a Minerals

Murmanite from Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia (Type Locality for Murmanite)

Murmanite with Aegirine from Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia (Type Locality for Murmanite)

Murmanite with Zorite and Eudialyte from Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia (Type Locality for Murmanite)

Muscovite (columnar crystals) on Albite var. Cleavelandite from Emmons Quarry, southeastern slope of Uncle Tom Mountain, Greenwood, Oxford County, Maine

Muscovite (columnar crystals) on Albite var. Cleavelandite from Emmons Quarry, southeastern slope of Uncle Tom Mountain, Greenwood, Oxford County, Maine

Muscovite (columnar crystals) on Albite var. Cleavelandite from Emmons Quarry, southeastern slope of Uncle Tom Mountain, Greenwood, Oxford County, Maine

Muscovite (fishtail-twinned crystals) from Minas Gerais, Brazil

Muscovite (Hafnium-rich) from Broken Hill, New South Wales, Australia

Muscovite (Hafnium-rich) from Broken Hill, New South Wales, Australia

Muscovite (large book of thin crystals) from Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut

Muscovite (large book of thin crystals) from Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut

Muscovite (pocket crystals) with Hyalite Opal from Lord Hill Quarry, Stoneham, Oxford County, Maine

Muscovite (rare red color) from Minas Gerais, Brazil

Muscovite (twinned star-shaped crystals) from Jenipapo District, Itinga, Minas Gerais, Brazil

Muscovite (twinned star-shaped crystals) from Jenipapo District, Itinga, Minas Gerais, Brazil

Muscovite and Quartz with Albite from Minas Gerais, Brazil

Muscovite and Stilbite from Pack Rat Mine, San Diego County, California

Muscovite Mica from Delaware County, Pennsylvania

Muscovite Mica from Cleveland County, North Carolina

Muscovite Mica from Songo Pond Quarry, Albany, Oxford County, Maine

Muscovite Mica from near Shelby, Cleveland County, North Carolina

Muscovite Mica from near Shelby, Cleveland County, North Carolina

Muscovite Mica from Mitchell County, North Carolina

Muscovite Mica from Emmons Quarry, southeastern slope of Uncle Tom Mountain, Last Day pocket, Greenwood, Oxford County, Maine

Muscovite Mica from Ze Pinto Prospect, Conselheiro Peña, Doce valley, Minas Gerais, Brazil

Muscovite Mica from Hiddenite, Alexander County, North Carolina

Muscovite Mica (curved crystals) from San Domingo Wash, 14.7 km east of Wickenburg, Maricopa County, Arizona

Muscovite Mica on Quartz from Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut

Muscovite Mica with Schorl Tourmaline from Minas Gerais, Brazil

Muscovite on Albite from Big Quarry, Alstead District, Cheshire County, New Hampshire

Muscovite on Smoky Quartz from Minas Gerais, Brazil

Muscovite over Albite with Fluorapatite from Jenipapo District, Itinga, Minas Gerais, Brazil

Muscovite pseudomorph after Cordierite from Llallagua, Bustillos Province, Potosi Department, Bolivia

Muscovite pseudomorph after Iolite (var. Pinite) from Annaberg, Saxony, Germany

Muscovite pseudomorph after Schorl from Gavilan Hills, west of Perris, Riverside County, California

Muscovite pseudomorph after Spodumene from Virgem de Lapa, Minas Gerais, Brazil

Muscovite pseudomorph after Spodumene (a.k.a. Cymatolite) from Goshen, Hampshire County, Massachusetts

Muscovite pseudomorph after Spodumene (var. Pinite) from Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut

Muscovite pseudomorph after Topaz (a.k.a. Gilbertite) from Cornwall, England

Muscovite pseudomorph after Tourmaline from Noyes Mountain, Greenwood, Maine

Muscovite pseudomorph after Tourmaline (Sericite) from Willow Spring Ranch, Oracle, Pinal County, Arizona

Muscovite pseudomorph after Tourmaline (Sericite) from Willow Spring Ranch, Oracle, Pinal County, Arizona

