CALAVERITE – Cresson Mine, Cripple Creek, Teller County, Colorado
CALCIOFERRITE - "Klemm's" Moculta Phosphate Quarry, near Angaston, S.A., Australia         
CALCIOVOLBORTHITE - Monument Valley, Garnet Ridge, Apache County, Arizona – See Tangeite
CALCIOVOLBORTHITE - Richardson, Grand County, Utah – See TANGEITE                                      
CALCIOVOLBORTHITE - Ridenour Mine, Grand Canyon, Coconino County, Arizona – See Tangeite
CALDERONITE - Las Colmenitas Mine, Santa Marta, Badajoz, Extremadura, Spain  T
CALEDONITE – Hard Luck Claim, near Baker, San Bernardino Co., California
CALEDONITE - Mammoth-St. Anthony Mine, Tiger, Pinal County, Arizona  (micros only)                      
CALLAGHANITE - Gabbs Basic Refractories Mine, Gabbs, Nye County, Nevada  D, T                 
CALOMEL - Cahill Mine, Poverty Peak District, Humboldt County, Nevada                                             
CALOMEL – Clear Creek Claim, Southern San Benito County, California
CALOMEL - Emerald Lake District, Redwood City, San Mateo County, California                
CALOMEL - Mariposa Mine, Terlingua, Brewster County, Texas  D
CALOMEL – Perry Pit, Terlingua, Brewster County, Texas
CALOMEL - Red Bird Mercury Mine, E. of Lovelock, Pershing County, Nevada
CAMEROLAITE – Piesky Mine, Spania Dolina, Slovakia
CANASITE - Chara River Area, Murun Massif, N.W. Aldan, Siberia, Russia  D                 
CANAVESITE - Galleria Valagera, Cantiere Salvere, Miniera di Brosso, Ivrea, Italy  D, T       
CANCRINITE – Saga Quarry, Tvedalen, Norway
CANCRINITE-VISHNEVITE - Loch Borrolan, Rosshire, Scotland                                  
CARACOLITE – Challacollo Mine, Iquique, Chile
CARBONATE –FLUORAPATITE – Manhattan, Nye County, Nevada
CARBONATE-CYANOTRICHITE - Engels Mine, Copper Canyon, Plumas County, California            
CARBONATE-FLUORAPATITE – Levant Mine, St. Just, Cornwall, England
CARBONATE-FLUORAPATITE – Little Green Monster Mine, Fairfield, Utah County, Utah
CARBONATE-FLUORAPATITE – Little Green Monster Mine, Fairfield, Utah County, Utah
CARBONATE-FLUORAPATITE (Tavistockite) – Holmbush Mine, Callington, Cornwall, England
CARBONATE-FLUORAPATITE (Holmbushite) – Holmbush Mine, Callington, Cornwall, England
CARBONATE-HYDROXYLAPATITE – Linopolis District, Minas Gerais, Brazil
CARBONATE-HYDROXYLAPATITE - near Cody, Beartooth Mountains, Wyoming                        
CARBONATE-HYDROXYLAPATITE – Tip Top Mine, Custer County, South Dakota
CARBONATE-HYDROXYLAPATITE Var. Dahllite – near Cody, Beartooth Mts., Wyoming
CARLETONITE - Poudrette Quarry, Mont St. Hilaire, Rouville County, Quebec, Canada  D, T                                          
CARLFRIESITE – Bambollita Mine, Moctezuma District, Sonora, Mexico
CARLOSTURANITE - Auriol Mine, Sempeyre, Varaita Valley, Cuneo Province, Piedmont, Italy  T
CARMINITE - Gold Hill, Tooele County, Utah                                                 
CARMINITE – Kintore Opencut, Broken Hill, N.S.W., Australia
CARMINITE - Las Animas Mine, State of Sonora, Mexico                                       
CARMINITE - Mina Ojuela, Mapimi, Durango, Mexico
CARMINITE - Santa Ana, State of Sonora, Mexico                                                      
