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Clinoenstatite

A valid IMA mineral species - grandfathered

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Photos of Clinoenstatite (7)Discuss Clinoenstatite

Clinoenstatite Gallery Search Photos of Clinoenstatite

Edit Clinoenstatite Add Synonym Edit CIF structures Clear Cache

Clinoenstatite

Dordogne river alluvial deposits, Avèze, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Clinoenstatite

Burande stream alluvial deposits, Larodde, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Clinoenstatite

Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Clinoenstatite

Dordogne river alluvial deposits, Avèze, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Clinoenstatite

Burande stream alluvial deposits, Larodde, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Clinoenstatite

Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Clinoenstatite

Dordogne river alluvial deposits, Avèze, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Clinoenstatite

Burande stream alluvial deposits, Larodde, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

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About ClinoenstatiteHide

Formula:

MgSiO₃

Colour:

Colourless, greenish yellow, yellowish brown, green-brown

Lustre:

Vitreous

Hardness:

5 - 6

Specific Gravity:

3.210 (Calculated)

Crystal System:

Monoclinic

Member of:

Clinopyroxene Subgroup > Pyroxene Group

Name:

Named for being the monoclinic polymorph of enstatite.

Polymorph of:

Akimotoite, Bridgmanite, Enstatite, 'Unnamed (Mg silicate tetragonal garnet)'

Isostructural with:

Ferrosilite

This page provides mineralogical data about Clinoenstatite.

Unique IdentifiersHide

Mindat ID:

1072

Long-form identifier:

mindat:1:1:1072:2

Classification of ClinoenstatiteHide

Clinoenstatite and its relation to other pyroxenes (after Morimoto et al., 1989)

Previous petrological nomenclature of clinopyroxenes from basaltic magmas (after Poldervaart & Hess, 1951)

IMA Classification of ClinoenstatiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

First published:

1906

Strunz-mindat (2026):

9.DA.10

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si₂O₆; pyroxene family

Dana 8th ed.:

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference for Standard
Cen	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Cen	Kretz (1983)	Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
Cen	Siivolam & Schmid (2007)	Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
Cen	Whitney & Evans (2010)	Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371

Physical Properties of ClinoenstatiteHide

Lustre:

Vitreous

Transparency:

Transparent, Translucent

Colour:

Colourless, greenish yellow, yellowish brown, green-brown

Comment:

Colorless in thin section.

Streak:

White

Hardness:

5 - 6 on Mohs scale

Cleavage:

Distinct/Good
Good on {110}; (110) ∧ (110) ≃91°.

Comment:

Tenacity is likely brittle, by analogy to enstatite.

Density:

3.210 g/cm³ (Calculated)

Optical Data of ClinoenstatiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.651 n_β = 1.654 n_γ = 1.66

2V:

Measured: 53.5°

Max. Birefringence:

δ = 0.009
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Interference Figure:

This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.

Thickness: 30 µm

Stage rotation: 0°

Dispersion:

strong

Optical Extinction:

X = b; Z ∧ c = 20-22°.

Chemistry of ClinoenstatiteHide

Mindat Formula:

MgSiO₃

Element Weights:

Element	% weight
O	47.812 %
Si	27.977 %
Mg	24.211 %

Calculated from ideal end-member formula.

Elements listed:

Mg, O, Si - search for minerals with similar chemistry

Common Impurities:

Ti,Al,Cr,Fe,Mn,Ca,Na

Crystallography of ClinoenstatiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

Setting:

P2₁/c

Cell Parameters:

a = 9.6065 Å, b = 8.8146 Å, c = 5.1688 Å
β = 108.335°

Ratio:

a:b:c = 1.09 : 1 : 0.586

Unit Cell V:

415.46 Å³ (Calculated from Unit Cell)

Twinning:

Polysynthetic on {100}.

Comment:

Synthetic sample.

