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Clinoenstatite

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Big Photo

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

Show Clinoenstatite Photos (6)



Formula:
MgSiO
 
3
System:MonoclinicColour:Colourless, greenish ...
Lustre:VitreousHardness:5 - 6
Member of:Clinopyroxene Subgroup > Pyroxene Group
Dimorph of:Enstatite
Isostructural with:Ferrosilite


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
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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:
MgSiO
 
3
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

Member of:Clinopyroxene Subgroup > Pyroxene Group
Other Members of Group:

- +
Aegirine
NaFe
3+
 
Si
 
2
O
 
6
Augite
(Ca,Na)(Mg,Fe
2+
 
,Al,Fe
3+
 
,Ti)[(Si,Al)
 
2
O
 
6
]
Clinoferrosilite
Fe
2+
 
SiO
 
3
Diopside
CaMgSi
 
2
O
 
6
Esseneite
CaFe
3+
 
[AlSiO
 
6
]
Grossmanite
CaTi
3+
 
 AlSiO
 
6
Hedenbergite
CaFe
2+
 
Si
 
2
O
 
6
Jadeite
Na(Al,Fe
3+
 
)Si
 
2
O
 
6
Jervisite
(Na,Ca,Fe
2+
 
)(Sc,Mg,Fe
2+
 
)Si
 
2
O
 
6
Johannsenite
CaMn
2+
 
Si
 
2
O
 
6
Kanoite
Mn
2+
 
(Mg,Mn
2+
 
)Si
 
2
O
 
6
Kosmochlor
NaCrSi
 
2
O
 
6
Kushiroite
CaAl[AlSiO
 
6
]
Namansilite
NaMn
3+
 
Si
 
2
O
 
6
Natalyite
Na(V
3+
 
,Cr)Si
 
2
O
 
6
Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)Si
 
2
O
 
6
Pigeonite
(Mg,Fe
2+
 
,Ca)(Mg,Fe
2+
 
)Si
 
2
O
 
6
Spodumene
LiAlSi
 
2
O
 
6
Related Minerals - Nickel-Strunz Grouping):

- +
9.DA.05Donpeacorite
(Mn
2+
 
,Mg)Mg[SiO
 
3
]
 
2
9.DA.05Enstatite
MgSiO
 
3
9.DA.05Ferrosilite
FeSiO
 
3
9.DA.10Clinoferrosilite
Fe
2+
 
SiO
 
3
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
CaMgSi
 
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.15Kushiroite
CaAl[AlSiO
 
6
]
9.DA.15Grossmanite
CaTi
3+
 
 AlSiO
 
6
9.DA.20Aegirine-augite
(Na,Ca)(Fe
3+
 
,Fe
2+
 
,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
NaCrSi
 
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
LiAlSi
 
2
O
 
6
Related Minerals - Hey's Index Grouping:

- +
14.4.1Forsterite
Mg
 
2
SiO
 
4
14.4.2Enstatite
MgSiO
 
3
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
(Si
 
2
O
 
5
)(OH)
 
4
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-x
(Si
 
4
O
 
10
)(OH)
 
2
14.4.15Antigorite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
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

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Clinoenstatite details from Handbook of Mineralogy (PDF)
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    • Localities for Clinoenstatite

    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.
    Hide Locality List
    (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
    Australia
     
    • Queensland
      • Charters Towers Region
        • 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 Station
    		No reference listed
    • Western Australia
      • Wyngelina
    		Trommsdorff, V., and Wenk, H.-R. (1968): Contributions to Mineralogy and Petrology 19, 158-168.
    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
     
    • 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
      • Bozhou Prefecture
        • Qiaocheng District
          • Xiaoyanzhuang
    		Kuiren Wang and Junxin Wang (1987): Acta Mineralogica Sinica 7(3), 238-244
    • Guizhou Province
      • Anshun Prefecture
        • Pingba Co.
    		Daode Wang and Rambaldi, E.R. (1988): Acta Mineralogica Sinica 8(4), 324-335
    • Jilin Province (Manchuria; Dongbei Region)
      • Jilin Prefecture
        • Jilin City
    		Wankang Huang, Yingwen Xie, and Jingming Pan (1978): Geochimica 7(1), 25-34
    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.
      • Balaton Uplands
        • Tapolcai Basin
          • Uzsa (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; Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 2011).
    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.
    Outer Space
    European Journal of Mineralogy; December; v. 19; no. 6; p. 771-782; DOI: 10.1127/0935-1221/2007/0019-1766
    Pakistan
     
    • Northern Areas
      • Astor District (Astore District)
    		P Haas collection
    Romania
     
    • Harghita Co.
    		Pál-Molnár (2000)
    • Mureş Co.
    Slovakia
     
    • Banská Bystrica Region
      • Lučenec Co.
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
      • Rimavská Sobota Co.
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    Sudan
     
    • Kassala Wilayah
      • 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
     
    • California
      • San Bernardino Co.
        • Amboy
    		Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 307; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 386.
    • 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.
        • Town of Monroe
          • 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
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 9th Jul 2011 04:38:42
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