Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Clinoenstatite

Big Photo

Loire River alluvials, Gien, Loiret, Centre, France
© François Périnet

Show Clinoenstatite Photos (5)
Formula:
Mg
 
2
[Si
 
2
O
 
6
]
System:MonoclinicColour:Colourless, greenish ...
Lustre:VitreousHardness:5 - 6


Pyroxene Group - Clinopyroxene Subgroup

Classification of Clinoenstatite

IMA status:Approved
Strunz 8th edition ID:8/F.01-10
Nickel-Strunz 10th (pending) edition ID:9.DA.10

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
Dana 8th edition ID:65.1.1.1

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
Hey's CIM Ref.:14.4.3

14 : Silicates not Containing Aluminum
4 : Silicates of Mg
mindat.org URL:http://www.mindat.org/min-1072.html
Please feel free to link to this page.

Physical Properties of Clinoenstatite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless, greenish yellow, yellowish brown, green-brown
Streak:White
Hardness (Mohs):5 - 6
Cleavage:Distinct/Good

Crystallography of Clinoenstatite

Crystal System:Monoclinic
Cell Parameters:a = 9.6Å, b = 8.81Å, c = 5.17Å
β = 108.28°
Ratio:a:b:c = 1.09 : 1 : 0.587
Unit Cell Volume:V 415.19 ų (Calculated from Unit Cell)

Optical Data of Clinoenstatite

Type:Biaxial (+)
RI values: nα = 1.651 nβ = 1.654 nγ = 1.660
Maximum Birefringence:δ = 0.009

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:strong

Chemical Properties of Clinoenstatite

Formula:
Mg
 
2
[Si
 
2
O
 
6
]
Essential elements:Mg, O, Si
All elements listed in formula:Mg, O, Si
Common Impurities:Ti,Al,Cr,Fe,Mn,Ca,Na

Relationship of Clinoenstatite to other Species

Related to:
  • Clinopyroxene Subgroup
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    9.DA.05Donpeacorite
    (Mn
    2+
     
    		,Mg)Mg[SiO
     
    3
    		]
     
    2
    9.DA.05Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    9.DA.05Ferrosilite
    Fe
     
    2
    		[SiO
     
    3
    		]
     
    2
    9.DA.10Clinoferrosilite
    Fe
    2+
     
    		(Fe
    2+
     
    		,Mg)[Si
     
    2
    		O
     
    6
    		]
    9.DA.10Kanoite
    Mn
    2+
     
    		(Mg,Mn
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DA.10Pigeonite
    (Mg,Fe
    2+
     
    		,Ca)(Mg,Fe
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DA.15Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    9.DA.15Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    9.DA.15Esseneite
    CaFe
    3+
     
    		[AlSiO
     
    6
    		]
    9.DA.15Hedenbergite
    CaFe
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    9.DA.15Johannsenite
    CaMn
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    9.DA.15Petedunnite
    Ca(Zn,Mn
    2+
     
    		,Mg,Fe
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DA.15Davisite
    CaScAlSiO
     
    6
    9.DA.15IMA2008-059
    CaAl[AlSiO
     
    6
    		]
    9.DA.15IMA2008-042a
    CaTi
    3+
     
    		 AlSiO
     
    6
    9.DA.20Aegirine-augite
    (Na,Ca)(Fe,Fe,Mg,Al)Si
     
    2
    		O
     
    6
    9.DA.20Omphacite
    (Ca,Na)(Mg,Al)[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Jadeite
    Na(Al,Fe
    3+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Jervisite
    (Na,Ca,Fe
    2+
     
    		)(Sc,Mg,Fe
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Kosmochlor
    NaCr[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Namansilite
    NaMn
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    9.DA.25Natalyite
    Na(V
    3+
     
    		,Cr)[Si
     
    2
    		O
     
    6
    		]
    9.DA.30Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Related Minerals - Hey's Index Grouping:

    - +
    14.4.1Forsterite
    Mg
     
    2
    		[SiO
     
    4
    		]
    14.4.2Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    14.4.4Chrysotile
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    14.4.5Clinochrysotile
    14.4.6Orthochrysotile
    14.4.7Parachrysotile
    14.4.8Lizardite
    Mg
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    14.4.9Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    14.4.10Spadaite
    MgSiO
     
    2
    		(OH)
     
    2
    		·H
     
    2
    		O
    14.4.11Sepiolite
    Mg
     
    4
    		Si
     
    6
    		O
     
    15
    		(OH)
     
    2
    		·6H
     
    2
    		O
    14.4.12Loughlinite
    Na
     
    2
    		Mg
     
    3
    		Si
     
    6
    		O
     
    16
    		·8H
     
    2
    		O
    14.4.13Eifelite
    KNa
     
    3
    		Mg
     
    4
    		Si
     
    12
    		O
     
    30
    14.4.14Stevensite
    (Ca,Na)
     
    x
    		Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    14.4.15Antigorite
    (Mg,Fe
    2+
     
    		)
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    14.4.16 Magnesio-anthophyllite

    Other Names for Clinoenstatite

    Other Languages:
    German:Clinoenstatit
    Klinoenstatit
    Klinoenstenit
    Russian:Клиноэнстатит
    Spanish:Clinoenstatita

    Other Information

    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Clinoenstatite

    Reference List:Clark, J.R., D.E. Appleman, and J.J. Papike (1969) Crystal-chemical characterization of clinopyroxenes based on eight new structure refinements. MSA Special Paper 2: 31-50.

