Republic, Russia

Orpiment from Twin Creeks Mine, Cut 62, Humboldt County, Nevada

Orpiment from El'brusskiy Mine, 35 km NE of Mount Elbrus, Kabardino-Balkarian Republic, Russia

Orpiment from Shimen Mine, Hunan, China

Orpiment from Shimen Mine, Hunan Province, China

Orpiment and Calcite from El'brusskiy Mine, 35 km NE of Mount Elbrus, Kabardino-Balkarian Republic, Russia

Orpiment and Calcite from Shimen Mine, Hunan, China

Orpiment and Calcite from Gold Bar Mine, Antelope District, Eureka County, Nevada

Orpiment and Realgar from White Caps Mine, Manhattan District, Nye County, Nevada

Orpiment and Realgar from White Caps Mine, Manhattan District, Nye County, Nevada

Orpiment and Realgar from White Caps Mine, Manhattan District, Nye County, Nevada

Orpiment in Calcite from Shimen Mine, Hunan, China

Orpiment in Calcite from Shimen Mine, Hunan, China

Orpiment in Calcite with Realgar from Shimen Mine, Hunan, China

Orpiment in Calcite with Realgar from Shimen Mine, Hunan, China

Orpiment on Arsenopyrite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Barite from El'brusskiy Mine, 35 km NE of Mount Elbrus, Kabardino-Balkarian Republic, Russia

Orpiment on Barite from El'brusskiy Mine, 35 km NE of Mount Elbrus, Kabardino-Balkarian Republic, Russia

Orpiment on Hutchinsonite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite with Hutchinsonite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment on Pyrite with Quartz from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Barite from Twin Creek Mine, Humboldt, Nevada

Orpiment with Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Calcite from Shimen Mine, Hunan, China

Orpiment with minor Realgar from Getchell Mine, Humboldt County, Nevada

Orpiment with Realgar from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Realgar from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment with Realgar from Getchell Mine, Humboldt County, Nevada

Orpiment with Realgar from Getchell Mine, Humboldt County, Nevada

Orpiment with Realgar from Getchell Mine, Humboldt County, Nevada

Orpiment with Realgar from Mercur District, Toole County, Utah

Orpiment, Barite, Realgar from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment, Barite, Realgar from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment, Calcite, Realgar from Getchell Mine, Humboldt County, Nevada

Orpiment, Hutchinsonite, Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment, Hutchinsonite, Barite from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment, Pyrite, Quartz from Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru

Orpiment, Realgar, Pyrite from Getchell Mine, Humboldt County, Nevada

Orthoclase (Baveno Twin) from Tahara, Hirukawa, Gifu, Japan

Orthoclase (Baveno- and Manebach-Twinned) from Baveno, Novara, Piemonte, Italy

Orthoclase (Baveno-Law Twinned) with Chlorite from St. Gotthard, Kanton Uri, Switzerland

Orthoclase (Baveno-Law Twinned) with Quartz from Chilas, Diamar District, Gilgit-Baltistan, Pakistan

Orthoclase (Baveno-Law Twins) from Organ District, Doña Ana County, New Mexico

Orthoclase (Carlsbad-Law Twinned) from El Escorial, Madrid, Spain

Orthoclase and Quartz with Chlorite coating from St. Gotthard, Kanton Uri, Switzerland

Orthoclase and Smoky Quartz from Moat Mountain, Hale's Location, Carroll County, New Hampshire

Orthoclase on Microcline (Baveno Law Twin) from Baveno, Verbano-Cusio-Ossola, Piemonte, Italy (Type Locality for Baveno Law of twinned feldspar)

Orthoclase var. Adularia (V-twinned) from Copper Mountain, south of Sulzer, Prince of Wales Island, Alaska

Orthoclase var. Adularia on Datolite with Stilpnomelane from Route 72, Ellis Street Exit, New Britain, Hartford County, Connecticut

Orthoclase var. Adularia on Prehnite and Datolite from Ellis Street Exit, Rt. 72, New Britain, Connecticut

Orthoclase var. Adularia on Quartz from Griessertal, St. Gotthard, Switzerland

Orthoclase var. Adularia on Quartz from Hashupi, Shigar Valley, Gilgit-Baltistan, Pakistan

