Mineral Museum of Mineral Species Beginning with A

Arfvedsonite (rare twinned terminated Arfvedsonite crystals) on Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite (rare twinned terminated crystals) with Albite from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite and Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite and Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite and Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite and Smoky Quartz with Zircon from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite in Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite in Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite on Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite on Microcline from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite on Microcline from 5 km NE of Malosa Mountain, Zomba District, Malawi

Arfvedsonite on Microcline from Mount Malosa, Zomba District, Malawi

Arfvedsonite pseudomorph after Aegirine from Mount Malosa, Zomba District, Malawi

Arfvedsonite with Albite with Zircon from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Arfvedsonite, Microcline, Zircon from Hurricane Mountain, east of Intervale, Carroll County, New Hampshire

Argentite from Jáchymov (formerly Joachimsthal), Bohemia, Czech Republic

Argentite from Zacatecas, Mexico

Argentojarosite from Tintic Standard Mine, Juab County, Utah (Type Locality for Argentojarosite)

Arhbarite with Chrysocolla and Conichalcite from El Guanaco Mine, Guanaco, Antofagasta, Chile

Armbrusterite (IMA2005-035) from Kirovskii Mine, Mt. Kukisvumchorr, Chibiny, Kola Peninsula, Russia (Type Locality for Armbrusterite)

Armstrongite from Khan-Bogdinskii Massif, Gobi Desert, Mongolia (Type Locality for Armstrongite)

Arrojadite-(BaNa) and Melonjosephite from D'Angarf-sud Pegmatite, Anti-Atlas Mountains, Plaine des Zenaga, Morocco (Type Locality for Melonjosephite)

Arrojadite-(KFe) from G. F. Smith Mine, Chandlers Mill, west of Newport, Sullivan County, New Hampshire

Arrojadite-(KFe) and Vivianite from Big Fish River, 67 km northwest of Aklavik, Yukon, Canada

Arsendescloizite with arsenic-rich Vanadinite from Red Bird Mine, Antelope Springs District, Pershing County, Nevada

Arsenic from Erzgebirge, Saxony, Germany

Arsenic from Copiapo, Chile

Arsenic from Burraton Combe, St. Stephens-by-Saltash, Cornwall, England

Arsenic from Schneeberg District, Sachsen (Saxony), Germany

Arsenic from Watson Creek, British Columbia, Canada

Arsenic from Lavrion (Laurium) Mining District, Attica Peninsula, Greece

Arsenic from St. Andreasberg District, 25 km SE of Clausthal-Zellerfeld, Harz Mountains, Lower Saxony, Germany

Arsenic from Alacrán Mine, Pampa Larga District, near Tierra Amarilla, Copiapó, Atacama, Chile

Arsenic from Münstertal, 16 km south of Freiberg, Baden-Württemberg, Germany

Arsenic from Schneeberg District, Saxony, Germany

Arsenic (crystals) from Akatani Mine, Fukui Prefecture, Honshu, Japan

Arsenic, native element from Andreasberg, Hartz Mountains, Germany

Arseniopleite from Sjö Gruvan, Grythyttan, Orebro, Sweden (Type Locality for Arseniopleite)

Arseniopleite from Sjö Mine, Grythyttan, Västmanland, Sweden (Type Locality for Arseniopleite)

Arsenohauchecornite and Chalcopyrite from Vermillion Mine, Denison Township, Sudbury District, Ontario, Canada (Type Locality for Arsenohauchecornite)

Arsenolamprite with Arsenic from Pampa Larga District, Tierra Amarilla, Copiapó, Atacama, Chile

Arsenolite from Manhattan, Nevada

Arsenolite from White Caps Mine, Manhattan District, Nye County, Nevada

Arsenolite on Arsenic from Schneeberg, Erzgebirge, Saxony, Germany

Arsenopyrite from Wine Harbor, Nova Scotia, Canada

Arsenopyrite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite from Biggenden Mines, Queensland, Australia

Arsenopyrite from Rauriser Tal, Salzburg, Austria

Arsenopyrite from Noche Buena, Zacatecas, Mexico

Arsenopyrite from Llallagua, Bolivia

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Akerman Gold Mine, Madoc, Ontario, Canada

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Caldbeck Fells, West Cumberland Iron Mining District, Cumbria, England

Arsenopyrite from San Antonio Mine, San Antonio el Grande, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Noche Buena Mine, Mazapil, Zacatecas, Mexico

Arsenopyrite from Mina Palmillas, Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Ecton Mine, Audubon, Montgomery County, Pennsylvania

Arsenopyrite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Deloro Mine, Ontario, Canada

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite from Goldenville, Guysborough County, Nova Scotia, Canada

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Trepca District, 10 km east of Kosozska Mitrovica, Kosovo

Arsenopyrite from Penberthy Croft Mine, St. Hilary, Cornwall, England

Arsenopyrite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite from Salzburg, Austria