CARNALLITE – Hildesia/Diekholzen Mine, Hannover, Germany
CARNOTITE – Blue Jay Mine, San Juan County, Utah
CARNOTITE – Jo Dandy Hill Area, Paradox Valley, Montrose County, Colorado
CARNOTITE – Mashamba West Mine, near Kolwezi, Shaba Province, Zaire
CARNOTITE – Monument #2 Mine, Monument Valley, Apache County, Arizona
CARNOTITE – Rattlesnake Mine, Big Indian Wash, San Juan County, Utah
CARNOTITE (on petrified wood) - Santa Maria River District, Yavapai County, Arizona
CARNOTITE (replacing wood) – Continental Uranium Mine, Powder River Basin, Wyoming
CARPHOLITE - Biesenrode, Harz Mountains, Germany  D                                        
CARPHOLITE - Horn Slavhov (Schlaggenwald), Krasno, Bohemia, Czechoslovakia D, T                
CARROLLITE - Kamoto Pit, Kolwezi, Shaba Province, Zaire
CASSITERITE Var. Varlamoffite - Hingston Quarry, near Callington, Cornwall, England
CATAPLEIITE - Mt. Aikuaiventchorr, near Kirovsk, Khibiny Massif, Kola Peninsula, Russia  
CATTIERITE - Nordmine, Finnshyttan, Nordmark, Sweden
CATTIERITE - Shinkolobwe Mine, Shaba Province, Zaire  T
CAVANSITE - Owyhee Dam, Malheur County, Oregon  T  
CECHITE - Vrancice, near Pribram, Bohemia, Czechoslovakia  T                               
CELSIAN – Benallt Mine, Rhiw, Leyen Peninsula, Caernarvonshire, Wales  D
CELSIAN – Parker Shaft, Franklin, Sussex County, New Jersey
CELSIAN – Trumbull Peak, near Incline, Mariposa County, California
CERITE-(Ce) – Rusty Gold Mine, Jamestown District, Boulder County, Colorado – See BRITHOLITE-(Ce)                              
CERULEITE - Emma Luisa Gold Mine, Huanuco, Taltal Province, Chile                          
CERULEITE - Wheal Gorland, St. Day, Cornwall, England                                      
CERULEITE – Wheal Gorland, St. Day, Cornwall, England
CERUSSITE (Chromian) - Magnet Mine, Dundas, Tasmania, Australia
CERVANTITE - Tom Moore Mine, Erskine Creek Mining District, Kern County, California
CESAROLITE – Sidi Amor Ben Salem, Tunisia  D, T
CETINEITE – Cetine Mine, near Siena, Toscana, Italy  D, T
CHABAZITE-(Na) – Aci Castle, Catania, Sicily, Italy
CHABOURNEITE - Jas Roux, Chabourneou, Htes Alpes, France  T                                
CHALCOALUMITE - Grandview Mine, Grand Canyon National Park, Coconino County, Arizona       
CHALCOALUMITE - Sacramento Mine, Bisbee, Cochise County, Arizona
CHALCOCITE (replacing wood) – Mi Vida Mine, Big Indian District, San Juan County, Utah
CHALCOMENITE - Eagle Claims, Hal Lake, Beaverlodge Lake area, Saskatchewan, Canada  
CHALCOMENITE – El Dragon Mine, Potosi, Bolivia  D
CHALCOPHANITE - "Glory Hole", Gold Hill Mine, Tooele County, Utah
CHALCOPHANITE – Mina Ojuela, Mapimi, Durango, Mexico
CHALCOPHANITE – Mohawk Mine, San Bernardino County, California
CHALCOPHANITE – Sterling Hill Mine, Ogdensburg, Sussex County, New Jersey
CHALCOPHYLLITE - Burrus Mine, Washoe County, Nevada                                        
CHALCOPHYLLITE - Copper Stope, Majuba Hill Mine, Pershing County, Nevada  D                
CHALCOPHYLLITE - El Teniente Mine, Rancagua, Chile  D                                      
CHALCOSIDERITE - Douglas Hill Copper Mine, Yerington District, Lyon County, Nevada
