Fahleite

Comments: Crystalline cleavage fragment of fahleite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fairbankite   Jarosite

Comments: Colorless to white crystals of fairbankite with orangish brown jarosite.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Fairfieldite

Comments: Transparent, cockscomb druse of fairfieldite crystals.
Location: Foote mine, Kings Mountain, Cleveland County, North Carolina, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Falcondoite

Comments: Solid mass of lime green falcondoite.
Location: Riddle, Douglas County, Oregon. USA. Scale: 4 cm.
© John Veevaert

Falkmanite

Comments: Metallic black platy striated falkmanite, with bronze luster in spots.
Location: Grube Bayerland, Waldsassen, Bavaria, Bayern, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Famatinite   Enargite

Comments: Violet metallic crystalline famatinite with black massive enargite.
Location: Cerro de Pasco, Pasco, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Famatinite

Comments: Dark, purplish black, massive famatinite.
Location: Tertiary volcanic massif, the Serrania de Laurani, Bolivia. Scale: Picture size 2 cm.
© Dave Barthelmy

Fangite   Lorandite

Comments: Brown crystals of fangite with red lorandite.
Location: Allchar, Roszdan, FYR Macedonia. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Faujasite-Na

Comments: Intergrown crystals of faujasite coated with opal.
Location: Kaiserstuhl, Baden-Wurttemburg, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Faustite

Comments: White botryoidal faustite on matrix.
Location: Rain Mine, Eureka County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fayalite

Comments: Flattened crystals of fayalite on cristobalite.
Location: Coso Hot Springs, Inyo County, California. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Fedorite   Charoite

Comments: Tan crystalline platy fedorite in pale violet charoite.
Location: Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fedorovskite

Comments: Brown crystalline fedorovskite.
Location: Solongo, Republic of Buryatia, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fedotovite   Dolerophanite   Chalcanthite

Comments: Brown crystals of dolerophanite with blue chalcanthite and green fedotovite.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Fedotovite   Chalcanthite

Comments: Green fedotovite with pale blue chalcanthite.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Feitknechtite

Comments: Brown feitknechtite with pink rhodonite.
Location: Ioi Mine, Ritto Cho, Shiga, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Feklichevite

Comments: Brownish to purplish-brownish crystal of feklichevite.
Location: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Felsobanyaite

Comments: Gray white crystalline micro grains of fels?banyaite on brown to yellow opal.
Location: Cavnik, Felsobanya, Maramures, Romania. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fenaksite

Comments: Tan to rose colored crystalline fenaksite with dark green-black crystalline pyroxene.
Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fencooperite

Comments: Micro black needles of fencooperite in white sanbornite and pinkish gillespite matrix.
Location: Trumbull Peak, Sierra Nevada, Mariposa Co., California, USA. Scale: 2x2x2cm.
© Tom Loomis / Dakota Matrix

Ferberite

Comments: Ferberite with minor siderite selvage.
Location: Panasqueira (2nd level), in the region of Beira Baixa, Portugal. Scale: 6 x 5 cm.
© Fabre Minerals

Ferberite   Anthoinite   Cerotungstite-(Ce)

Comments: Yellow cerotungstite-(Ce), with black ferberite veins and whitish anthoinite.
Location: Bugarama, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferchromide

Comments: Metallic microcrystal of ferchromide.
Location: Verkhneivinsk, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fergusonite-(Y)

Comments: Heavy mass of fergusonite-(Y) with one face polished flat to show the solid interior. Radioactive.
Location: Ambatofotsy, Betafo - Antsirab? region, Antananarivo Province, Madagascar. Scale: 6x2.5x1.5 cm.
© John Betts - Fine Minerals

Fermorite

Comments: Pinkish crystalline massive fermorite.
Location: Sitipar, Chindwara District, India. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fernandinite

Comments: Greenish-yellow fernandinite coatings on sandstone.
Location: Deremo-Snyder Mine, Egnar, San Miguel County, Colorado. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Feroxyhyte

Comments: Brown botryoidal feroxyhyte.
Location: Pachi Limani, Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrarisite

Comments: Translucent crystal spray of ferrarisite on matrix.
Location: Gift Grube, Sainte-Marie-aux-Mines, Alsace, Haute-Rhin, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferricopiapite

Comments: Earthy, yellow ferricopiapite, variety chalcanthite.
Location: Bisbee, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferricopiapite   Goldichite   Coquimbite