Muscovite pseudomorphs after Andalusite from Champion Mine, 6 km WSW of White Mountain Peak, White Mountains, Mono County, California

Muscovite pseudomorphs after Elbaite Tourmaline from Mount Mica Quarry, Paris, Oxford County, Maine

Muscovite pseudomorphs after Schorl Tourmaline from Noyes Mountain, Greenwood, Oxford County, Maine

Muscovite var. Alurgite from Cajon Pass, San Bernardino County, California

Muscovite var. Ball-Peen Mica from Branchville Quarry, Redding, Fairfield County, Connecticut

Muscovite var. Ball-Peen Mica from Branchville Quarry, Redding, Fairfield County, Connecticut

Muscovite var. Ball-Peen Mica from Branchville Quarry, Redding, Fairfield County, Connecticut

Muscovite var. Ball-Peen Mica from Branchville Quarry, Redding, Fairfield County, Connecticut

Muscovite var. Ball-Peen Mica from Lord Hill Quarry, Stoneham, Oxford County, Maine

Muscovite var. Ball-Peen Mica from Chandler Mine, Raymond, Rockingham County, New Hampshire

Muscovite var. Damourite pseudomorph after Elbaite Tourmaline from (Mount Rubellite) Hebron, Oxford County, Maine

Muscovite var. Fuchsite from Wolf Neck, Freeport, Maine

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from near Rutland, Rutland County, Vermont

Muscovite var. Fuchsite from Wolf Neck, Cumberland County, Maine

Muscovite var. Fuchsite from Wolf Neck, Cumberland County, Maine

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Fuchsite from Minas Gerais, Brazil

Muscovite var. Margarodite from Trumbull Tungsten Mine, Fairfield County, Connecticut

Muscovite var. Mariposite from Josephine Mine, Mariposa County, California (Type Locality for Mariposite)

Muscovite var. Mariposite from Maricopa County, Arizona

Muscovite var. Mariposite from Josephine Mine, Mariposa County, California (Type Locality for Mariposite)

Muscovite var. Mariposite from Mariposa County, California (Type Locality for Mariposite)

Muscovite var. Mariposite from Mariposa County, California (Type Locality for Mariposite)

Muscovite var. Mariposite from Mariposa County, California (Type Locality for Mariposite)

Muscovite var. Red Muscovite from North Bay, Nipissing District, Ontario, Canada

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Rose Muscovite with Allanite-(Ce) from Harding Mine, 8 km east of Dixon, Taos County, New Mexico

Muscovite var. Sericite pseudomorph after Staurolite from (Fairy Stone State Park?), Patrick County, Virginia

Muscovite var. Sericite pseudomorph after Staurolite with Almandine Garnet from Fannin County, Georgia

Muscovite var. Star Mica from Minas Gerais, Brazil

Muscovite with Albite from Lord Hill Quarry, Stoneham, Oxford County, Maine

Muscovite with Albite from Linopolis, Divino das Laranjeiras, Minas Gerais, Brazil

Muscovite with Albite from Conselheiro Peña, Minas Gerais, Brazil

Muscovite with Cacoxenite-Bermanite inclusions from Prospect No. 28 (Two Bit prospect), Rockford, Coosa County, Alabama

Muscovite with Elbaite from Haddam Neck, Middlesex County, Connecticut

Muscovite with Fluorapatite, from Strickland Quarry, Collins Hill, Portland, Middlesex County, Connecticut

Muscovite with Magnetite inclusions from Jacob Swayne's Mica Mine, 1/2 mile south of Fairville, Pennsbury Township, Chester County, Pennsylvania

Muscovite with Magnetite inclusions from Roberts Avenue at Stokley Street, Wayne Junction, Philadelphia, Pennsylvania

Muscovite with Magnetite inclusions from Jacob Swayne's Mica Mine, 1/2 mile south of Fairville, Pennsbury Township, Chester County, Pennsylvania