Crystal StructureHide

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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

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CIF File Best | x | y | z | a | b | c

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
0002805	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002804	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002803	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002802	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002801	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002800	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0002799	Clinoenstatite	Tribaudino M, Nestola F, Camara F, Domeneghetti M C (2002) The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior American Mineralogist 87 648-657	2002	synthetic	293
0010589	Clinoenstatite	Morimoto N, Appleman D E, Evans H T (1960) The crystal structures of clinoenstatite and pigeonite Zeitschrift fur Kristallographie 114 120-147	1960	Bishopville, South Carolina meteorite, heat-treated	293
0007357	Clinoenstatite	Ohashi Y (1984) Polysynthetically-twinned structures of enstatite and wollastonite Physics and Chemistry of Minerals 10 217-229	1984		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Clinoenstatite'
loop_
_publ_author_name
'Tribaudino M'
'Nestola F'
'Camara F'
'Domeneghetti M C'
_journal_name_full 'American Mineralogist'
_journal_volume 87 
_journal_year 2002
_journal_page_first 648
_journal_page_last 657
_publ_section_title
;
 The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene
 (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior
 Sample: dien2, T = 1000 deg C
;
_database_code_amcsd 0002805
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'O6 Si2 Mg1.85 Ca.15'
_cell_length_a 9.752
_cell_length_b 8.949
_cell_length_c 5.255
_cell_angle_alpha 90
_cell_angle_beta 108.84
_cell_angle_gamma 90
_cell_volume 434.037
_exptl_crystal_density_diffrn      3.109
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
O1A   0.86862   0.33890   0.17197   1.00000   0.02075
O1B   0.37311   0.84175   0.13310   1.00000   0.02136
O2A   0.12226   0.49844   0.33087   1.00000   0.02613
O2B   0.62858   0.98692   0.37344   1.00000   0.03082
O3A   0.10324   0.26674   0.58704   1.00000   0.02842
O3B   0.60230   0.71138   0.48337   1.00000   0.02867
SiA   0.04317   0.34038   0.28182   1.00000   0.01524
SiB   0.54817   0.83878   0.24048   1.00000   0.01576
Mg1   0.25048   0.65186   0.23090   1.00000   0.02196
Mg2   0.25426   0.01793   0.22864   0.85000   0.03481
Ca2   0.25426   0.01793   0.22864   0.15000   0.03481
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
O1A 0.01655 0.02735 0.01874 0.00345 0.00625 0.00100
O1B 0.01986 0.02434 0.02009 0.00202 0.00674 0.00018
O2A 0.02956 0.01942 0.03102 -0.00833 0.01199 -0.00410
O2B 0.03185 0.02848 0.03628 -0.01373 0.01675 -0.00999
O3A 0.02092 0.03935 0.02482 0.00030 0.00715 0.01704
O3B 0.02675 0.03591 0.02514 0.00777 0.01085 0.01352
SiA 0.01501 0.01670 0.01515 -0.00186 0.00645 -0.00167
SiB 0.01547 0.01633 0.01619 -0.00176 0.00609 -0.00152
Mg1 0.02398 0.02230 0.01975 -0.00015 0.00728 0.00060
Mg2 0.03785 0.04023 0.02357 0.00768 0.00606 0.00239
Ca2 0.03785 0.04023 0.02357 0.00768 0.00606 0.00239

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.873 Å	(100)
2.976 Å	(75)
3.17 Å	(30)
2.452 Å	(30)
2.115 Å	(30)
3.28 Å	(25)
2.518 Å	(18)

Comments:

Synthetic

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 1: Primary nebular phases	4.567-4.561
4 : Primary chondrule phases	4.566–4.561
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
6 : Secondary asteroid phases	4.566-4.560
Stage 3a: Earth’s earliest Hadean crust	>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
Stage 4b: Highly evolved igneous rocks	>3.0
36 : Carbonatites, kimberlites, and related igneous rocks

Geological Setting:

As phenocrysts, likely inverted from "protoenstatite," in high-magnesium, non-feldspathic andesites. Exsolved in diopside in ultramafic rocks and in enstatite in high-grade metamorphic hornfelses. An essential constituent of chondrite and achondrite meteorites, likely formed by stress.

