Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Pale yellow, ...
4½ - 5½
Named in 1970 by Edward Ching-Te Chao, Jean A. Minkin, Clifford Frondel, Cornelius Klein, Jr., John C. Drake, Louis H. Fuchs, B. Tani, Joseph V. Smith, A. T. Anderson, Paul B. Moore, G. R. Zechman, Jr., Robert James Traill, A. G. Plant, J. A. V. Douglas, and Michael R. Dence for the mineral's iron-rich relationship to pyroxmangite.
Isostructural with:

Classification of Pyroxferroite


9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
6 : Single-Width Unbranched Chains, W=1 with chains P=7

14 : Silicates not Containing Aluminum
22 : Silicates of Fe and Ca

Physical Properties of Pyroxferroite

Pale yellow, orange-yellow, yellow, light brown
Hardness (Mohs):
4½ - 5½

Optical Data of Pyroxferroite

Biaxial (+)
RI values:
nα = 1.746 - 1.756 nβ = 1.750 - 1.758 nγ = 1.764 - 1.768
Measured: 30° to 40°, Calculated: 50° to 58°
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r < v marked

Chemical Properties of Pyroxferroite

IMA Formula:
Elements listed in formula:
Common Impurities:

Crystallography of Pyroxferroite

Crystal System:
Cell Parameters:
a = 6.62 Å, b = 7.55 Å, c = 17.38 Å
α = 144.26°, β = 82.68°, γ = 94.75°
a:b:c = 0.877 : 1 : 2.302
Unit Cell Volume:
V 502.94 ų (Calculated from Unit Cell)

Type Occurrence of Pyroxferroite

Relationship of Pyroxferroite to other Species

Forms a series with Pyroxmangite (see here)
14.22.3 Ferro-akermaniteCa2FeSi2O7
14.22.8Julgoldite-(Fe2+)Ca2Fe2+Fe23+(Si2O7)(SiO4)(OH)2 · H2O

Other Names for Pyroxferroite

Name in Other Languages:
Simplified Chinese:三斜铁辉石

Other Information

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

References for Pyroxferroite

Reference List:
Edward Ching-Te Chao, J. A. Minkin, Clifford Frondel, Cornelius Klein, Jr., J. C. Drake, L. Fuchs, B. Tani, Joseph V. Smith, A. T. Anderson, Paul B. Moore, G. R. Zechman, Jr., R. J, Traill, A. G. Plant, J. A. V. Douglas, and M. R. Dence (1970) American Mineralogist: 55: 2137.

Geochemica et Cosmochimica Acta: 34(1): 65-79.

Burnham, C. (1971) The crystal structure of pyroxferroite from Mare Tranquilitatis. Supplement to Geochemica et Cosmochimica Acta: 34(2): 47-57.

Nikischer, Tony and Joe Orosz (2007) Lunar Mineral Found at Franklin, Sussex Co., New Jersey. Mineral News: 23(8): 1, 2, 9, 14.

Internet Links for Pyroxferroite URL:
Please feel free to link to this page.

Localities for Pyroxferroite

This 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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • Eastern Antarctica
    • Victoria Land
      • Elephant Morraine
McSween Jr., HY & Treiman, AH (1998) Martian Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 6: 1-53: Mineralogical Society of America, Washington, DC, USA.
McSween Jr., H.Y. & Treiman, A.H. (1998) Martian Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 6: 1-53: Mineralogical Society of America, Washington, DC, USA.; Aramovich, C. J., Herd, C. D. K. & Papike, J. J. (2001) Possible Causes for Late-Stage Reaction Textures Associated with Pyroxferroite and Metastable Pyroxenes in the Basaltic Martian Meteorites (abstract): 32nd Annual Lunar and Planetary Science Conference, abstract#1003. (Mar 2001)
  • Queensland
    • McKinlay Shire
      • McKinlay
USGS Open-File Report 2009-1252 Sediment-hosted zinc-lead deposits of the world - Database and grade and tonnage models
  • Eastern Finland Region
    • Kuopio
      • Rautalampi
Ahven, Marja (2012) Rautalammin Kiviniemen granaattipitoinen ferrogabbro. Pro gradu tutkielma. Geotieteiden ja maantieteen laitos, Geologian osasto, Helsingin yliopisto.
  • Western and Inner Finland Region
    • Lapua
Bulletin de la Commission Geologique de Finlande 115; 387-400, 1936
    • Seinäjoki
Mancini, F., Alviola, R., Marshall, B., Satoh, H., & Papunen, H. (2000). The manganese silicate rocks of the early Proterozoic Vittinki group, southwestern Finland: Metamorphic grade and genetic interpretations. The Canadian Mineralogist, 38(5), 1103-1124.
Heikkilä, Pasi 2003. Vittinki-ryhmän metaserttien geologia ja mineralogia Etelä-Pohjanmaalla. Pro gradu, matemaattis-luonnontieteellinen tiedekunta, Geologian laitos. Helsingin Yliopisto.
  • Rhineland-Palatinate
    • Eifel
      • Mayen
        • Ettringen
          • Bellerberg volcano
[Blass, G., Graf, H.W., Neufunde von bekannten Fundorten (20), Mineralien-Welt 9/1, 45, 1998] [A. Wittern: Mineralfundorte in Deutschland, Schweizerbart (Stuttgart), 2001]
  • Honshu Island
    • Kinki Region
      • Kyoto Prefecture
        • Kyotango City
Masutomi Museum specimens (Kyoto)
Yamada et al (1980), Chigaku Kenkyu: 31: 205-222.
        • Naka-gun
          • Mineyama-cho
Alfredo Petrov - private communication (2008)
  • Dhofar Governorate (Al Janubiyah Province)
Taylor, L. A., Nazarov, M. A., Demidova, S. I., & Patchen, A. D. (2001). Dhofar 287: A new lunar mare basalt from Oman. Meteoritics and Planetary Science Supplement, 36, 204.
Yukio, I., Makoto, K., Hiroshi, T., Gen, S., Kita, N., Yuichi, M., ... & Gerlind, D. (2006). Petrology of a new basaltic shergottite: Dhofar 378. Antarctic Meteorite Research, 19, 20-44.
  • Maramureș Co.; Hîrtopanu, P. (2006) One Hundred Minerals For One Hundred Years (dedicated To The Centennial Of The Geological Institute Of Romania) Acta Mineralogica-Petrographica, Abstract Series 5, Szeged, p38
  • Dalarna
    • Smedjebacken
Holtstam, D. (2001): Pyroxferroit, ett månmineral från Väster Silvberg, Dalarna. Litiofilen. 18(2), 23-25
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Nikischer, Tony and Joe Orosz (2007) Lunar Mineral Found at Franklin, Sussex Co., New Jersey. Mineral News: 23(8): 1, 2, 9, 14.
  • South Carolina
    • Anderson Co.
Nikischer, Tony and Joe Orosz (2007) Lunar Mineral Found at Franklin, Sussex Co., New Jersey. Mineral News: 23(8): 1, 2, 9, 14.
The Moon (TL)
Geochemica et Cosmochimica Acta: 34(1): 65-79
  • Taurus-Littrow Valley
Longhi, J., Walker, D., Grove, T. L., Stolper, E. M., & Hays, J. F. (1974) The petrology of the Apollo 17 mare basalts. In: Lunar Science Conference, 5th, Houston, Tex., March 18-22, 1974, Proceedings. Volume 1. (A75-39540 19-91) New York, Pergamon Press, Inc., 1974, p. 447-469.
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 21, 2017 05:46:47 Page generated: July 17, 2017 14:57:12
Go to top of page