Muscovite with Magnetite inclusions from Jacob Swayne's Mica Mine, 1/2 mile south of Fairville, Pennsbury Township, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Madras, India

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with Magnetite inclusions (Graphic Mica) from Swayne's Farm, Fairville, Chester County, Pennsylvania

Muscovite with oriented magnetite, rutile, hematite inclusions from 93rd Street at Riverside Drive, Manhattan Island, New York City, New York County, New York

Muscovite with oriented magnetite, rutile, hematite inclusions from 93rd Street at Riverside Drive, Manhattan Island, New York City, New York County, New York

Muscovite with Tourmaline inclusions from Minas Gerais, Brazil

Muscovite, Albite, Eosphorite, Carbonate-fluorapatite from Rose Quartz Locality, Plumbago Mountain, Newry, Oxford County, Maine

Muscovite, Quartz, Elbaite Tourmaline from Bennett Quarry, Buckfield, Oxford County, Maine

Muscovite-2M and Smoky Quartz from Minas Gerais, Brazil

Muscovite-Biotite Mica from Moat Mountain, Hale's Location, Carroll County, New Hampshire

Muscovite-Biotite Mica from Moat Mountain, Hale's Location, Carroll County, New Hampshire

Museumite and Nagyagite from Nagyag, Metaliferi Mountains, Transylvania, Romania (Type Locality for Museumite and Nagyagite)

Mushistonite var. Cuprocassiterite from Etta Tin Mine, Keystone District, Pennington County, South Dakota

Nabesite (IMA 2000-024) from Kvanefjeld Plateau, Julianehaab District, Ilímaussaq, Greenland (Type Locality for Nabesite)

Nadorite from Djebel Nador, Constantine, Algeria (Type Locality for Nadorite)

Nadorite from Djebel Nador, Constantine, Algeria (Type Locality for Nadorite)

Nadorite from Långban Mine, Filipstad, Värmland, Sweden

Nadorite from Mine de Nador n'Bails, Djebel Nador, Algeria (Type Locality for Nadorite)

Nadorite var. Ochrolite from Långban Mine, Filipstad, Värmland, Sweden

Nadorite with Smithsonite from Mine du Djebel Debar, Meskhootine, Constantine Province, Algeria (Type Locality for Nadorite)

Nadorite with Valentinite from Mine de Nador n'Bails, Djebel Nador, Algeria (Type Locality for Nadorite)

Nagashimalite from Mogurazawa Mine, Kiryu City, Gumma Prefecture, Honshu Island, Japan (Type Locality for Nagashimalite)

Nagyágite and Rhodochrosite from Sacarîmb (Nagyág), Thunedoara, Transylvania, Romania (Type Locality for Nagyágite)

Nahcolite from Anvil Point, Rifle, Garfield County, Colorado

Nakauriite from Cedar Hill Quarry, Lancaster County, Pennsylvania

Nakauriite from Nakauri Mine, Aichi, Shinshiro, Honshu, Japan (Type Locality for Nakauriite)

Nakauriite from Nakauri Mine, Aichi, Shinshiro, Honshu, Japan (Type Locality for Nakauriite)

Nakauriite from Penn-MD Quarry, near Peach Bottom, Fulton Township, Lancaster County, Pennsylvania

Nakauriite on Serpentine from Cedar Hill Quarry, State Line District, Lancaster County, Pennsylvania

Nakauriite on Serpentine from Cedar Hill Quarry, State Line District, Lancaster County, Pennsylvania

Nambulite from Kombat Mine, Grootfontein, Otavi Mountain Land, Namibia

Nambulite from Kombat Mine, Grootfontein District, Namibia

Nambulite (2.42 carat faceted gemstone) from Kombat Mine, Grootfontein District, Namibia

Namibite and Beyerite from Mesopotamia 504 Farm, West of Khorixas, Kunene Region, Namibia (Type Locality for Namibite)

Nantokite from Broken Hill, New South Wales, Australia

Narsarsukite from Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Narsarsukite from Mont Saint-Hilaire, Québec, Canada