Diopsido

Características generales


Datos generales


Fórmula: CaMgSi2O6
Sistema de cristalización: Monoclínico
Lustre: Vítreo
Color: Grey, green, colourless, brown or blue
Dureza: 5,5-6,5
Rareza: común
Grupo de minerales: Grupo del Piroxeno.
Serie: Diopside-Hedenbergite Series
Diopside-Johannsenite Series


Clasificación

Estado IMA: Válido. Descrito con antelación a 1959 (pre-IMA), se considera un mineral clásico o histórico (grandfathered)

Nickel-Strunz : 09.DA.15
  • 9: Silicatos
  • 09.D: Inosilicatos
  • 09.DA: Inosilicates with 2-periodic single chains,Si2O6- pyroxene family

Dana 8th ed. : 65.1.3a.1

Etimología:

"From the Greek dis - ""two kinds"" and opsis - ""opinion.""



Formación y ambiente

Basic and ultrabasic igneous and metamorphic rocks.

Accessory, igneous, magmatic, magmatic (ultra-basic), metamorphic (regional/thermal), post magmatic

Propiedades fisicas

Hábito: Prismatic, lamellar, granular, fine, fibrous, crystalline - coarse or blocky

Lustre: Vítreo

Transparencia: Transparente, Translúcido

Color: Grey, green, colourless, brown or blue

Color en sección fina: Incolora

Dureza (Mohs): 5,5-6,5

Tenacidad: Frágil

Exfoliación::
  • Primera exfoliación: Buena en [110]
  • Segunda exfoliación: Buena en [???]
  • Tercera exfoliación: Buena


Fractura: Concoidal

Densidad: 3,3-3,6 g/cm3 (medida) | 3,26 g/cm3 (calculada)

Cristalografía

Sistema cristalino: Monoclínico

Clase (H-M): 2m (2/m) - Prismática

Grupo espacial: C2/c

Parámetros de la celda: a=9,761Å b=8,926Å c=5,258Å

Estructura del cristal: β=105,8º

Volumen de unidad de celda: V 440,8Å

Z: 4

Difracción de Rayos X:
Difracción de Rayos X
D(hkl)Intensidad
2,991100
2,52840
2,89330

Propiedades ópticas

Tipo: Biaxial (+)

Valores RI: nα= 1,663 - 1,699; nβ= 1,671 - 1,705; nγ= 1,693 - 1,728

2V: medida: 58º - 63

Máxima birrefringencia: δ = 0,03

Dispersión: Weak to moderate, r>v

Pleocroismo: Pleochroic: Weak

X: Pale bluish green or dark blue green
Y: Brownish green or dark blue green
Z: Yellowish green or yellow bluish green



Propiedades químicas

Fórmula: CaMgSi2O6

Elementos químicos: Ca, Mg, Si, O

Composición química: Mg: 11,22%, Ca: 18,51%, Si: 25,94%, O: 44,33%,

Tests químicos

Fusibilidad: 4; Mineral tipo: Actinolita; Punto de fusión: 1200ºC; Funde con soplete, se redondean aristas
Reacción a los ácidos: Se disuelve en HCl
Formación de sublimados: Fuses with difficulty.

Otras propiedades

Luminiscente: Green-white or cream


Relaciones con otros minerales

Miembro del grupo de minerales: Grupo del Piroxeno.

Minerales pertenecientes al Grupo del Piroxeno.