CHALCOSIDERITE – Douglas Hill Copper Mine, Yerington District, Lyon County, Nevada
CHALCOSIDERITE - Lake Boga Granite Quarry, Northwest Victoria, Australia
CHALCOSIDERITE - Wheal Phoenix, Liskeard, Cornwall, England                                
CHALCOSTIBITE – Rar el Anz, Wadi of Cherrat, East of Casablanca, Morocco
CHAMBERSITE - Venice Salt Dome, Plaquemines County, Louisiana   D                                               
CHAMOSITE – Bonita, San Diego County, California
CHAPMANITE – Mine de la Bessade, Massiac, Haute Loire, France
CHAROITE - Chara River Area, Murun Massif, N.W. Aldan, Siberia, Russia T                 
CHENEVIXITE - Chuquicamata, Antofagasta Province, Chile  D                                 
CHENEVIXITE - Copper Stope, Majuba Hill, Pershing County, Nevada                           
CHENEVIXITE - Gold Hill (U.S.) Mine, Gold Hill, Tooele County, Utah
CHENEVIXITE - Wheal Gorland, St. Day, Cornwall, England                                    
CHERALITE-(Ce) – Thabayadiotsa Hill, NE of Rustenburg, Transvaal, Republic of So. Africa
CHEVKINITE-(Ce) - Mtn. Drive, Bethlehem, Northampton County, Pennsylvania
CHIAVENNITE - Heia Quarry, Tvedalen, Larvik, Langesundsfjord Area, Southern Norway
CHIBINSKITE - Khibiny Massif, Kola Peninsula, Russia
CHILDRENITE – Crinnis Mine, St. Austell, Cornwall, England
CHILDRENITE – Drakewalls Mine, Gunnislake, Cornwall, England
CHILDRENITE - George & Charlotte Mine, Tavistock, Devonshire, England  D, T                
CHILDRENITE – Joao Modesto dos Santos Mine, NW of Linopolis, Minas Gerais, Brazil
CHILDRENITE – Prince of Wales Mine, Calstock, Cornwall, England
CHIOLITE - Ivigtut, Arsuk Fjord, Southwest Greenland  
CHKALOVITE - Mt. Karnasurt, Lovozero Massif, Kola Peninsula, Russia                    
CHLOANTHITE - Niederschlema, Saxony, Germany
CHLORAPATITE – Sannidal, near Kragero, Telemark, Norway
CHLORARGYRITE – Bullfrog Mine, Rhyolite District, Nye County, Nevada
CHLORARGYRITE – Horn Silver Mine, near Frisco, Beaver County, Utah
CHLORARGYRITE – Las Herrerias, Almeria, Spain
CHLORARGYRITE - Minietta Mine, Argus Range, Inyo County, California                        
CHLORARGYRITE - South Wall, South Pit, Gold Hill, Tooele County, Utah
CHLORARGYRITE - Tin Stope, Majuba Hill, Pershing County, Nevada                            
CHLORARGYRITE – Wade Hampton Mine, Caribou District, Boulder County, Colorado
CHLORARGYRITE (Bromian) - Blue Bell Mine, San Bernardino County, California                
CHLORARGYRITE (Bromian) (= Iodembolite) – Proprietary Mine, Broken Hill, N.S.W., Australia
CHLORELLESTADITE - Crestmore Quarry, Riverside County, California                          
CHLORITE Var. "Strigovite" - Streigau (Strezgom), Wojew. Wroclaw, Silesia, Poland  D       
CHLOROPHOENICITE - Sterling Hill Mine, Ogdensburg, Sussex County, New Jersey
CHONDRODITE – Crestmore Quarry, near Riverside, Riverside County, California
CHONDRODITE – Sparta, Sussex County, New Jersey  D
CHROMRUTILE – Red Ledge Mine, Washington District, Nevada County, California – See REDLEDGITE D, T
CHURCHITE-(Y) – Auerbach, Oberpfalz, Bavaria, Germany
CHURCHITE-(Y) – Mt. Ploskaja, West Keivy, Kola Peninsula, Russia
CHURCHITE-(Y) (WEINSCHENKITE) - 1/2 Mile So. of Sausalito, Marin County, California        