Comments: Prismatic to fibrous crystals of goldichite on white massive coquimbite with yellow ferricopiapite.
Location: Dexter No. 7 Mine, Calf Mesa, San Rafael Swell, Emery County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrierite-Na

Comments: Rounded crystalline aggregate of yellow to brown ferrierite.
Location: Monte Lake, British Columbia, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ferrilotharmeyerite

Comments: Brown crystalline aggregates of ferrilotharmeyerite on quartz.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrimolybdite

Comments: Greenish-yellow crystalline aggregates of ferrimolybdite on a gossanous matrix.
Location: Quarry No 2, K?nigshain, Oberlausitz, Saxony, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrinatrite

Comments: White spherical aggregates of ferrinatrite with gypsum needles.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrinatrite   Rozenite   Copiapite

Comments: White powdery rozenite coating with yellow ferrinatrite on purple copiapite.
Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferripyrophyllite

Comments: Brown crystal prism of ferripyrophyllite in earthy matrix.
Location: Talagai, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrisicklerite

Comments: Dark brown massive ferrisicklerite.
Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferristrunzite

Comments: Radiating yellow crystals of ferristrunzite on black matrix.
Location: Blaton, Hainaut (Henegouwen; Hennegau) Province, Belgium. Scale: 35x25x15 mm.
© John Betts - Fine Minerals

Ferrisurite

Comments: Olive-green crystalline ferrisurite, with radiating structure.
Location: Shirley Ann Claim, near Darwin, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferritaramite   Potassic-ferritaramite

Comments: Lightly to moderately etched, blocky, jet black ferritaramite (potassic-ferritaramite is a not approved mineral name).
Location: Niaslo, Basha Valley, Baltistan, Pakistan. Scale: 5 x 1.5 x 0.3 cm.
© John Veevaert

Ferritungstite

Comments: Small, yellow crystals of ferritungstite on matrix.
Location: Clara Mine, Oberwolfach, Wolfach Valley, Black Forest, Baden-W?rttemberg, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferro-actinolite

Comments: Prismatic crystals of ferro-actinolite showing terminal crystal faces..
Location: Astor, Shigar Valley Pakistan. Scale: 4.5 x 3.3 x 4.2 cm.
© Fabre Minerals

Ferroalluaudite

Comments: Dark green crystalline ferro alluaudite in pegmatite.
Location: Chandler Mills Mine, Newport, Sullivan County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferroaxinite

Comments: Doubly terminated ferroaxinite crystal with good luster and form.
Location: Puyva, Polar Ural, Russia. Scale: 3x5x2 cm.
© Fabre Minerals

Ferrobustamite

Comments: Grayish crystalline ferrobustamite with white calcite, golden colored phlogopite and green actinolite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrocarpholite

Comments: Pale yellow radiating ferrocarpholite crystals.
Location: Krasno, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferroceladonite

Comments: Micaceous ferro celadonite, comprising schistose rock.
Location: Mikhailovsky Mine, Malkhan Range, Central Transbaikalia, Chita District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrocolumbite   Microcline

Comments: Blocky, dark brown ferrocolumbite on pale greenish blue amazonite (microcline).
Location: Crystal Park, El Paso Co., Colorado, USA. Scale: 2.5 x 1.5 cm.
© Fabre Minerals

Ferrocolumbite   Baotite

Comments: Minute brown crystalline grains of baotite in dark ferrocolumbite.
Location: Sheep Creek, Ravalli County, Montana. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrocolumbite   Plumbopyrochlore

Comments: Brown plumbopyrochlore crystal with dark brown ferrocolumbite.
Location: Holdazan, Buregteg, Mongolia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrohexahydrite

Comments: White to light brownish crust of ferrohexahydrite on matrix.
Location: Sohland, Bautzen, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrohogbomite-2N2S

Comments: Photomicrograph of euhedral ferrohogbomite-2N2S grains (Hog) in magnetite (Mgt). (MinMag, v 67, p 1084).
Location: Eastern Ghats belt, Andhra Pradesh, India. Scale: See Image.
© Mineralogical Magazine

Ferroholmquistite

Comments: Dark green ferroholmquistite, with silvery luster, prismatic crystalline ferroholmquistite in cesium rich reddish brown biotite.
Location: Goltsy, Eastern Sayan Mountains, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrohornblende   Hornblende

Comments: Dark gray prismatic crystal of ferrohornblende in a white feldspar matrix.
Location: Monte Somma (Vesuvius), Campania, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ferrokentbrooksite

