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FAUSTITE - Maggie Creek District, Eureka County, Nevada                                   
FAYALITE – Coso Hot Springs, Inyo County, California
FAYALITE – Cougar Butte, Modoc County, California
FAYALITE – Kajia-Kanagawa Ken, Honshu, Japan
FAYALITE – Kajia-Kanagawa Ken, Honshu, Japan
FAYALITE Var. Manganfayalite (Knebelite) - Dannemora, Uppland, Sweden                                                  
FEDORITE - Chara River Area, Murun Massif, N.W. Aldan, Siberia, Russia                
FENAKSITE - Mt. Rasvumchorr, Khibiny Massif, Kola Peninsula, Russia
FENCOOPERITE – Trumbull Peak, Mariposa County, California  T
FERGUSONITE-(Y) – Auswurflinge, Laacher See Region, Bellerberg, Eifel District, Rheinland-Pfalz, Germany
FERGUSONITE-(Y) - Oregon #3 Mine, South Platte, Jefferson County, Colorado
FERGUSONITE-(Y) – Ytterby, Sweden – See TENGERITE-(Y)
FERRARISITE - GruBe Gift (Gift Mine), Saint Marie-Aux-Mines, Alsace, France  T
FERRIERITE – Kamloops Lake, British Columbia, Canada
FERRIERITE – Monte Lake, British Columbia, Canada
FERRIMOLYBDITE - Little Cottonwood Canyon, near Alta, Salt Lake County, Utah  D          
FERRISICKLERITE – Palermo Quarry, North Groton, Grafton County, New Hampshire
FERRISURITE – Shirley Ann Claim, Death Valley National Monument, Inyo County, California
FERROCOLUMBITE  - Great Divide Quarry, Topsham, Sagadahoc County, Maine
FERROCOLUMBITE – Etta Mine, near Keystone, Pennington County, South Dakota
FERROCOLUMBITE – Golconda, State of Minas Gerais, Brazil
FERROCOLUMBITE – Virgem de Lapa Pegmatite, State of Minas Gerais, Brazil
FERROKESTERITE - Cligga Mine, Perranzabuloe, Cornwall, England  D, T
FERROPYROSMALITE - Monchi Mine, Burguillos del Cerro, Badajoz Province, Spain
FERROSELITE - A.E.C. Mine #8, Temple Mountain, Emery County, Utah
FERROSILITE - NE1GC Stop #9, Route 16 Road Cut, Little Squaw, Maine 
FERROTANTALITE – Big Boulder Pegmatite, Crystal Mountain District, Larimer County, Colorado                    
FERROWYLLIEITE - Victory Mine, Custer County, South Dakota                               
FERSMITE - Dark Star Claim, Bitterroot Base Line, Ravalli County, Montana                
FLUELLITE - Tom's Phosphate Quarry, near Kapunda, S.A., Australia                        
FLUOBORITE - Palabora Open Pit, Phalaborwa, Transvaal, Republic of South Africa           
FLUORAPATITE (Arsenical) - Sitipar, Chindwara District, Central Provinces, India         
FLUORAPATITE Var. Carbonatian - Levant Mine, St. Just, Cornwall, England  D              
FLUORAPATITE Var. Mangan-Fluorapatite - Strickland Quarry, Portland, Connecticut         
FLUORELLESTADITE (Wilkeite) - Crestmore Quarry, near Riverside, Riverside County, California
FLUORITE Var. Yttrofluorite - Hundholmen, Tysfjord, Northern Norway D, T                 
FORNACITE – Chah Khuni Mine, near Anarak, Iran
FORNACITE - Shattuck Shaft, Bisbee, Cochise County, Arizona
FORNACITE – Vekol Mine, Pinal County, Arizona
FORSTERITE – Jacupiranga Mine, Sao Paulo State, Brazil
FORSTERITE - Sigurdfjelet Volcano, Svalbard, Spitzbergen Island, off the coast of Norway
FORSTERITE (= Olivine, or Peridot)  - La Cuerva Volcano, Le Geria, Tias, Lanzarotte, Canary Islands
FORSTERITE (= Olivine, or Peridot) – Dreisler Weiher Daun, Eifel District, Rhineland, Germany
FOSHAGITE - Crestmore Quarry, near Riverside, Riverside County, California                               
FRAIPONTITE (Cuprian) - Defiance-Silver Bill Mines, Gleeson, Cochise County, Arizona     
FRANCEVILLITE - Mounana Mine, Haut-Ogoue Province, Gabon  T                              
FRANCISCANITE - Pennsylvania Mine, Santa Clara County, California  T                     
FRANCKEITE - "D" Vein, 220 Level, San Jose Mine, Dept. of Oruro, Bolivia  D              
FRANCKEITE - Kalkar Quarry, Santa Cruz County, California
FRANCONITE – Francon Quarry, Mont St. Hilaire, Rouville County, Ontario, Canada  D, T
FREIBERGITE - Sweet Home Mine, Alma, Park County, Colorado
FREIBERGITE – Zaca Mine, Monitor-Mogul Mining District, Alpine County, California
FRESNOITE - Esquire #7 Mine, Big Creek, Fresno County, California  T
FRESNOITE – Junnila Mine, New Idria District, Southern San Benito County, California
FRESNOITE - Victor Mine, Clear Creek District, San Benito County, California                                   
FRIEDELITE - Franklin, Sussex County, New Jersey
FRIEDELITE – N'Chwaning II Mine, Kuruman District, Northern Cape Province, Rep. of South Africa
FRIEDRICHITE – Vysna Boca, Slovakia
FRONDELITE - Sapucaia Pegmatite, Conselheiro Pena, Minas Gerais, Brazil  D, T            
FRONDELITE - Tip Top Mine, Custer County, South Dakota                                   
FULOPPITE - West Swine Gill, Caldbeck Fells, Cumberland, England                         

SELECT ALPHABETICAL LISTINGS OF RARE MINERALS HERE!