Synonyms of ClinoenstatiteHide

Low-calcium pyroxene (in part)

Other Language Names for ClinoenstatiteHide

Dutch:Clinoenstatiet

German:Klinoenstatit
Clinoenstatit
Klinoenstenit

Japanese:単斜頑火輝石

Russian:Клиноэнстатит

Simplified Chinese:斜顽辉石
斜顽火辉石

Spanish:Clinoenstatita

Relationship of Clinoenstatite to other SpeciesHide

Member of:

Clinopyroxene Subgroup > Pyroxene Group

Other Members of Clinopyroxene Subgroup:

Aegirine	NaFe³⁺Si₂O₆	Mon. 2/m : B2/b
Aegirine-augite	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m : B2/b
Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : B2/b
Burnettite	CaVAlSiO₆	Mon. 2/m : B2/b
Clinoferrosilite	Fe²⁺₂Si₂O₆	Mon. 2/m : P2₁/b
Colomeraite	NaTi³⁺Si₂O₆	Mon. 2/m : B2/b
Davisite	CaScAlSiO₆	Mon. 2/m : B2/b
Diopside	CaMgSi₂O₆	Mon. 2/m : B2/b
Esseneite	CaFe³⁺[AlSiO₆]	Mon. 2/m : B2/b
Grossmanite	CaTi³⁺ AlSiO₆	Mon. 2/m : B2/b
Hedenbergite	CaFe²⁺Si₂O₆	Mon. 2/m : B2/b
Jadeite	Na(Al,Fe³⁺)Si₂O₆	Mon. 2/m : B2/b
Jervisite	NaSc³⁺Si₂O₆	Mon. 2/m : B2/b
Johannsenite	CaMn²⁺Si₂O₆	Mon. 2/m : B2/b
Kanoite	Mn²⁺MgSi₂O₆	Mon. 2/m : P2₁/b
Kosmochlor	NaCrSi₂O₆	Mon. 2/m : B2/b
Kushiroite	CaAlAlSiO₆	Mon. 2/m : B2/b
Namansilite	NaMn³⁺Si₂O₆	Mon. 2/m : B2/b
Natalyite	NaV³⁺Si₂O₆	Mon. 2/m : B2/b
Omphacite	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m
Petedunnite	CaZnSi₂O₆	Mon. 2/m : B2/b
Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : P2₁/b
Ryabchikovite	CuMgSi₂O₆	Mon. 2/m : P2₁/b
Spodumene	LiAlSi₂O₆	Mon. 2/m : B2/b
Tissintite	(Ca,◻)AlSi₂O₆	Mon. 2/m : B2/b
'UM2003-36-SiO:CaNa'	NaCrSi₂O₆ - CaMgSi₂O₆	Mon. 2/m : B2/b

Common AssociatesHide

Associations Based on Photo Data:

3 photos of Clinoenstatite associated with Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
3 photos of Clinoenstatite associated with Ruizite	Ca₂Mn³⁺₂[Si₄O₁₁(OH)₂](OH)₂ · 2H₂O
3 photos of Clinoenstatite associated with 'Rhodic Ferroplatinum'	(Pt,Rh,Fe)
3 photos of Clinoenstatite associated with Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
3 photos of Clinoenstatite associated with 'Glass'
2 photos of Clinoenstatite associated with Kenyaite	Na₂Si₂₂O₄₁(OH)₈ · 6H₂O
2 photos of Clinoenstatite associated with 'Anorthoclase'	(Na,K)AlSi₃O₈
2 photos of Clinoenstatite associated with Troilite	FeS
2 photos of Clinoenstatite associated with Povondraite	NaFe³⁺₃(Mg₂Fe³⁺₄)(Si₆O₁₈)(BO₃)₃(OH)₃O
2 photos of Clinoenstatite associated with Microcline	K(AlSi₃O₈)