Orthoclase var. Adularia on Smoky Quartz from Maderanertal, Kanton Uri, Switzerland

Orthoclase var. Adularia pseudomorph after Childrenite from Linopolis, Minas Gerais, Brazil

Orthoclase var. Adularia pseudomorphs after Heulandite or Glauberite from Wester Cochno, West Dunbartonshire, Scotland

Orthoclase var. Adularia pseudomorphs after Heulandite or Glauberite from Wester Cochno, West Dunbartonshire, Scotland

Orthoclase var. Adularia twinned crystals with Chlorite coating from Rot Wichel, Fellital, Kanton Uri, Switzerland

Orthoclase var. Adularia Twins from Grimsel Pass, Haslital, Bern, Switzerland

Orthoclase var. Adularia Twins from Cavradischlucht (Cavradi Gorge), Tujetsch, Grischun (Graubünden), Switzerland

Orthoclase var. Adularia Twins with Chlorite from St. Gotthard, Kanton Uri, Switzerland

Orthoclase var. Adularia with Actinolite and Clinozoisite-Epidote from Hashupi, Shigar Valley, Gilgit-Baltistan, Pakistan

Orthoclase var. Adularia with Actinolite var. Byssolite and Chlorite from St. Gotthard, Kanton Uri, Switzerland

Orthoclase var. Adularia with Albite and Chlorite from Acushnet Quarry, Bristol County, Massachusetts

Orthoclase var. Adularia with Chlorite and Apatite from Fieschergletscher, Wallis, Switzerland

Orthoclase var. Adularia with Chlorite and Titanite from Kreuziltal, Val Tavetsch, Grischun (Graubünden), Switzerland

Orthoclase var. Adularia with Chlorite coating from Aukopel, Kairnten, Austria

Orthoclase var. Adularia with Chlorite coating from Switzerland

Orthoclase var. Adularia with Chlorite coating from Tilcon Quarry, Acushnet, Bristol County, Massachusetts

Orthoclase var. Adularia with Chlorite coating from Lucmanier (Valle Del Lucomagno), Kanton Tessin, Switzerland

Orthoclase var. Adularia with Chlorite coating from Warren Bros. Quarry, Acushnet, Bristol County, Massachusetts

Orthoclase var. Adularia with Chlorite coating from Val Medel, Grischun, Switzerland

Orthoclase var. Adularia with Chlorite coating from Val Cristallina, Grischun, Switzerland

Orthoclase var. Adularia with Chlorite coating from Piz Starlera, Val Cristallina, Grisons, Switzerland

Orthoclase var. Adularia with Chlorite inclusions from Val Malenco, north of Sondrio, Lombardy, Italy

Orthoclase var. Adularia with Chlorite inclusions from Teufelsmühle, Habachtal, Austria

Orthoclase var. Adularia with Clinochlore from Gerental, Kanton Wallis, Switzerland

Orthoclase var. Adularia with minor Chlorite from Val Nalps, Tujetsch, Grischun (Graubünden), Switzerland

Orthoclase var. Adularia, Goethite pseudomorphs after Pyrite, Andradite Garnet from Copper Mountain, Prince of Wales Island, Alaska

Orthoclase var. Amazonite Carlsbad Twin from Pike's Peak Batholith, El Paso County, Colorado

Orthoclase var. Baveno Twin from Washington Mine, Robinson County, North Carolina

Orthoclase var. Baveno-law twin with Quartz from Varese, Lombardy, Italy

Orthoclase var. Baveno-Twin with Quartz from Lake Maggiore, Baveno, Italy (Type Locality for Baveno-Twins)

Orthoclase var. Carlsbad Twin from Climax District, Lake County, Colorado

Orthoclase var. Carlsbad Twin from Goodspring, Clark County, Nevada

Orthoclase var. Carlsbad Twin from Pike's Peak Batholith, El Paso County, Colorado

Orthoclase var. Carlsbad Twin from Goodspring, Clark County, Nevada

Orthoclase var. Carlsbad Twin from Gunheath Pit, St. Austell District, Cornwall, England