Minerales acompañantes
NombreImagenClase mineralógica
AegirinaAegirina9. Silicatos
09.D: Inosilicatos

NaFe3+Si2O6
Aegirina-augita9. Silicatos
09.D: Inosilicatos

(Na,Ca)(Fe3+,Fe2+,Mg,Al)Si2O6
AugitaAugita9. Silicatos
09.D: Inosilicatos

(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Burnettita.
:

CaVAlSiO6
Clinoenstatita9. Silicatos
09.D: Inosilicatos

MgSiO3
Clinoferrosilita9. Silicatos
09.D: Inosilicatos

Fe2+SiO3
Davisita9. Silicatos
09.D: Inosilicatos

CaScAlSiO6
Diopsido9. Silicatos
09.D: Inosilicatos

CaMgSi2O6
Donpeacorita9. Silicatos
09.D: Inosilicatos

(Mn2+,Mg)Mg[SiO3]2
EspodumenaEspodumena9. Silicatos
09.D: Inosilicatos

LiAlSi2O6
EsseneitaEsseneita9. Silicatos
09.D: Inosilicatos

CaFe3+[AlSiO6]
Ferrosilita9. Silicatos
09.D: Inosilicatos

FeSiO3
Grossmanita9. Silicatos
09.D: Inosilicatos

CaTi3+
HedenbergitaHedenbergita9. Silicatos
09.D: Inosilicatos

CaFe2+Si2O6
Jadeita9. Silicatos
09.D: Inosilicatos

Na(Al,Fe3+)Si2O6
Jervisita9. Silicatos
09.D: Inosilicatos

(Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6
Johannsenita9. Silicatos
09.D: Inosilicatos

CaMn2+Si2O6
Kanoita9. Silicatos
09.D: Inosilicatos

Mn2+(Mg,Mn2+)Si2O6
Kosmochlor9. Silicatos
09.D: Inosilicatos

NaCrSi2O6
Kushiroita9. Silicatos
09.D: Inosilicatos

CaAl[AlSiO6]
Namansilita9. Silicatos
09.D: Inosilicatos

NaMn3+Si2O6
Natalyita9. Silicatos
09.D: Inosilicatos

NaV3+Si2O6
Omphacita9. Silicatos
09.D: Inosilicatos

(Ca,Na)(Mg,Al)Si2O6
Petedunnita9. Silicatos
09.D: Inosilicatos

Ca(Zn,Mn2+,Mg,Fe2+)Si2O6
Pigeonita9. Silicatos
09.D: Inosilicatos

(Mg,Fe2+,Ca)(Mg,Fe2+)Si2O6


Minerales acompañantes:

Minerales acompañantes
NombreImagenClase mineralógica
Actinolita9. Silicatos
09.D: Inosilicatos

{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AndraditaAndradita9. Silicatos
09.A: Nesosilicatos

Ca3Fe23+(SiO4)3
BiotitaBiotita9. Silicatos
09.E: Filosilicatos

K(Mg, Fe)3AlSi3O10(OH, F)2
CalcitaCalcita5. Carbonatos (nitratos)
05.A: Carbonatos sin aniones adicionales, sin H2O

CaCO3
Chamosita9. Silicatos
09.E: Filosilicatos

(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10)(OH,O)8
DolomitaDolomita5. Carbonatos (nitratos)
05.A: Carbonatos sin aniones adicionales, sin H2O

CaMg(CO3)2
FluoritaFluorita3. Haluros
03.A: Haluros simples, sin H2O

CaF2
Grosularia9. Silicatos
09.A: Nesosilicatos

Ca3Al2(SiO4)3
MagnetitaMagnetita4. Óxidos
04.B: Metal:Oxígeno = 3:4 y similar

Fe2+Fe23+O4
Olivino9. Silicatos
09.A: Nesosilicatos

(Mg,Fe2+)2SiO4
Flogopita9. Silicatos
09.E: Filosilicatos

KMg3(AlSi3O10)(OH)2
VesuvianitaVesuvianita9. Silicatos
09.B: Sorosilicatos

(Ca,Na,)19(Al,Mg,Fe3+)13(,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10