Related Minerals - Strunz-mindat Grouping Hide

9.DA.	Colomeraite	NaTi³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.	Protoenstatite	Mg₂Si₂O₆	Orth. mmm(2/m2/m2/m) : Pbcn
9.DA.	Ryabchikovite	CuMgSi₂O₆	Mon. 2/m : P2₁/b
9.DA.05	Donpeacorite	Mn²⁺MgSi₂O₆	Orth. mmm(2/m2/m2/m) : Pbca
9.DA.05	Enstatite	Mg₂Si₂O₆	Orth. mmm(2/m2/m2/m) : Pbca
9.DA.05	Ferrosilite	Fe²⁺₂Si₂O₆	Orth. mmm(2/m2/m2/m) : Pbca
9.DA.10	Clinoferrosilite	Fe²⁺₂Si₂O₆	Mon. 2/m : P2₁/b
9.DA.10	Kanoite	Mn²⁺MgSi₂O₆	Mon. 2/m : P2₁/b
9.DA.10	Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : P2₁/b
9.DA.15	Grossmanite	CaTi³⁺ AlSiO₆	Mon. 2/m : B2/b
9.DA.15	Diopside	CaMgSi₂O₆	Mon. 2/m : B2/b
9.DA.15 va	'Jeffersonite'	Ca(Mn,Zn,Fe)Si₂O₆
9.DA.15	Hedenbergite	CaFe²⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Johannsenite	CaMn²⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Petedunnite	CaZnSi₂O₆	Mon. 2/m : B2/b
9.DA.15	Esseneite	CaFe³⁺[AlSiO₆]	Mon. 2/m : B2/b
9.DA.15	Kushiroite	CaAlAlSiO₆	Mon. 2/m : B2/b
9.DA.15	Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Davisite	CaScAlSiO₆	Mon. 2/m : B2/b
9.DA.20	Aegirine-augite	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m : B2/b
9.DA.20	Omphacite	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m
9.DA.25	Jadeite	Na(Al,Fe³⁺)Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Namansilite	NaMn³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Natalyite	NaV³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Aegirine	NaFe³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Jervisite	NaSc³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Tissintite	(Ca,◻)AlSi₂O₆	Mon. 2/m : B2/b
9.DA.25	Kosmochlor	NaCrSi₂O₆	Mon. 2/m : B2/b
9.DA.30	Spodumene	LiAlSi₂O₆	Mon. 2/m : B2/b
9.DA.35	Hiroseite	FeSiO₃	Orth. mmm(2/m2/m2/m) : Pnma

Other InformationHide

Health Risks:

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

Internet Links for ClinoenstatiteHide

mindat.org URL:

https://www.mindat.org/min-1072.html
Please feel free to link to this page.

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External Links:

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Look for Clinoenstatite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for ClinoenstatiteHide

Reference List:

Wahl, W. (1906) Zur Nomenklatur. in Die Enstatitaugite, (PhD dissertation), 151 pages, University of Helsinki (Finland), 137-141.

Lacroix, A. (1906) La météorite de Saint-Christophe-la-Chartreuse rocheservière (vendée) 5 Novembre 1841. Bulletin de la Société des Sciences Naturelles de l´ouest de la France, 6, 81-112.

Poldervaart, A., Hess, H. H. (1951) Pyroxenes in the Crystallization of Basaltic Magma. The Journal of Geology, 59 (5) 472-489 doi:10.1086/625891

Kuno, H., Hess, H. H. (1953) Unit cell dimensions of clinoenstatite and pigeonite in relation to other common clinopyroxenes. American Journal of Science, 251 (10) 741-752 doi:10.2475/ajs.251.10.741

Morimoto, Nobuo, Appleman, Daniel E., Evans., Howard T. (1960) The crystal structures of clinoenstatite and pigeonite. Zeitschrift für Kristallographie, 114 (1). 120-147 doi:10.1524/zkri.1960.114.1-6.120

Trommsdorff, Volkmar, Wenk, Hans -Rudolf (1968) Terrestrial metamorphic clinoenstatite in kinks of bronzite crystals. Contributions to Mineralogy and Petrology, 19 (2) 158-168 doi:10.1007/bf00635486