Comments: A crystal of red ferrokentbrooksite in matrix.
Location: Mont Saint-Hilaire, Quebec. Scale: Crystal size 1.5 mm.
© L?szl? Horv?th

Ferrokesterite   Andorite

Comments: Small, tetragonal crystal of gray ferrokesterite (circled in thumbnail) attached on the surface of a larger striated andorite specimen.
Location: San Jose mine, Oruro, Bolivia. Scale: Crystal size 0.2 mm.
© John Veevaert

Ferrolaueite

Comments: Pale tan microcrystal aggregates of ferro laueite on quartz.
Location: My Creek, Burlington County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferropargasite

Comments: Dark to medium green crystalline granular ferropargasite.
Location: Ginevro Mine, Elba, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferropyrosmalite

Comments: Crystal of ferropyrosmalite on clinochlore schist.
Location: Normark, Wermland, Sweden. Scale: Crystal size 1 cm.
© John Veevaert

Ferrorichterite

Comments: Brownish-yellow fibrous ferrorichterite on matrix.
Location: Brunsheon, Gruvan, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrosilite

Comments: Transparent, brown prismatic blades of ferrosilite crystals on matrix.
Location: Summit Rock, Diamond Lake, Douglas County, Oregon, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ferrostrunzite

Comments: Yellowish acicular crystals of ferrostrunzite.
Location: Gravel Hill mine, Perranzabuloe, Cornwall, England, UK. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrotantalite

Comments: Rounded black crystal of ferrotantalite.
Location: Mount Surprise, Queensland, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrotantalite

Comments: Blocky, crystalline aggregate of ferrotantalite crystals weighing over one kilogram.
Location: Ecuador, Minas Gerais, Brazil. Scale: 10 x 6 x 5 cm.
© Rob Lavinsky

Ferrotapiolite

Comments: Twinned, brown, dipyramid crystal of ferrotapiolite.
Location: Sapucaia district, Galileia, Minas Gerais, Brazil. Scale: 4.2x3.1x3.1 cm.
© Richard Dale / Dale Minerals

Ferrotapiolite

Comments: Ferrotapiolite crystal in white quartz and mica matrix.
Location: Quixab? Mine, Frei Martinho, Para?ba Brazil. Scale: Crystal size 1 x 0.8 cm.
© Fabre Minerals

Ferrotschermakite

Comments: Medium green crystalline massive ferrotschermakite with yellow-brown massive andradite.
Location: Old Tip Quarry, Dookie Mineralogical Reserve, Dookie, Victoria, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrotychite

Comments: Yellow crystalline granular ferrotychite in white analcime (drill core).
Location: Olenii Ruchei, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrowinchite

Comments: Dark green divergent fibrous ferrowinchite.
Location: Harstigen, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrowodginite

Comments: Dark brown massive ferrowodginite.
Location: Nyanga Number 2 Pegmatite, Ankole, Uganda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrowyllieite

Comments: Deep greenish black massive ferrowyllieite with brown to white quartz.
Location: Victory Mine, near Custer, Custer County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferruccite   Avogadrite

Comments: Very small, white crystals of ferrite on massive, yellowish avogadrite.
Location: Vesuvius, Naples, Naples province, Campania, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Fersmanite

Comments: Large single crystal of brown fersmanite in quartz matrix.
Location: Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: 4x3x2 cm.
© John Betts - Fine Minerals

Fersmite

Comments: Brown prismatic crystal of fersmite in matrix.
Location: Alpe Rosso, Vigezzo valley, Novara, Piedmont, Italy. Scale: Picture size 1.7 mm.
© Thomas Witzke / Abraxas-Verlag

Fervanite   Hewettite

Comments: Spherical aggregate of acicular microcrystals of fervanite with blocky hewettite.
Location: Gold Quarry Mine, Carlin Trend, Eureka County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fetiasite

Comments: Sub metallic grayish black crystals of fetiasite on matrix.
Location: Gorb, Binntal, Wallis (Valais), Switzerland. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Fettelite

Comments: Deep scarlet red crystals of fettelite.
Location: Glasberg Quarry, Nieder-Beerbach, Odenwald, Hesse, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Fianelite

Comments: Small reddish-brown inclusions of fianelite in matrix.
Location: Fianel Mine, Val Ferrera, Grischun (Grisons; Graub?nden), Switzerland. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Fibroferrite

Comments: Tan-white, acicular crystals of fibroferrite on matrix.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Fichtelite

Comments: Colorless crystals of fichtelite on fossil wood.
Location: Marktredwitz, Fichtelgebirge, Bavaria, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Fiedlerite