Yacimientos y localidades de interés

Localidades

  • Mussa Alpe, Val d'Ala, Torino, Piemonte, Italy - Localidad tipo.
  • Argyle Aki diatreme, Kimberley, Western Australia, Australia
  • Cygnet, Tasmania, Australia
  • Argyle Aki diatreme, Kimberley, Western Australia, Australia
  • Cygnet, Tasmania, Australia
  • Argyle Aki diatreme, Kimberley, Western Australia, Australia
  • Cygnet, Tasmania, Australia
  • Argyle Aki diatreme, Kimberley, Western Australia, Australia
  • Cygnet, Tasmania, Australia
  • Madan, Rhodope Mtns., Plovdiv, Bulgaria
  • Highway 62N, Maynooth, Monteagle Township, Bancroft, Hastings Co., Ontario, Canada
  • Jeffrey pit, Asbestos, Shipton Twp., Richmond Co., Québec, Canada
  • Contley, Québec, Canada
  • Evans-Lou pegmatite, near St-Pierre-de-Wakefield, Portland Twp., Papineau Co., Québec, Canada
  • Parker mine, Notre Dame du Laus, Québec, Canada
  • Orford Nickel mine, Québec, Canada
  • York River Skarn, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
  • Southern Baffin Island, Nunavut, Northwest Territories, Canada
  • near Cawood, Québec, Canada
  • Mt St.-Hilaire, Rouville Co., Québec, Canada
  • Kunlun Mtns., China
  • Vlastejovice, Kutna Hora, Stredocesky, Czech Republic
  • Medenec (Kupferberg), Chomutov, Krusne Hory, Vychodocesky, Czech Republic
  • Vapenna (Setzdorf), Maehren, Czech Republic
  • Burscough Quarry, Burscough, Lancashire, England
  • Coverack Cove, The Lizard, Cornwall, England
  • Bodmin Wheal Betsy, Lanivet, Cornwall, England
  • Treburland Manganese mine, Altarnun, Cornwall, England
  • Thurstaston Beach, Wirral, Merseyside, England
  • New Aplite Quarry, Meldon, Okehampton, Devon, England
  • Meldon BR Quarry, Okehampton, Devon, England
  • Spernic Cove, Gwenter, Cornwall, England
  • Coverack, The Lizard, Cornwall, England
  • Pargas, Turku-Pori, Finland
  • Jokisivu (Kujankallio), Huittinen, Turku-Pori, Finland
  • Limburg, Kaiserstuhl, Baden-Wuerttemberg, Germany
  • Bärensteinbruch quarry, Radautal, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Nesselgrund quarry, Schnellbach, Bad Salzungen, Thüringen, Germany
  • Orberg-Badberg, Kaiserstuhl, Baden-Wuerttemberg, Germany
  • Nisiro Island, Greece
  • Fiskenaesset, Greenland
  • Fiskenaesset, Nuuk, Greenland
  • Ilimaussaq, West Greenland
  • Val Graveglia, Liguria, Italy
  • Traversella, Piedmont, Italy
  • Mount Vesuvius, Naples, Campania, Italy
  • Monte Rosso, Val d'Aosta, Piedmont, Italy
  • Molinello mine, Val Graveglia, Liguria, Italy
  • Kamisano, Nanbu, Minamikoma, Yamanashi Pref., Japan
  • Mina Ojuela, Mapimi, Durango, Mexico
  • Mogok, Ohngaing, Sagaing, Myanmar Republic
  • Eg, Kristiansand, Vest-Agder, Norway
  • Ocna de Fier, Caras-Severin Co., Banita, Hunedoara, Romania
  • Baita Mine, Nucet, Bihor Co., Western Carpathians, Romania
  • Dal'negorsk, Primorskiy Kray, Russia
  • Afrikanda, Murmansk Oblast, Lovozero massif, Kola Peninsula, Russia
  • Akhmatovskaya Kop', Chelyabinsk, Russia
  • Asbest, Ekaterinberg, Sverdlovsk, Ural Mts., Russia
  • Bazhenovskoe Deposit, Asbest, Sverdlovsk, Russia