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

Smyth, Joseph R. (1974) The high temperature crystal chemistry of clinohypersthene. American Mineralogist, 59 (9-10) 1069-1082

Morimoto, N., Fabries, J., Ferguson, A. K., Ginzburg, I. V., Ross, M., Seifert, F. A., Zussman, J., Aoki, K., Gottardi, G. (1988) Nomenclature of Pyroxenes. Mineralogical Magazine, 52 (367) 535-550 doi:10.1180/minmag.1988.052.367.15

Morimoto, N. (1989) Nomenclature of pyroxenes. The Canadian Mineralogist: 27: 143-156.

Bozhilov, K. N. (1999) Clinoenstatite in Alpe Arami Peridotite: Additional Evidence of Very High Pressure. Science, 284 (5411). 128-132 doi:10.1126/science.284.5411.128

(2001) Clinoenstatite. Handbook of Mineralogy. Mineralogical Society of America

Tribaudino, Mario, Prencipe, Mauro, Nestola, Fabrizio, Hanfland, Michael (2001) A P2₁/c-C2/c high-pressure phase transition in Ca_0.5Mg_1.5Si₂O₆ clinopyroxene. American Mineralogist, 86 (7-8). 807-813 doi:10.2138/am-2001-0704

Tribaudino, Mario, Nestola, Fabrizio, Cámara, Fernando, Domeneghetti, Maria Chiara (2002) The high-temperature P2₁/c-C2/c phase transition in Fe-free pyroxene (Ca_0.15Mg_1.85Si₂O₆): Structural and thermodynamic behavior. American Mineralogist, 87 (5-6). 648-657 doi:10.2138/am-2002-5-607

Localities for ClinoenstatiteHide

Showing 116 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Algeria
Bordj Badji Mokhtar Province Bordj Badji Mokhtar District Bordj Badji Mokhtar ⓘ Ilafegh 009 meteorite	McCoy et al. (1992)
ⓘ Ouallen meteorite	Oba et al. (1998)

Antarctica

East Antarctica Buckley Island quadrangle Lewis Cliff ⓘ Lewis Cliff 87223 meteorite	Lindstrom et al. (1993)
ⓘ Lewis Cliff 87232 meteorite	Brearley et al. (1998)
ⓘ MacAlpine Hills 88136 meteorite	Lindstrom et al. (1990)
Victoria Land Allan Hills ⓘ Allan Hills 83010 meteorite	Meteorite Working Group (1985)
ⓘ Allan Hills A77307 meteorite	Brian Mason (1978)
Elephant Moraine ⓘ Elephant Moraine 83213 meteorite	Meteorite Working Group (1985)
Queen Alexandra Range ⓘ Queen Alexandra Range 94204 meteorite	Enstatite +1 other reference

Australia
Queensland Barcoo Shire Windorah Tenham Station ⓘ Tenham meteorite	Tomioka et al. (1997) +3 other references
South Australia City of Adelaide Adelaide ⓘ Adelaide meteorite	Davy et al. (1978)
Pastoral Unincorporated Area Mount Victor Plumbago Station ⓘ Ethiudna Mines
Victoria City of Greater Shepparton Murchison ⓘ Murchison meteorite	Fuchs et al. (1970)
Western Australia Mount Marshall Shire Bencubbin ⓘ Bencubbin meteorite	Horton E. Newsom & Michael J. Drake (1977)
Ngaanyatjarraku Shire West Musgrave Block Wingellina Community (Irrunytju) ⓘ Picrite hill	Trommsdorff et al. (1968)

Austria
Lower Austria Sankt Pölten-Land District Karlstetten Rosenthal ⓘ Marchart quarry ?	Kolitsch et al. (2023)
Styria Südoststeiermark District Kapfenstein ⓘ Kapfensteiner Kogel	Collection of NHM

Azerbaijan
Aghjabadi District Hindarx ⓘ Indarch meteorite	rruff.geo.arizona.edu (n.d.) +2 other references

Bolivia
Cochabamba Chapare Province Alto Chapare mining district Cristalmayu subdistrict Cristalmayu ⓘ Cristalmayu valley	Alfredo Petrov field collected ...