Orthoclase var. Carlsbad Twin from Goodsprings District, Clark County, Nevada

Orthoclase var. Carlsbad Twin from White Eagle Mine, Willow Creek Camp, Saline Valley, Inyo County, California

Orthoclase var. Carlsbad Twins from Ray, Mineral Creek District, Pinal County, Arizona

Orthoclase var. Carlsbad-twin from Goodsprings District, Clark County, Nevada

Orthoclase var. Carlsbad-twins from Summit County, Colorado

Orthoclase var. Manebach Twin with Smoky Quartz from Tanokamiyama, Omi, Shiga, Japan

Orthoclase var. Moonstone with Actinolite from Southbridge, Worcester County, Massachusetts

Orthoclase var. Sanidine from Wehr Eifel, Westphalia, Germany

Orthoclase var. Sunstone from Scrub Oaks Mine, Mine Hill, Dover, Morris County, New Jersey

Orthoclase var. Valencianite from La Valencia Mine, Guanajuato, Mexico

Orthoclase var. Valencianite from Valenciana Mine, Guanajuato, Mexico

Orthoclase var. Valencianite Adularia from La Valenciana Mine, Guanajuato, Mexico

Orthoclase var. Valencianite with Calcite var. Argentine from La Valencia Mine, Guanajuato, Mexico

Orthoclase with Rutile inclusions from Switzerland

Orthoclase, Carlsbad-twin from Pegmatite near Chuquicamata, Antofagasta, Chile

Orthoclase, Schorl Tourmaline, Almandine, Quartz from Greenfield, Saratoga County, New York

Orthoclase-Microcline from St. Lawrence County, New York

Osmium var. Iridosmine from Nevyansk, Yekaterinburg, Ural Mountains, Sverdlovsk Oblast', Russia

Osmium Var. Iridosmine from California

Osumilite and Phlogopite (micromount) from North Sister Mountain, Lane County, Oregon

Osumilite on Tridymite from Mount Arci, Marrubiu, Oristano Province, Sardinia, Italy

Osumilite on Tridymite from Obsidian Cliffs, North Sister Mountain, Lane County, Oregon

Otavite inclusions in Smithsonite from Monte Cristo Mine, Rush Creek District, Marion County, Arkansas

Otavite, Mimetite, Cerussite, Aragonite var. Tarnowitzite from Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia (Type Locality for Otavite)

Ovamboite in Germanite-Renierite matrix from Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia (Type Locality for Ovamboite and Germanite)

Oxalic Acid Crystals (Synthetic) from Man-made

Oxalic Acid Crystals (Synthetic) from Man-made

Oxykinoshitalite (IMA 2004-013) from Fernando de Noronha Island, 326 km northeast of Cabo de Sao Roque, Pernambuco, Brazil (Type Locality for Oxykinoshitalite)

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

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

Ozokerite (mixture of hydrocarbons) from Spanish Fork Canyon, Utah County, Utah

Pachnolite from Ivigtut, Arsuk Firth (Arsukfjord), Kitaa Province, Greenland (Type Locality for Pachnolite)

Pachnolite from Ivigtut, Arsuk Firth (Arsukfjord), Kitaa Province, Greenland (Type Locality for Pachnolite)

Pachnolite from Ivigtut, Arsuk Firth (Arsukfjord), Kitaa Province, Greenland (Type Locality for Pachnolite)

Palladobismutharsenide from Stillwater Complex, Beartooth Mountains, Stillwater County, Montana (Type Locality for Palladobismutharsenide)

Panasqueiraite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal (Type Locality for Panasqueiraite)

Panunzite from Valle de Diablo, Somma-Vesuvius Complex, Campania, Italy (Type Locality for Panunzite)

Papagoite and Ajoite from New Cornelia Mine, Ajo, Pima County, Arizona (Type Locality for Papagoite and Ajoite)

Parabutlerite, Amarantite, Copiapite from Mina Alcaparrosa, Calama, El Loa Province, Chile (Type Locality for Parabutlerite)

Paracelsian from Madre Quarry, Candoglia, Piemonte, Italy (Type Locality for Paracelsian)

Paracelsian from Benallt Mine, Llanfaelrhys, Gwynedd, Wales