  • Asbest, Yekaterinburg Oblast', Kola Peninsula, Russia
  • Slyudyanka complex, Lake Baikal region, Zabaikalye (Transbaikal), Siberia, Russia
  • Slydianka, South of Baikal, Siberia, Russia
  • Kovdor massif and Khibina massif, Vuonnemi River, Kola Peninsula, Russia
  • Dalnabo Limestone quarry, in Glengairn, Aberdeenshire, Scotland
  • Iron/copper trial, Kilchrist, Broadford, Isle of Skye, Scotland
  • Carr Brae, Dornie, Skye & Localsh district, Scotland
  • Wessels mine, Kalahari Mn field, Kuruman Hill, Cape Province, South Africa
  • Långban mines, Bergslagen ore district, Värmland, Sweden
  • Saas Fee, Valais, Switzerland
  • Dara-i-Pioz, Alayskiy Range, Garm, Tajikistan
  • Sneech Pond Copper mine, Cumberland, Providence Co., Rhode Island, USA
  • Park City & Alta, Clayton Peak, Utah, USA
  • Parker Mountain Mountain Mine, Center Strafford, Coos Co., New Hampshire, USA
  • Pease Mt. locality, Cornish, York Co., Maine, USA
  • Pipestone Pass Area, Bald Mts. Area, Jefferson Co., Montana, USA
  • Radichal kimberlite diatreme, Albany Co., Wyoming, USA
  • Rumford Falls locality, Rumford, Oxford Co., Maine, USA
  • Scott Property, Fine, St. Lawrence Co., New York, USA
  • Sedalia Copper Mine, Sedalia, Chaffee Co., Colorado, USA
  • Ossining, Westchester Co., New York, USA
  • Osborne Soapstone quarry, Blandford, Hampden Co., Massachusetts, USA
  • Pitts-Tenney mine, Minot, Androscoggin Co., Maine, USA
  • Dekalb, St. Lawrence Co., New York, USA
  • Denny Mountain Area, King Co., Washington, USA
  • Easton Area, North Hampton Co., Pennsylvania, USA
  • Eden Mills, Lamoille Co., Vermont, USA
  • Edwards, Gouverneur, St. Lawrence Co., New York, USA
  • Eldorado Mine, Indio, Riverside Co., California, USA
  • Fairfax Quarry, Centreville, Fairfax Co., Virginia, USA
  • Crestmore Quarry, Crestmore, Riverside Co., California, USA
  • Lake Valhalla, Montville, Morris Co., New Jersey, USA
  • State Line kimberlite district, Albany Co., Wyoming, USA
  • Sterling Hill and Franklin Furnace, Sussex Co., New Jersey, USA
  • Mulvaney property, Pitcairn, St. Lawrence Co., New York, USA
  • Murfreesboro, Pike Co., Arkansas, USA
  • Menominee Range, Dickinson & Iron Co., Michigan, USA
  • Trumball Peak, Mariposa Co., California, USA
  • Trumbull Creek Area, Mariposa Co., California, USA
  • Two Ponds, Orange Co., Alabama, USA
  • Warren Nickel prospect, Warren, Knox Co., Maine, USA
  • Wentworth Farm locality, Parsonsfield, York Co., Maine, USA
  • Tilly Foster Mine, Brewster, Putnam Co., New York, USA
  • Mt Belvidere mines, Lowell & Eden Mills, Orleans Co., Vermont, USA
  • Mount Freedom, Morris Co., New Jersey, USA
  • Terry Fork, Madison Co., North Carolina, USA
  • Pine Creek Mine, Bishop, Inyo Co., California, USA
  • Lime Quarry, Bolton, Worcester Co., Massachusetts, USA
  • Little Sandy River Area, Elliott Co., Kentucky, USA
  • Magdalena district, Socorro Co., New Mexico, USA
  • Magnet Cove, Hot Spring Co., Arkansas, USA
  • McLear Quarry, DeKalk Township, St.Lawrence Co., New York, USA