    Canadian Mineralogist (1989): 27: 143.

    Internet Links for Clinoenstatite

    Search Engines:
  • Look for Clinoenstatite on Google
  • Look for Clinoenstatite images on Google
    • External Links:
  • Look for Clinoenstatite on Webmineral
  • Look for Clinoenstatite on Athena Mineralogy
  • Look for Clinoenstatite on Wikipedia
  • Look for Clinoenstatite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Clinoenstatite in the Natural History Museum (London) online catalogue
  • Clinoenstatite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Wilensky Fine Minerals
  • Fabre Minerals - search for Clinoenstatite specimens
  • SpiriferMinerals.com - high quality specimens
  • High-end worldwide specimens & outstanding customer service
  • Search for Clinoenstatite on minvision.com
  • Search for Clinoenstatite at Thames Valley Minerals
  • Lapis Mineral Magazin
  • Rare and Unusual minerals at Mineralogical Research Company
  • The Arkenstone - Fine Minerals
  • Buy from David K Joyce minerals
  • Top quality minerals from Kristalle of California
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Clinoenstatite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    These maps work faster with Firefox!
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Antarctica
    AmMin 36:361-367
    AmMin 36:361-367
    Australia
     
    • Queensland
      • South Gregory
        • Tenham Station
    		http://webmineral.com/specimens/picshow.php?id=2940; American Mineralogist, Volume 84, pages 267–271, 1999
    • South Australia
      • Olary Province
        • Plumbago homestead
    		No reference listed
    Austria
     
    • Styria
      • Bad Gleichenberg
        • Kapfenstein
    		Collection of NHM, Vienna
    Azerbaijan
     
    • Naxçıvan (Naxcivan; Nakhichevan) District
      • Shusha
    		http://rruff.geo.arizona.edu/doclib/hom/roedderite.pdf.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; American Mineralogist, Volume 93, pages 902–909, 2008
    Brazil
     
    • Southeast Region
      • Minas Gerais
    		Jour. of South American Earth Sci. 15:709–723
    China
     
    • Anhui Province
      • Anqing Prefecture
        • Yuexi Co.
    		T21A-0507 0800h : Clinoenstatite Exsolution in Diopside of Dabieshan, China - Evidence of Origin $>$ 250km Tectonophysics 2004 Fall Meeting
    France
     
    • Auvergne
      • Puy-de-Dôme
        • Châtelguyon
          • Charbonnières-les-Varennes
    		C. Lemanski, Jr. (re-entry of lost Mindat data).
        • Rochefort-Montagne
          • Vernines
    		collected by François Périnet
        • Tauves
          • Avèze
    		collected by François Périnet
          • Singles
    		collected by François Périnet
    • Centre
      • Loiret
        • Gien
    		collected by François Périnet
    Hungary
     
    • Veszprém Co.
      • Tapolcai Basin
        • Uzsabánya
    		Szakáll & Gatter, 1993
    Japan
     
    • Tokyo Prefecture
      • Ogasawara Islands
        • Chichijima Group
    		Forrest Cureton specimens
    Wada (1904): Minerals of Japan; Alfredo Petrov collection
        • Mukojima Group
    		Alfredo Petrov collection
    New Caledonia
     
    • Northern Province
      • Nouméa Commune
        • Népoui
    		T. Sameshima et al. , Am. Min. , 1983, 68, pp. 1076-1082. / C. Campiglio et al. , Bull. Minéral. , 1986, 109, pp. 423-440.
    Pakistan
     
    • Northern Areas
      • Astor District (Astore District)
    		P Haas collection
    Romania
     
    • Harghita Co.
    Slovakia
     
    • Banská Bystrica Region
      • Cérová Mts
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    Sudan
     
    • Kassala
      • Gash delta
    		 Hey, M. H. & Easton, A. J. in Geochimica et Cosmochimica Acta 31(10):1789-1790 (1967)
    Switzerland
     
    • Bern
      • Utzenstorf
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 500
    • Ticino (Tessin)
      • Riviera
        • Bellinzona
          • Gorduno
    		Science, 2 April 1999, Vol. 284
    USA
     
    • Kansas
      • Decatur Co.
    		Workshop on Parent-Body and Nebular Modification of Chondritic Materials 4038.pdf http://www.lpi.usra.edu/meetings/chondrite/pdf/4038.pdf
    • Nevada
      • Pershing Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Mexico
      • Santa Fe Co.
        • La Bajada District
    		Minerals of New Mexico 3rd ed.
    Minerals of New Mexico 3rd ed.
    Minerals of New Mexico 3rd ed.
      • Sierra Co.
    		Minerals of New Mexico 3rd ed.
    • New York
      • Orange Co.
        • Monroe Township
          • Lake Mombasha
    		Lupulescu, Marian: Rocks& Min. -- May/June 2008
    • Texas
      • Lubbock Co.
    		Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.
    • Washington
      • Clark Co.
        • Washougal
    		Cannon, B. (1975): Minerals of Washington, p.85
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.