Comments: Clear tabular crystals of fiedlerite on matrix.
Location: Laurium, Greece. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Filipstadite   Hausmannite

Comments: Dark minute grains of filipstadtite in hausmannite (slabbed specimen).
Location: Jacobsberg Mine, near Nordmark, Filipstad, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Finnemanite

Comments: Black, prismatic, twinned crystal of finnemanite.
Location: L?ngban, Filipstad, V?rmland, Sweden. Scale: Crystal length 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Fizelyite

Comments: Galena and sphalerite with minor chalcopyrite and a heavy druse of acicular fizelyite crystals.
Location: Herja, Kisbanya, Transylvania, Romania. Scale: Crystal size 3 mm.
© John Veevaert

Flagstaffite

Comments: Colorless transparent microcrystal fragment of flagstaffite.
Location: San Francisco Mountains, near Flagstaff, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fleischerite

Comments: Pale pink transparent acicular crystals of fleischerite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Florencite-(Ce)

Comments: Butterscotch colored florencite-(Ce) on a quartz crystal.
Location: Brumado, Bahia, Brazil. Scale: Crystal size 4 mm.
© John Veevaert

Florencite-(La)

Comments: Green, acicular crystalline aggregates of florencite-(La).
Location: Igarap? Bahia Mine, Caraj?s ridge, Par?, North Region, Brazil. Scale: Picture size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Florenskyite

Comments: Backscattered electron image of the serpentine mass containing bright florenskyite grains (arrow). (AmMin, 85:1083).
Location: Kaidun chondritic meteorite, which fell in South Yemen in 1980. Scale: See Image.
© American Mineralogist

Fluckite

Comments: White to pale pink crystalline translucent botryoids of fluckite.
Location: Giftgrube, Sainte-Marie-aux-Mines, Alsace, Haute-Rhin, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluellite

Comments: Tabular, transparent, pseudohexagonal crystals of fluellite.
Location: Tom's quarry, Kapunda, South Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Fluellite   Bariosincosite

Comments: Vivid green crystals of bariosincosite well placed on a matrix covered by colorless, tabular fluellite with some minor metavariscite.
Location: Eugui Quarry, Cantera Azkarate, Eugui, Navarra, Spain. Scale: Rosette size: 0.3 x 0.2 cm.
© Fabre Minerals

Fluoborite

Comments: Silky fibrous fluoborite with purple fluorite.
Location: Ludlaw, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluorapatite   Beryl   Muscovite   Apatite

Comments: Pink crystals of fluorapatite with pale blue beryl (aquamarine) on books of muscovite crystals.
Location: Nagar area, Gilgit district, Northern Areas, Pakistan. Scale: 3 x 3 cm.
© Dan Weinrich

Fluorapatite   Quartz

Comments: Purple crystal of fluorapatite on slightly smoky quartz crystals. Former Dr. E.E. David and Houston Museum collections.
Location: Pech, Kunar Province, Nuristan, Afghanistan. Scale: Crystal size 3.0 x 2.1 x 1.7 cm.
© Ed Rosenzweig

Fluorapatite   Gatumbaite

Comments: White crystalline gatumbaite with yellow brazilianite in massive blue fluorapatite.
Location: Buranga Pegmatite, near Gatumba, Gisenyi, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluorapophyllite   Stilbite   Apophyllite

Comments: Doubly terminated, very clear and perfect fluorapophyllite with white stilbite.
Location: Jalgaon, India. Scale: 4 x 3.5 cm.
© Fabre Minerals

Fluorbritholite-(Ce)

Comments: Amorphous (metamict) grain of fluorbritholite-(Ce) on matrix.
Location: Norra Karr, Grena, Jonkoping, Sweden. Scale: Crystal size 1 cm.
© John Veevaert

Fluorcaphite

Comments: Massive, coarsely crystalline, pale yellowish fluorcaphite.
Location: Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Fluorellestadite

Comments: Blue-green granular fluorellestadite in calcium rich rock matrix.
Location: Kopeisk, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluorite

Comments: Cubic fluorite crystals with octahedral galena crystals. The largest crystal is 2.1 cm across. Note the exceptional fluorescence of these crystals.
Location: Rogerley Mine, in Weardale, England. Scale: 7.8 x 5.5.
© John Veevaert

Fluorite   Creedite

Comments: Well-developed, prismatic, reddish creedite crystals on green fluorite.
Location: Mina Navidad, Rodeo, Durango, Mexico. Scale: 9 x 5 x 5.3 cm.
© Fabre Minerals

