Cerrar
Ferrohornblenda
CaracterÃsticas generales
Fórmula: Ca2(Fe2+,Mg)4Al(Si7Al)O22(OH,F)2
Sistema de cristalización: MonoclÃnico
Lustre: VÃtreo - perlado
Color: Greenish brown, green, brown or black
Dureza: 5-6
Rareza: común
Propiedades fisicas
Hábito: Massive - granular, massive - fibrous, fibrous or columnar
Lustre: VÃtreo - perlado
Transparencia: Translúcido, Opaco
Color: Greenish brown, green, brown or black
Color en sección fina: Incolora
Raya: Blanco
Dureza (Mohs): 5-6
Tenacidad: Frágil
Exfoliación::
- Primera exfoliación: Perfecta en [???]
- Segunda exfoliación: Perfecta en [???]
- Tercera exfoliación: Perfecta
Fractura: Subconcoidal
Densidad: 3-3,5 g/cm3 (medida) | 3,42 g/cm3 (calculada)
CristalografÃa
Sistema cristalino:MonoclÃnico
Clase (H-M): 2m (2/m) - Prismática
Grupo espacial: C2/m
Parámetros de la celda: a=9,96Å b=18,19Å c=5,32Å
Estructura del cristal: β=104,87º
Volumen de unidad de celda: V 931,56Ã…
Z: 2
Difracción de Rayos X:D(hkl) | Intensidad |
---|---|
8,52 | 100 |
3,159 | 90 |
2,728 | 75 |
Propiedades ópticas
Tipo: Biaxial (-)
Valores RI: nα= 1,687 - 1,694; nβ= 1,7 - 1,707; nγ= 1,701 - 1,712
2V: medida: -30º - 10
Máxima birrefringencia: δ = 0,018
Dispersión: Weak to strong, r>v
Pleocroismo: Pleiocroico
X: Deep brown or pale greenish brown
Y: Straw yellow or dark greenish brown
Z: Yellow or bluish green
Propiedades quÃmicas
Fórmula: Ca2(Fe2+,Mg)4Al(Si7Al)O22(OH,F)2
Elementos quÃmicos: Ca, Fe, Mg, Al, Si, O, H, F
Composición quÃmica: H: 0,21%, Si: 20,75%, Fe: 25,05%, Al: 4,98%, O: 40,53%, Ca: 8,46%,
Tests quÃmicos
Fusibilidad: 3; Mineral tipo: Almandino; Punto de fusión: 1050ºC; Funde con mechero solo trozos pequeños
Reacción a los ácidos: Insoluble en ácidos.
Otras propiedades
Magnetismo: Magnetic after heating
Yacimientos y localidades de interés
Localidades
- Barkevik, Norway - Localidad tipo.
- Bear Lake Road, near Tory Hill, Ontario, Canada
- Bessemer Mine, Mayo Township, Bancroft, Hastings Co., Ontario, Canada
- Burgess Mine, Carlow Township, Bancroft, Hastings Co., Ontario, Canada
- Craigmont Mine, Raglan twp, Renfrew Co., Ontario, Canada
- Evans-Lou pegmatite, near St-Pierre-de-Wakefield, Portland Twp., Papineau Co., Québec, Canada
- Lake Clear - Kuehl Lake area, Renfrew Co., Ontario, Canada
- MacDonald mine, Monteagle Township, Bancroft, Hastings Co., Ontario, Canada
- Meany Mine, Lake Clear, Renfrew Co., Ontario, Canada
- Rose Quartz Pit, Lyndoch Township, Quadeville, Renfrew Co., Ontario, Canada
- Silver Crater mine, Faraday Township, Bancroft, Hastings Co., Ontario, Canada
- Smart Mine, Lake Clear, Renfrew Co., Ontario, Canada
- Turner's Island Mine, Lake Clear, Renfrew Co., Ontario, Canada
- Unnamed quarry, Carlow Township, Bancroft, Hastings Co., Ontario, Canada
- Watson Mine, Monteagle Township, Bancroft, Hastings Co., Ontario, Canada
- Woodcox Mine, Bancroft, Monteagle Township, Hastings Co., Ontario, Canada
- York River Skarn, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
- Libodrice, Kutna Hora, Stredocesky, Czech Republic
- Medenec (Kupferberg), Chomutov, Krusne Hory, Vychodocesky, Czech Republic
- Vlastejovice, Kutna Hora, Stredocesky, Czech Republic
- Botallack mine, Botallack, St. Just, Cornwall, England
- Bowder Stone, Borrowdale, Cumbria, England
- Bowness Knott, Ennerdale, Cumbria, England
- Burtness Wood, Buttermere, Cumbria, England
- Cadgwith, The Lizard, Cornwall, England
- Dean quarry, St. Keverne, Cornwall, England
- Great Retallack mine, Perranzabuloe, Cornwall, England
- Housel Bay, The Lizard, Cornwall, England
- Landewednack, The Lizard, Cornwall, England
- Mecklin Wood, Wasdale, Cumbria, England
- Meldon BR Quarry, Okehampton, Devon, England
- Mullion, The Lizard, Cornwall, England