CHURCHITE-(Y) (WEINSCHENKITE) - Garies, Cape Province, Republic of South Africa            
CHURCHITE-(Y) (WEINSCHENKITE) – Indian Mountain, Cherokee County, Alabama  D
CHURCHITE-(Y) (WEINSCHENKITE) - South River Mine, Rockbridge County, Virginia              
CINNABAR – Culver-Baer Mine, Sonoma County, California
CINNABAR – Guadalupe Mine, Santa Clara County, California
CINNABAR – New Idria Mine, Southern San Benito County, California
CLARAITE – GruBe Clara, Oberwolfach, Schwarzwald, Baden, Germany  D, T
CLAUSTHALITE - Slavkovice, Central Moravia, Czech. Republic
CLINOBISVANITE - Londonderry Feldspar Quarry, 12 Mi. So. of Coolgardie, W.A., Australia  
CLINOCHALCOMENITE - El Dragon Mine, Potosi, Bolivia
CLINOCHLORE – Southern San Benito County, California
CLINOCHLORE (CHROMIAN) (KAMMERERITE) – Kop Krom Mine, Kop Daglari, Erzerum Province, Turkey
CLINOCHLORE (Chromian) (Kammererite) – Mistake Mine, Fresno County, California
CLINOCHLORE (CHROMIAN) (KAMMERERITE) - Red Ledge Mine, Nevada County, California
CLINOCHRYSOTILE - Sterling Hill Mine, Ogdensburg, Sussex County, New Jersey                 
CLINOCLASE – 150 Level, Gold Hill Mine, Tooele County, Utah
CLINOCLASE - Copper Stope, Majuba Hill, Pershing County, Nevada                            
CLINOCLASE - Tin Stope, Majuba Hill, Pershing County, Nevada                               
CLINOCLASE - Wheal Gorland, St. Day, Cornwall, England                                     
CLINOHEDRITE – Franklin, Sussex County, New Jersey
CLINOHUMITE – Crestmore Quarry, Riverside County, California
CLINOHUMITE (Ti-Clinohumite) – Jacupiranga Mine, Sao Paulo State, Brazil
CLINOSAFFLORITE – Arhbar Mine, Bou Azzer, Anti Atlas Mountains, Morocco
CLINOSAFFLORITE – Nordmine, Finnshyttan, Nordmark, Sweden
CLINOTYROLITE - Lovelock Mine, Bolivia, Cottonwood Canyon, Churchill County, Nevada                                    
CLINTONITE Var. Xanthophyllite – Crestmore Quarry, near Riverside, Riverside County, California  D
CLINTONITE Var. Xanthophyllite – Mt. Lake Mine, near Brighton, Utah
COALINGITE - Union Carbide Pit, Southern San Benito County, California  T                  
COBALTAUSTINITE - Dome Rock Copper Mine, Olary Province, S.A., Australia                   
COBALTITE - Marrgruvan Mine, Hakansboda, Vastmanland, Sweden  D                            
COBALTITE - Pnerd Claim, Bonnett Plume River, Yukon Territory, Canada                      
COBALTITE – Sara Alicia Mine, San Bernardo, Alamos, Sonora, Mexico
COBALTOMENITE - A.E.C. Mine #8, Temple Mountain, Emery County, Utah                        
COBALTOMENITE - El Dragon Mine, Potosi, Bolivia
COESITE - Dora-Maira Massif, Parigi, near Martiniana Po, Piedmont, Italy
COESITE - Meteor Crater, Coconino County, Arizona  T                                       
COFFINITE – Allen #2 Mine, Red Canyon District, San Juan County, Utah
COFFINITE – La Sal No. 2 Mine, Beaver Mesa, Mesa County, Colorado
COFFINITE - Skrdlovice, West-Central Moravia, Czech. Republic - See URANINITE
COFFINITE - Temple Mountain Consolidated Mine, Emery County, Utah                          
COLLINSITE - Big Fish River-Rapid Creek Area, Yukon Territory, Canada (xls.)               