Brazil
Minas Gerais ⓘ Perdões	Jour. of South American Earth Sci. ...

Canada
Alberta Sturgeon County ⓘ Abee meteorite	Mason (1966)
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	RRUFF project specimen R080108.9.

China
Anhui Anqing Yuexi County ⓘ Bixiling complex	T21A-0507 0800h : Clinoenstatite ...
Bozhou Qiaocheng District Xiaoyanzhuang ⓘ Boxian meteorite	Kuiren Wang and Junxin Wang (1987)
Hefei Lujiang Co. ⓘ Lujiang meteorite	Hong et al. (1999)
Guizhou Guiyang Qingzhen County ⓘ Qingzhen meteorite	Daode Wang and Rambaldi (1988)
Jilin Jilin Chuanying District ⓘ Jilin meteorite (Jilin H5 chondrite)	Wankang Huang et al. (1978)
Sichuan Panzhihua Dong District Panzhihua Fe-V-Ti-(PGE) deposit ⓘ Lanjiahuoshan deposit	Gao et al. (2017)

Egypt
New Valley Governorate ⓘ Isna meteorite	Methot et al. (1975)

France
Auvergne-Rhône-Alpes Drôme Nyons Aubres ⓘ Aubres meteorite	Grady et al. (2015)
Puy-de-Dôme Issoire Aurières ⓘ Chevalard stream alluvial deposits	Périnet (n.d.)
Avèze ⓘ Dordogne river alluvial deposits	Périnet (n.d.)
Larodde ⓘ Burande stream alluvial deposits	Périnet (n.d.)
Riom Charbonnières-les-Varennes Beaunit ⓘ Puy Gonnard	Lemanski (n.d.)
Centre-Val de Loire Loir-et-Cher Vendôme Lancé ⓘ Lancé Meteorite	Rhian H. Jones & Adrian J. Brearley. (1994)
Loiret Montargis ⓘ Château-Renard meteorite	Baziotis et al. (2018)
Gien ⓘ Loire river alluvial deposits	Périnet (n.d.)
New Caledonia Northern Province Poya North Népoui ⓘ Boninite outcrop	C. Campiglio et al. +1 other reference
Normandy Manche Avranches Le Teilleul ⓘ Le Teilleul meteorite	Wahl (1952)
Occitanie Haute-Garonne Toulouse Saint-Jory ⓘ Saint-Sauveur meteorite	Mason (1966)

Germany
Rhineland-Palatinate Mayen-Koblenz Vordereifel Ettringen Caspar quarry ⓘ Xenolith CS-034 (Alfredcasparite-bearing xenolith)	in the collection of Christof Schäfer +1 other reference

Greenland
Sermersooq ⓘ Kangerlussuaq Fjord	Kent Brooks et al. (1975)

Hungary
Baranya County Pécs District Gyód ⓘ Gyód boreholes	Kovács et al. (2003)
Veszprém County Tapolca District Uzsa ⓘ Láz Hill mine	Szakáll & Gatter

India
Assam Goalpara District ⓘ Goalpara meteorite	Nakamuta et al. (2013)
Madhya Pradesh Jabalpur Division Chhindwara District ⓘ Semarkona meteorite	Jones (1994)
Odisha Mayurbhanj district Deoli pargana ⓘ Bholghati meteorite	Reid et al. (1990)
Tamil Nadu Krishnagiri District ⓘ Kakangari meteorite	Brearley (1988) +1 other reference
Ramanathapuram district ⓘ Parnallee meteorite	Binns (1970) +1 other reference
Uttar Pradesh Mau District ⓘ Chainpur meteorite	Ruzicka (1990)