- Penberthy Croft mine, St. Hilary, Cornwall, England
- Porthoustock quarry, St. Keverne, Cornwall, England
- Red a Venn mine, Okehampton, Devon, England
- Shap Blue Quarry, Shap, Cumbria, England
- South Terras mine, St. Stephen-in-Brannel, Cornwall, England
- Thurstaston Beach, Wirral, Merseyside, England
- Artenberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
- Bärensteinbruch quarry, Radautal, Bad Harzburg, Harz Mts, Sachsen, Germany
- Pflasterkaute quarry, Eisenach, Thüringen, Germany
- Ivigtut, Arsuk Fjord, Greenland
- Mount Vesuvius, Naples, Campania, Italy
- Val Graveglia, Liguria, Italy
- Barkevik, Langesundfjord, Telemark, Norway
- Buö, Arendal, Froland, Aust-Agder, Norway
- Eg, Kristiansand, Vest-Agder, Norway
- Evje-Ivedal, Iveland, Aust-Agder, Norway
- Kongsberg, Buskerud, Norway
- Kragero, Telemark, Norway
- Snarum, Vikersund, Buskerud, Norway
- Aldan Shield, Yakutiya, Siberia, Russia
- Natural Bridge, Jefferson Co., New York, USA
- Ardara, Co.Donegal, Scotland
- Eas a Bradain, Luib, Isle of Skye, Scotland
- Glenbuchat, Aberdeenshire, Scotland
- Lugar, Ayrshire, Scotland
- Marble Quarries (granite), Torrin, Isle of Skye, Scotland
- Marsco, Sligachan, Isle of Skye, Scotland
- Ribigill Quarry, Tongue, Sutherland, Scotland
- Arvigo, Val Calanca, Graubünden, Switzerland
- "Redstone Green Granite"" quarry, Conway, Carroll Co., New Hampshire, USA"
- 79 Mine, Banner District, Gila Co., Arizona, USA
- Adams Hill, South Newfane, Windham Co., Vermont, USA
- Amity, Orange Co., New York, USA
- Asbestos Mine, Pelham, Hampshire Co., Massachusetts, USA
- Bald Head Cliff locality, York, York Co., Maine, USA
- Bayer-Mingolla Quarry, Ashland, Norfolk Co., Massachusetts, USA
- Beacon Pole Hill/Iron Mine Hill/Diamond Hill etc, Cumberland Area, Providence Co., Rhode Island, USA
- Ben Franklin Mine, West Pikeland Township/Oppermans Corner, Chester Co., Pennsylvania, USA
- Benson Mines, Newton Falls/Star Lake, St.Lawrence Co., New York, USA
- Betts Manganese Mine, Plainfield, Hampshire Co., Massachusetts, USA
- Bigger Pegmatite/Malachite Mines, Morrison, Jefferson Co., Colorado, USA
- Black Mountain mica Mine, Rumford Township, Oxford Co., Maine, USA
- Blue Berry Mt., Woburn, Middlesex Co., Massachusetts, USA
- Bristol, Bristol Co., Rhode Island, USA
- Bull Hill nepheline-syenite deposit, Crook Co., Wyoming, USA
- Callahan mine, Brooksville, Hancock Co., Maine, USA
- Carlton Talc Quarry, Chester, Windsor Co., Vermont, USA
- Catherine Mt. Molybdenite prospect, T10 SD, Hancock Co., Maine, USA
- Central York Mts., West Seward Peninsula, Alaska, USA
- Chester Emery mine, Chester, Hampden Co., Massachusetts, USA
- Cheyenne Area, Iron Mountain, Wyoming, USA
- Chino ore body, Central Mining District, Grant Co., Nevada, USA
- Colby Farm Lime-Marble quarry, Phippsburg, Sagadahoc Co., Maine, USA
- Conklin quarry, Lincoln, Providence Co., Rhode Island, USA
- Copper Queen Mine, Bisbee, Cochise Co., Arizona, USA
- Cotopaxi feldspar mine (Henry pegmatite), Cotopaxi district, Fremont Co., Colorado, USA
- Coventry Area, Kent Co., Rhode Island, USA
- Crestmore Quarry, Crestmore, Riverside Co., California, USA
- Crystal Park, Manitou Springs-Pikes Peak Area, El Paso Co., Colorado, USA
- Crystal Pass, Ray, Pinal Co., Arizona, USA
- Culbreath Mine, Saluda, Saluda Co., South Carolina, USA
- Davis pyrite mine, Rowe, Franklin Co., Massachusetts, USA
- Devils Hole mine, Devils Hole pegmatite, Texas Creek area, Fremont Co., Colorado, USA
- Edenville, Orange Co., New York, USA
- Foote Spodumene Mine, Kings Mountain, Cleveland Co., North Carolina, USA
- Forge Hill iron mines, West Hawley, Franklin Co., Massachusetts, USA
- Franconia Iron mine, Sugar Hill, Grafton Co., New Hampshire, USA