COLLINSITE – Kamloops Lake, British Columbia, Canada
COLLINSITE – Lavra de Ilha, Rio Jequitinhonha, Taquaral, Minas Gerais, Brazil  D
COLLINSITE - Reaphook Hill, near Blinman, S.A., Australia                                  
COLLOPHANE - near Drummond, Powell County, Montana – See Hydroxylapatite
COLORADOITE - Gold Hill District, Boulder County, Colorado
COLUSITE - Colusa Mine, Butte, Silver Bow County, Montana  D, T  
COMANCHEITE – Mariposa Mine, Terlingua Mining District, Brewster County, Texas  D
COMPREIGNACITE – Lookout #22 Claim, Marshall Pass, Saguache County, Colorado
CONNELLITE - "Spangolite Pillar", Main Level, Majuba Hill, Pershing County, Nevada
CONNELLITE - 150' Level, Gold Hill Mine, Gold Hill, Tooele County, Utah                    
CONNELLITE - Fontana Rossa, Agonisha, Corsica Island (Mediterranean Sea)                   
CONNELLITE – Levant Mine, Pendeen, St. Just, Cornwall, England
CONNELLITE – Pole Star Copper Company Mine, Gold Hill District, Tooele County, Utah
CONNELLITE - Southwest Mine, Bisbee, Cochise County, Arizona  D                            
CONNELLITE - Trawnamoe Mine, Bunmahon, County Waterford, So. Ireland
CONNELLITE - Wheal Edward, Cornwall, England                                               
COOPERITE – Bushveld Complex, Rustenburg, Transvaal, Republic of South Africa
COQUIMBITE - Dexter #7 Mine, San Rafael Swell, Utah                                        
CORKITE - Horn Silver Mine, Frisco, Beaver County, Utah                                    
CORNETITE - Empire-Nevada Mine, Yerington, Lyon County, Nevada                             
CORNETITE - L'Etoile du Congo Mine, near Elizabethville, Shaba Prov., Zaire  D, T          
CORNUBITE - Copper Stope, Majuba Hill, Pershing County, Nevada
CORNUBITE - Humboldt Mine, Patagonia, Santa Cruz County, Arizona                           
CORNUBITE - Tin Stope, Majuba Hill Mine, Pershing County, Nevada                           
CORNWALLITE - Burrus Mine, Washoe County, Nevada                                           
CORNWALLITE - Copper Stope, Majuba Hill, Pershing County, Nevada                           
CORNWALLITE - Middle Pit, Gold Hill Mine, Gold Hill, Tooele County, Utah                   
CORNWALLITE - Tin Stope, Majuba Hill Mine, Pershing County, Nevada                         
CORONADITE - Tsumeb, Namibia                                                     
CORONADITE – Upper Level, Mt. Bonnie Mine, Grove Hill, Northern Territory, Australia
CORRENSITE – Bolet, Vasterbotten, Sweden
CORUNDUM pseudo after SPINEL - Bathurst Township, Lanark County, Ontario, Canada  D        
CORVUSITE – Monument No. 2 Mine, Monument Valley, Apache County, Arizona
CORVUSITE - Paradox Valley, Montrose County, Colorado                                      
CORVUSITE – Temple Mountain, Emery County, Utah
COULSONITE - Buena Vista Hills, 20 Miles SE of Lovelock, Churchill County, Nevada          
COVELLITE – Sierra de Famatina, La Rioja Province, Argentina  D
COWLESITE - Burnt Cabin Creek, Spray, Wheeler County, Oregon                               
COWLESITE - Cape Schanck, Victoria, Australia                                              
COWLESITE - Dunseverick, County Antrim, Northern Ireland                                   
COWLESITE – Middle Fork of the John Day River, E. of Ritter, Grant County, Oregon