Fluorite

Comments: Red-orange octahedral fluorite crystals on an albite matrix with well defined edges and faces.
Location: Pointe Kurz (3600 m altitude), Mont Blanc Massif, Haute-Savoie, France. Scale: Crystal size is 2.1 x 1.5 cm.
© Fabre Minerals

Fluoro-edenite

Comments: Two, tabular crystals of fluoro-edenite on matrix.
Location: Mt. Calvario, (Mt. Etna Volcano), Biancavilla, Catania Province, Sicily, Italy. Scale: Picture size 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Fluoro-sodic-pedrizite   Clinoholmquistite   Magnesioclinoholmquistite

Comments: Dark blue fibrous clinoholmquistite with radiating structure, variety magnesioclinoholmquistite. Clinoholmsquitite may be a new aphibole, fluoro-sodic-pedrizite..
Location: Near Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluorocannilloite

Comments: Greenish, prismatic crystals of fluorocannilloite in matrix.
Location: Yuang Yang Province, Yunnan, China. Scale: Picture size 6 cm.
© Dave Barthelmy

Fluororichterite

Comments: Doubly-terminated, stubby, black fluororichterite crystal.
Location: Wilberforce, Monmouth Township, Haliburton Co., Ontario, Canada. Scale: 22x21x15 mm.
© John Betts - Fine Minerals

Fluorvesuvianite

Comments: Acicular crystals of fluorvesuvianite in a clear, calcite matrix. (CanMin, v 41, p 1375).
Location: Lupikko iron mine, Pitkaranta, Karelia, Russia. Scale: Picture size 1.2 cm.
© Canadian Mineralogist

Foggite

Comments: Bright yellow, rounded crystalline aggregates of foggite on matrix.
Location: Palermo #1 mine, North Groton, Crafton County, New Hampshire, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Foitite

Comments: Dark greenish-black termination of foitite on pinkish elbaite.
Location: Dobra Voda, Moravia, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Foordite

Comments: Brownish massive foordite.
Location: Manono, Shaba (Katanga), Congo (Za?re). Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Fornacite

Comments: Dark, prismatic crystals of fornacite on matrix.
Location: El Khun mine, Anarak, Iran. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Fornacite

Comments: Emerald green platy crystals to 0.75mm on a pink to white, siliceous matrix.
Location: Lone Star mine, Copperopolis, Yavapai County, Arizona. Scale: Picture size 1.4 cm.
© Tom Loomis / Dakota Matrix

Forsterite   Olivine

Comments: Peridot (Forsterite) recrystallized at the base.
Location: Skardu, Nooristan, Pakistan. Scale: 2.5 x 2.7 cm.
© Fabre Minerals

Foshagite

Comments: Tan to gray fibrous to columnar aggregate of foshagite.
Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Foshallasite

Comments: Pearly translucent white somewhat fibrous aggregate of foshallasite.
Location: Mount Yukspor, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fourmarierite

Comments: Thick tabular orange crystals of fourmarierite.
Location: Shinkolobwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Fraipontite   Zaccagnaite

Comments: Scanning electron microscope image of hexagonal, tapering, prismatic zaccagnaite crystals, covered by a thin crust of fraipontite. (AmMin 86:1294).
Location: Marble quarries of the Carrara basin (Apuan Alps, Italy). Scale: See Image.
© American Mineralogist

Francevillite   Chervetite

Comments: Bottle brown tabular crystals of chervetite on yellow francevilleite.
Location: Mounana, Haut-Ogoue, Gabon. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Francevillite   Curienite

Comments: Intense yellow curienite and orange francevillite.
Location: Mouonana, Haut-Ogoue, Gabon. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Francevillite

Comments: Specimen of orange francevillite with minor yellow curienite.
Location: Mouana Mine, Gabon. Scale: Crystal size 4 mm.
© John Veevaert

Francevillite   Mounanaite

Comments: Stout, yellow, transparent, prismatic, striated crystals of francevillite on brownish red mounanaite matrix.
Location: Mounana mine, Franceville, Haut-Ogoou?, Gabon. Scale: Picture size 1.5 cm.
© Paul M. Schumacher

Franciscanite-III

Comments: Dark reddish brown large franciscanite grains to 1.5cm in tan-colored gageite matrix.
Location: Pennsylvania mine, Santa Clara Co., California, USA. Scale: 5.5 x 4 x 3cm.
© Tom Loomis / Dakota Matrix