Arsenopyrite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite from Zacatecas, Mexico

Arsenopyrite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite from Huanggang Mine, Keshiketeng Qi, Inner Mongolia Autonomous Region, China

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Yaogangxian Mine, Nanling Mountains, Hunan, China

Arsenopyrite from Yaogangxian Mine, Nanling Mountains, Hunan, China

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite from Franconia Iron Mine, Ore Hill, Grafton County, New Hampshire

Arsenopyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite (twinned crystals) from Hidalgo del Parral, Chihuahua, Mexico

Arsenopyrite and Calcite from Concepción del Oro, Zacatecas, Mexico

Arsenopyrite and Chalcopyrite on Sphalerite from Trepca District, 10 km east of Kosozska Mitrovica, Kosovo

Arsenopyrite and Dolomite from Himmelsfürst Mine, Freiberg, Saxony, Germany

Arsenopyrite and Fluorite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite and Fluorite from Kappusan, Toksong(?), South Hamgyong (Kankyo Nan-do), South Korea

Arsenopyrite and Muscovite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite and Muscovite on Ferberite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite and Quartz from Levant Mine, St. Just, Cornwall, England

Arsenopyrite and Quartz from Qiang Gi Dong, Hunan, China

Arsenopyrite and Quartz from Trepca District, 10 km east of Kosozska Mitrovica, Kosovo

Arsenopyrite and Quartz from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite and Quartz on Galena from Noche Buena Mine, Zacatecas, Mexico

Arsenopyrite and Siderite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite and Siderite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite and Siderite on Quartz from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite and Sphalerite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite in garnet sandstone from ZC Mine, Level 16, Broken Hill, New South Wales, Australia

Arsenopyrite on Pyrite pseudomorph after Pyrrhotite from Mina el Potosí, Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite on Quartz from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite on Quartz from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite on Quartz from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite on Sphalerite from Quiruvilca Mine, Santiago de Chuco Province, La Libertad Department, Peru

Arsenopyrite with Apatite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite with Calcite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite with Muscovite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite with Muscovite on Ferberite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite with Pyrite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite with Quartz from Municipio de Zacatecas, Zacatecas, Mexico

Arsenopyrite with Quartz from Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China

Arsenopyrite with Quartz, Calcite, Muscovite from Yaogangxian Mine, Nanling Mountains, Hunan, China

Arsenopyrite with Siderite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite with Siderite and Pyrite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite with Sphalerite from Mina Palmillas, Hidalgo de Parral, Chihuahua, Mexico

Arsenopyrite with Sphalerite from Trepca Stan Terg Mine, Trepca District, 10 km east of Kosozska Mitrovica, Kosovo

Arsenopyrite with Sphalerite from Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite with Sphalerite and Quartz from Naica District, Saucillo, Chihuahua, Mexico

Arsenopyrite, Dravite-Schorl Tourmaline, Muscovite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite, Fluorite, Ferberite, Muscovite, Quartz from Yaogangxian Mine, Nanling Mountains, Hunan, China

Arsenopyrite, Galena, Sphalerite from Dalnegorsk, Primorskiy Kray, Russia

Arsenopyrite, Galena, Sphalerite, Calcite from Naica District, Saucillo, Chihuahua, Mexico

Arsenopyrite, Jamesonite on Pyrite pseudomorphs after Pyrrhotite from Noche Buena, Mazapil, Zacatecas, Mexico

Arsenopyrite, Pyrite, Quartz from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite, Quartz, Calcite from Mina el Potosí, Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico

Arsenopyrite, Quartz, Calcite from Mina Palmillas, Hidalgo de Parral, Chihuahua, Mexico

Arsenopyrite, Quartz, Dolomite-Calcite, Fluorapatite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite, Quartz, Fluorite, Muscovite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite, Quartz, Fluorite, Muscovite from Yaogangxian Mine, Nanling Mountains, Hunan Province, China

Arsenopyrite, Quartz, Siderite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite, Quartz, Siderite, Calcite from Panasqueira Mine, Barroca Grande, 21 km. west of Fundao, Castelo Branco, Portugal

Arsenopyrite, Quartz, Sphalerite, Barite from Freiberg District, Saxony, Germany (Type Locality for Arsenopyrite)

Arsenopyrite, Sphalerite, Pyrite, Quartz from Stari Trg Mine, Trepca, Serbia

Arsenopyrite, Sphalerite, Siderite from Trepca District, 10 km east of Kosozska Mitrovica, Kosovo

Arsentsumebite and Azurite from Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia (Type Locality for Arsentsumebite)

Arsentsumebite, Azurite, Cerussite from Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia (Type Locality for Arsentsumebite)

Arthurite from Hingston Down Consols Mine, Calstock, Cornwall, England (Type Locality for Arthurite)

Arthurite from Majuba Hill, Pershing County, Nevada