Italy
Emilia-Romagna Ferrara Province Cento Renazzo ⓘ Renazzo meteorite	Mason et al. (1962)
Vigarano Mainarda Vigarano Pieve ⓘ Vigarano meteorite (Cariani; Ferrara; Mainardi; Morandi; Parish; Pieve; Vigarano Mainarda; Vigarano Pieve; Vigarno; Vigarvano; Vigavano [NHM cat.])	Abreau et al. (2011)
Metropolitan City of Bologna Fontanelice ⓘ Piancaldoli meteorite	Carapezza et al. (1976)

Japan
Tokyo Metropolis Ogasawara Subprefecture Ogasawara Islands Chichijima Group ⓘ Ani Island (Anijima)	Forrest Cureton specimens
ⓘ Chichi Island (Chichijima)	Wada (1904) +1 other reference
Mukojima Group ⓘ Mukou Island (Muko-jima; Mukou-jima; Mukoo-jima)	Akira Kato (2011)

Kazakhstan
Pavlodar Region Pavlodar District ⓘ Efremovka meteorite	Grady et al. (2015)

Malawi
Central Region Nkhotakota ⓘ Kota-Kota meteorite (Marimba meteorite)	Mason (1966)

Mongolia
Dornogovi Province Erdene District ⓘ Khamaryn– Khural–Khiid combustion metamorphic complex	Savina et al. (2020)
Töv Province ⓘ Tugrug quarry	Peretyazhko et al. (2017)

Morocco
Guelmim-Oued Noun Region Assa-Zag Province Zag Pachalik ⓘ NWA 3009	Specimen from Soenke Stolze and related

Namibia
Hardap Region Gibeon Constituency ⓘ Korra Korrabes meteorite	ASHWAL (2001)

North Macedonia
Kavadarci Municipality Vozarci ⓘ Euronickel smelter slag locality	Đorđević et al. (2024)

Northwest Africa Meteorites
ⓘ Northwest Africa 10214 meteorite (NWA 10214)	Rubin et al. (2016) +1 other reference

Pakistan
Gilgit-Baltistan Astore District ⓘ Astore Valley	Blauwet et al. (2004)
ⓘ ~~Astore~~	Haas (n.d.) +1 other reference
Punjab Province Khushab District ⓘ Adhi Kot meteorite	Mason (1966) +1 other reference

Poland
Lublin Voivodeship Zamość County ⓘ Zaklodzie meteorite	Przylibski et al. (2005)
Łódź Voivodeship Łowicz County ⓘ Łowicz meteorite	Karwowski Ł. 2003: The new ...

Romania
Bistrița-Năsăud County Rodna Valea Vinului ⓘ Valea Vinului Mine	Papp et al. (2005)
Harghita County ⓘ Ditrău Complex	Pál Molnár (2000)
ⓘ Mezö-Madaras meteorite (Fekete; Madaras; Maros; Mesö-Madarasz; Mezoe-Madaras; Weiler [NHM Cat.])	Michel‐Lévy (1988)

Russia
Chukotka Autonomous Okrug Anadyrsky District Iomrautvaam massif ⓘ Khatyrka meteorite	Scientific Report 5:9111 +1 other reference
Kamchatka Krai Milkovsky District Tolbachik Volcanic field Great Fissure eruption (Main Fracture) Northern Breakthrough (North Breach) Second scoria cone ⓘ Arsenatnaya fumarole	Shchipalkina et al. (2020)
Murmansk Oblast Kolsky District ⓘ Tepsi ultrabasic body
Sakha Kobyaysky District ⓘ Kis-kuel deposit	Kostin (2021)
Saratov Oblast ⓘ Saratov meteorite	Semenenko et al. (1992) +1 other reference
Sayan Mountains Il’chir ophiolite belt Ospa–Kitoi massif (Ospin–Kitoi massif) ⓘ Gorlykgol deposit	Tatarinov et al. (2021)

Slovakia
Banská Bystrica Region Lučenec District ⓘ Radzovce	Koděra et al. (1986)
Rimavská Sobota District Hajnáčka ⓘ Hajnáčka sapphire occurrence	Koděra et al. (1986)

