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Clinopyroxene Subgroup

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Augite
Limberg Quarries, Sasbach, Kaiserstuhl, Baden-Württemberg, Germany
© Volker Betz

Show Clinopyroxene Subgroup Photos (2222)



Member of:Pyroxene Group


A subgroup name for monoclinic Pyroxene Group minerals.
Compare Orthopyroxene Subgroup.

The most widespread members include aegirine, augite and diopside.

Classification of Clinopyroxene Subgroup

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Relationship of Clinopyroxene Subgroup to other Species

Member of:Pyroxene Group
Other Members of Group:

- +
Group Members:
Aegirine
NaFe
3+
 
Si
 
2
O
 
6
Augite
(Ca,Na)(Mg,Fe
2+
 
,Al,Fe
3+
 
,Ti)[(Si,Al)
 
2
O
 
6
]
Clinoenstatite
MgSiO
 
3
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

Other Names for Clinopyroxene Subgroup

Synonyms:
ClinopyroxenePolyaugite
Other Languages:
German:Klinopyroxen
Polyaugit
Simplified Chinese:单斜辉石
Spanish:Polyaugita

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 Clinopyroxene Subgroup

Reference List:

- +
Hess, H.H. (1949), Chemical composition and optical properties of common clinopyroxenes American Mineralogist: 34: 621-666.

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.

Hollister, L.S. and Gancarz, A. (1971) Compositional sector-zoning in clinopyroxene from the Narce area, Italy. American Mineralogist: 56: 959-979.

Fleet, M.E. (1975c) Growth habits of clinopyroxene. Canadian Mineralogist: 13: 336-341.

Newton, R.C., Charlu, T.V., and Kleppa, O.J. (1977) Thermochemistry of high pressure garnets and clinopyroxenes in the system CaO-MgO-Al2O3-SiO2. Geochimica et Cosmochimica Acta: 41: 369-377.

McCallister, R.H. (1978), The coarsening kinetics associated with exsolution in an iron-free clinopyroxene: Contributions to Mineralogy and Petrology: 65: 327-331.

Nord, G.L., & R.H. McCallister (1979), Kinetics and mechanisms of decomposition in Wo25En31Fs44 clinopyroxene: Geological Society of America, Abstracts with program: 11: 488.

Grove, T.L. (1982), Use of exsolution lamellae in lunar clinopyroxenes as cooling rate speedometers: an experimental calibration: American Mineralogist: 67: 251-268.

Morimoto, N. (1988): Nomenclature of Pyroxenes. Am. Mineral. 73, 1123-1133.

Harlow, G.E. and Veblen, D.R. (1991) Potassium in clinopyroxene inclusions from diamonds. Science: 251: 652-655.

Edgar, A.D. and Vukadinovic, D. (1993) Potassium-rich clinopyroxene in the mantle: an experimental investigation of K-rich lamproite up to 60 kbar. Geochimica et Cosmochimica Acta: 57: 563-5072.

Webb, S.L. and Jackson, I. (1993) The pressure dependence of the elastic moduli of single-crystal orthopyroxene (Mg0.8Fe0.2)SiO3. European Journal of Mineralogy: 5: 1111-1119.

Weinbruch, S. & W.F. Müller (1995), Constraints on nthe cooling rates of chondrules from the microstructure of clinopyroxene and plagioclase: Geochimica et Cosmochimica Acta: 59: 3221-3230.

Harlow, G.E. (1997) K in clinopyroxene at high pressure and temperature: an experimental study. American Mineralogist: 82: 259-269.

Hugh-Jones, D.A. (1997) Thermal expansion of MSiO3 and FeSiO3 ortho- and clinopyroxenes. American Mineralogist: 82: 689-696.

Zhang, L., Ahsbahs, H., Hafner, S.S., and Kutoglu, A. (1997) Single-crystal compression and crystal structure of clinopyroxene up to 10 GPa. American Mineralogist: 82: 245-258.

Arlt, T. and Angel, R. (2000) Displacive phase transitions in C-centered clinopyroxenes: spodumene, LiScSi2O6, and ZnSiO3. Physics and Chemistry of Minerals: 27: 719-731.

Arlt, T., Kunz, M., Stolz, J., Armbruster, T., and Angel, R. (2000) P-T-X data on P2 1/c-clinopyroxenes and their displacive phase transitions Contributions to Mineralogy and Petrology: 138: 35-45.

Boffa Ballaran, T., Carpenter, M.A., and Ross, N.L. (2001) Infrared powder-absorption spectroscopy of Ca-free P21/c clinopyroxenes. Mineralogical Magazine: 65: 339-350.

Chudinovskikh, L.T., Zharikov, V.A., Ishbulatov, R.A., and Matveev, Yu.A. (2001) On the mechanism of incorporation of ultra-high amounts of potassium into clinopyroxene at high pressure. Doklady Rossikoi Akademii Nauk. Earth Sciences: 380: 1-4.

Weinbruch, S., W.F. Müller & R.H. Hewins (2001), A transmission electron microscope study of exsolution and coarsening in iron-bearing clinopyroxene fro m synthetic analogues of chondrules: Meteoritics and Planetary Science: 36: 1237-1248.

Bindi, L., Safonov, O.G., Litvin, Y.A., Perchuk, L.L., and menchetti, S. (2002) Ultrahigh potassium content in the clinopyroxene structure: an X-ray single-crystal study. European Journal of Mineralogy: 14: 929-934.

Perchuk, L.L., Safonov, O.G., Yapaskurt, V.O., and Barton, J.M., Jr. (2002) Crystal-melt equilibria involving potassium-bearing clinopyroxene as indicators on mantle-derived ultrahigh-potassic liquids: an analytical review. Lithos: 60(3-4): 89-111.

Tribaudino, M. and Nestola, F. (2002) Average and local structure in P2 1/c clinopyroxenes along the join diopside-enstatite (CaMgSi2O6). European Journal of Mineralogy: 14: 549-555.

Bindi, L. Safonov, O.G., Yapasurt, V., Perchuk, L.L., and Menchetti, S. (2003) Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Northern Kazakhstan: occurrence, composition and crystal-chemical characterization. American Mineralogist: 88: 464-468.

Weinbruch, S., S. Styrsa, & W.F. Müller (2003), Exsolution and coarsening in iron-free clinopyroxene during isothermal annealing: Geochimica et Cosmochimica Acta: 67: 5071-5082.

Kung, J., Li, B.S., Uchida, T., Wang, Y.B., Neuville, D., and Liebermann, R.C. (2004) In situ measurements of sound velocities and densities across the orthopyroxene - high-pressure clinopyroxene transition in MgSiO3 at high-pressure. Physics of the Earth and Planetary Interiors: 147: 27-44.

Yang, H. and Konzett, J. (2005) Crystal chemistry of a high-pressure C2/c clinopyroxene with six-coordinated silicon. American Mineralogist: 90: 1223-1226.

Seto, Y., Ohi, S., Shimobayashi, N., Kitamura, M., Miyake, A., Hiroi, Y., and Grantham, G.H. (2006) Clinopyroxene exsolution in wollastonite from Namaqualand granulite, South Africa. American Mineralogist: 91: 446-450.

Internet Links for Clinopyroxene Subgroup

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