COWLESITE - Neer Road, North of Goble, Columbia County, Oregon  T                                              
CRANDALLITE – Lavra da Ilha Pegmatite, Rio Jequitinhonha, Taquaral, Minas Gerais, Brazil
CRANDALLITE - Little Green Monster Mine, Fairfield, Utah County, Utah
CRANDALLITE - Little Green Monster Mine, Fairfield, Utah County, Utah
CREASEYITE - Mammoth-St. Anthony Mine, Tiger, Pinal County, Arizona  T                     
CREDNERITE – Merehead Quarry, Mendip Hills, Somerset, England
CREEDITE – Mina Navidad, Rodeo, Durango, Mexico
CREEDITE - Nevada Moly Mine, near Tonopah, Nye County, Nevada                              
CRICHTONITE (Plumbian) - Fazenda Guariba, Minas Gerais, Brazil                             
CRISTOBALITE - Obregon, State of Sonora, Mexico
CRISTOBALITE – Summit Rock, Klamath County, Oregon
CRISTOBALITE - Thomas Range, Juab County, Utah                                             
CROCOITE – Baita Bihor (Rezbanya), Romania
CROCOITE - Beresov District, near Ekaterinburg (Sverdlovsk), Ural Mountains, Russia               
CRONSTEDTITE - Herja (Kisbanya), Transylvania, Romania
CRYOLITE – Ivigtut, Arsuk Firth, Kitaa Province, West Greenland
CRYOLITE – St. Peters Dome Area, West of Cheyenne Mountain, El Paso County, Colorado
CRYPTOHALITE – Katherina Mine, Radvanice, Bohemia, Czech Republic
CRYPTOHALITE - Kehley’s Run Mine, Shenandoah, Schuylkill Co., Pennsylvania – See HIERATITE
CRYPTOMELANE - Kokko Mine, Fugoppe Zawa, Yoichi Machi, Hokkaido Province, Japan            
CRYPTOMELANE – Reaphook Hill, near Blinman, S.A., Australia
CRYPTOMELANE – Reaphook Hill, SE of Blinman, S.A., Australia
CUBANITE - Henderson #2 Mine, Chibougamau, Quebec, Canada
CUBANITE - Mackinaw Mine, Monte Cristo, Snohomish County, Washington                       
CUBANITE – Morro Velho Gold Mine, Nova Lima, Minas Gerais, Brazil
CUMENGITE – Santa Rosalia, Baja California, Mexico  D, T
CUPRITE Var. Chalcotrichite – Tsumeb, Namibia
CUPROSKLODOWSKITE – Happy Jack Mine, White Canyon District, San Juan County, Utah
CUPROSKLODOWSKITE - Jachymov, Northwest Bohemia, Czech. Republic
CUPROSKLODOWSKITE - Musonoi Mine, Kolwezi, Shaba Province, Zaire   D                        
CUPROTUNGSTITE - 1/2 Mi. N. of Crystal Peak Guard Station, Sierra County, California       
CUPROTUNGSTITE - Wilson Consolidated Mine, Gold Hill District, Tooele County, Utah         
CURETONITE - near Golconda, Humboldt County, Nevada  T                                     
CURIENITE – Mounana Uranium Mine, Haut-Ogoue Province, Gabon
CURITE - Kasolo Pit, Shinkolobwe Mine, Shaba Province, Zaire                                           
CUSPIDINE - Commercial Quarry, Crestmore, Riverside County, California
CYANOTRICHITE - Burrus Mine, Washoe County, Nevada                                         
CYANOTRICHITE - Maid of Sunshine Mine, Cochise County, Arizona
CYLINDRITE - near Llallagua, Potosi Dept., Bolivia
CYLINDRITE - Porvenir Mine, Huanuni, Bolivia
CYMRITE – Langban, Varmland, Sweden
CYMRITE - Pacheco Pass Road, Santa Clara County, California
CYRILOVITE - Milgun Station, W.A., Australia                                                
CYRTOLITE - Little Patsy Pegmatite, South Platte, Jefferson Co., Colo. – See ZIRCON Var. Cyrtolite

SELECT ALPHABETICAL LISTINGS OF RARE MINERALS HERE!