South Africa
Western Cape Cape Winelands District Municipality Witzenberg Local Municipality Koue Bokkeveld Mountain ⓘ Koue Bokkeveld meteorite	Miyahara et al. (2008)

Sudan
Kassala Gash delta ⓘ Khor Temiki meteorite	Hey et al. (10)

Sweden
Dalarna County Avesta Folkärna ⓘ Lövsved Mine	Bergström (1959)

Switzerland
Bern Emmental Utzenstorf ⓘ Utzenstorf meteorite	Stalder et al. (1998)
Ticino Bellinzona Bellinzona Gorduno ⓘ Arami Alp	Bozhilov (1999)

USA
California San Bernardino County Trojan ⓘ Dish Hill Crater (Dish Hill; Siberia Hill; Siberia Hill Crater)	Murdoch (1966) +2 other references
Colorado Kit Carson County ⓘ Bethune meteorite	Mason (1966)
Kansas Decatur County ⓘ Leoville meteorite (Leoville CV3 chondrite)	www.lpi.usra.edu (n.d.)
ⓘ Prairie Dog Creek meteorite	Kracher et al. (1984)
Norton County ⓘ Norton County meteorite	Akihiko Okada (1980)
Kentucky Whitley County ⓘ Cumberland Falls meteorite	Alan E. Rubin (2010)
Maryland St. Mary's County ⓘ St. Mary's County meteorite	Noonan et al. (1977)
Nevada Eureka County ⓘ Eureka Mining District	Peter G. Vikre (1998)
Prospect Ridge ⓘ Diamond mine	Peter G. Vikre (1998)
Pershing County ⓘ Nightingale Mining District	Castor et al. (2004)
New Mexico Lea County Jal ⓘ Lea County 002 meteorite	Brearley et al. (1998)
Roosevelt County ⓘ Clovis (no. 1) meteorite	Noonan (1975)
Santa Fe County La Bajada Mining District ⓘ Cavalry Butte	Northrop et al. (1996)
ⓘ Cerro Seguro	Northrop et al. (1996)
ⓘ Cienguilla	Northrop et al. (1996)
Sierra County ⓘ Caballo Mountains Mining District	Northrop et al. (1996)
New York Orange County Town of Monroe Lake Mombasha ⓘ O'Neil Mine	Lupulescu
Northern Mariana Islands ⓘ West Rota Caldera	Leybourne et al. (2026)
Oklahoma Washita County ⓘ Colony meteorite	Rubin et al. (1985)
Oregon Lake County Plush ⓘ Dust Devil Mine	Xu et al. (2017)
Pennsylvania Lebanon County Cornwall Borough (Cornwall) ⓘ Cornwall Mines (Cornwall Iron Mine)	Kearns et al. (2008)
South Carolina Lee County Bishopville ⓘ Bishopville meteorite	Rubin (2015)
Texas Armstrong County ⓘ Happy Canyon meteorite	Olsen et al. (1977)
Grayson County ⓘ Bells meteorite	Davis et al. (1984)
Lubbock County ⓘ Shallowater meteorite	Meteoritics (ISSN 0026-1114)
Terry County ⓘ Brownfield (1937) meteorite	Ferraris et al. (2002)
Washington Clark County Washougal ⓘ Washougal meteorite	Cannon (1975)

Outer Space


The Moon

Mare Fecunditatis ⓘ Luna 16 landing site	Gornostaeva et al. (2012)

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Clinoenstatite

About ClinoenstatiteHide

Unique IdentifiersHide

Classification of ClinoenstatiteHide

IMA Classification of ClinoenstatiteHide

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Physical Properties of ClinoenstatiteHide

Optical Data of ClinoenstatiteHide

Chemistry of ClinoenstatiteHide

Crystallography of ClinoenstatiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Synonyms of ClinoenstatiteHide

Other Language Names for ClinoenstatiteHide

Relationship of Clinoenstatite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

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References for ClinoenstatiteHide

Localities for ClinoenstatiteHide

Locality ListHide

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