  • Old Guard Mine, Tombstone, Cochise Co., Arizona, USA
  • Morenci-Metcalf, Clifton, Greenlee Co., Arizona, USA
  • Arlington Quarry etc, Leesburg, Loudoun Co., Virginia, USA
  • De Kalb, St. Lawrence Co., New York, USA
  • Berry Ledge locality, Cornish, York Co., Maine, USA
  • Central York Mts., West Seward Peninsula, Alaska, USA
  • LaFlamme quarry, Minot, Androscoggin Co., Maine, USA
  • Benson Mines, Newton Falls/Star Lake, St.Lawrence Co., New York, USA
  • Amity, Orange Co., New York, USA
  • Cloverdale Russian River Area, Mendocino Co., California, USA
  • Hunting Hill quarry, Rockville, Montgomery Co., Maryland, USA
  • Christmas Mine, Hayden, Gila Co., Arizona, USA
  • French Creek Mines, Knauertown, Chester Co., Pennsylvania, USA
  • Gabbs District, Nye Co., Nevada, USA
  • Cedar Mt area, Sweetwater Co., Wyoming, USA
  • Camp Hinds locality, Raymond, Cumberland Co., Maine, USA
  • Chute prospect, Casco, Cumberland Co., Maine, USA
  • Balmat-Edwards District, Governor, St.Lawrence Co., New York, USA
  • Benitoite/Dallas/Victor/New Idria Mines, New Idria Mining District, San Benito & Fresno Counties, California, USA
  • American mine, Bingham Canyon, Salt Lake Co., Utah, USA
  • Bergendahl/Davis/Pease/Piper Hill/Tin, Newfield, York Co., Maine, USA
  • 79 Mine, Banner District, Gila Co., Arizona, USA
  • Bisbee, Cochise Co., Arizona, USA
  • Brant Lake Area, Thurman, Warren Co., New York, USA
  • Calumet Iron Mine, Salida, Chaffee Co., Colorado, USA
  • Gedar Butte, Tillamook Co., Oregon, USA
  • General Area, Franklin, Sussex Co., New Jersey, USA
  • Harvard Quarry, Greenwood Township, Oxford Co., Maine, USA
  • Colby Farm Lime-Marble quarry, Phippsburg, Sagadahoc Co., Maine, USA
  • Conklin quarry, Lincoln, Providence Co., Rhode Island, USA
  • Copper Mountain Area, Sulzer/Prince of Wales Island, Alaska, USA
  • Copper Queen Mine, Bisbee, Cochise Co., Arizona, USA
  • Cornwall, Lebanon Co., Pennsylvania, USA
  • Cotopaxi Mine, Cotopaxi, Fremont Co., Colorado, USA
  • Crazy Mts., Park Co., Montana, USA
  • Foote Spodumene Mine, Kings Mountain, Cleveland Co., North Carolina, USA
  • Kingsbridge, Bronx Co., New York, USA
  • Jensen Quarry, Riverside Co., California, USA
  • General, Mesabi Iron Range, Itasca & St.Louis Co., Minnesota, USA
  • Genessee Mountain Area, Jefferson Co., Colorado, USA
  • Goodall/Webster, Sanford, York Co., Maine, USA
  • Green Mountain Mine, Prince of Wales Island, Alaska, USA
  • Flux Mine, Harshaw District, Patagonia Mountains, Santa Cruz Co., Arizona, USA
  • Fernando Mine/etc, Darwin District, Inyo Co., California, USA
  • Iron Hill, Cebolla Creek area, Powderhorn, Gunnison Co., Colorado, USA
  • Iron Mt kimberlite district, Laramie Co., Wyoming, USA
  • Italian Mt. Area, Aspen, Gunnison Co., Colorado, USA
  • C-thon Prospect, Stanley District, Graham Co., Arizona, USA


Bibliografía y más información

Rock Forming Mineral, London, vol. 2A, p.2ND,V.2A,198, (1978)
American Mineralogist, vol. 76, p.1141(s), (1991)

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