- French Creek Mines, Knauertown, Chester Co., Pennsylvania, USA
- Gabbs District, Nye Co., Nevada, USA
- General, Mesabi Iron Range, Itasca & St.Louis Co., Minnesota, USA
- Harriman prospect, Union, Knox Co., Maine, USA
- Indian Lake, Essexty, New York, USA
- Iron Springs District, Cedar City Area, Utah, USA
- Jensen Quarry, Riverside Co., California, USA
- Lake Valhalla, Montville, Morris Co., New Jersey, USA
- Liberty Bell and Washington Pass, Okanogan Co., Washington, USA
- Little Compton, Newport, Rhode Island, USA
- Lovejay Gravel Pit, North Cornay, Carroll Co., New Hampshire, USA
- Lovejoy Gravel pits, Albany, Carroll Co., New Hampshire, USA
- Magnet Cove, Hot Spring Co., Arkansas, USA
- Mahopac Iron Mine, Brewster, Putnam Co., New York, USA
- Massachusetts Talc Company mine, Rowe, Franklin Co., Massachusetts, USA
- McManus Gulch, Clear Creek Co., Colorado, USA
- Middletown, Newport Co., Rhode Island, USA
- Miller adit, Lyman, Grafton Co., New Hampshire, USA
- Mineral, Mineral Co., Virginia, USA
- Morristown Area, Maricopa Co., Arizona, USA
- Mt Belvidere mines, Lowell & Eden Mills, Orleans Co., Vermont, USA
- New Cornelia Mine, Ajo, Pima Co., Arizona, USA
- North Mountain Serpentine locality, Cheshire, Berkshire Co., Massachusetts, USA
- Ochee Springs, Providence Co., Rhode Island, USA
- Old Guard Mine, Tombstone, Cochise Co., Arizona, USA
- Ore Hill mine, Warren, Grafton Co., New Hampshire, USA
- Ore Knob Copper Mine, Ashe, Ashe Co., North Carolina, USA
- Osborne Soapstone quarry, Blandford, Hampden Co., Massachusetts, USA
- Pine Creek Mine, Bishop, Inyo Co., California, USA
- Pine Island, Orange Co., New York, USA
- Poorhouse Quarry, Embrieville, Chester Co., Pennsylvania, USA
- Pound of Tea Island Epidote locality, Freeport, Cumberland Co., Maine, USA
- Prospect Mt., Litchfield, Litchfield Co., Connecticut, USA
- Providence, Providence Co., Rhode Island, USA
- Questa Mine, Taos Co., New Mexico, USA
- Ringwood Iron Mine, Ringwood, Passaic Co., New Jersey, USA
- Road Gulch, Fremont Co., Colorado, USA
- Rockport, Cape Ann, Essex Co., Massachusetts, USA
- Russell, St.Lawrence Co., New York, USA
- Scrub Oaks Mine, Dover, Morris Co., New Jersey, USA
- Snow/Sackett/Marcia/Old/Melvin/Wright Mines etc, Chester, Hampden Co., Massachusetts, USA
- Snowbird/Mary Ellen Mine, Atlantic City District, Fremont Co., Wyoming, USA
- Spor Mt., Nevada, USA
- Stafford Court House, Virginia, USA
- Stanislaus Mine, Carson Hill Area, Calaveras Co., California, USA
- Treadwell Mine, Douglas Island opposite Junea City, SE Juneau Area, Alaska, USA
- Tungsten Mine, Trumbull, Fairfield Co., Connecticut, USA
- Unnammed Quartz propspects, Chester, Hampden Co., Massachusetts, USA
- Warren Nickel prospect, Warren, Knox Co., Maine, USA
BibliografÃa y más información
- American Mineralogist, vol. 63, p.1023-1052, (1978)
report this ad
Dana 8th ed. : 66.1.3a.5
report this ad
Barra lateral
Clasificación
Nickel-Strunz : 09.DE.10- 9: Silicatos
- 09.D: Inosilicatos
- 09.DE: Inosilicatos con cadena doble de 2-periodo, Si4O11; ClinoanfÃboles
Dana 8th ed. : 66.1.3a.5
CategorÃas
#minerales #geologÃa #calcita #cuarzo #mineralogÃa #naturalezaMinerales más vistos esta semana
Bornita
Sulfuros y sulfosales
Corindón
Óxidos
Diamante
Elementos nativos
Estibina
Sulfuros y sulfosales
Calcita
Carbonatos y nitratos
Talco
Silicatos
Ortosa
Silicatos
Arsenopirita
Sulfuros y sulfosales
Aragonito
Carbonatos y nitratos
Dolomita
Carbonatos y nitratos
Últimos minerales añadidos
Nickelskutterudita
Sulfuros y sulfosales
Cordierita
Silicatos
Senarmontita
Óxidos
Torbernita
Fosfatos, arsenatos y ...
Liroconita
Fosfatos, arsenatos y ...
Proustita
Sulfuros y sulfosales
Crisocola
Silicatos
Abellaita
Carbonatos y nitratos