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Pyroxferroite

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Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite, etc.

Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite, etc.

Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Pyroxferroite

Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Formula:
(Fe,Mn,Ca)SiO3
System:
Triclinic
Colour:
Pale yellow, ...
Hardness:
4½ - 5½
Name:
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:
Pyroxmangite
Pyroxferroite-Pyroxmangite Series


Classification of Pyroxferroite

IMA status:
Approved
Strunz 8th ed.:
8/F.31-10
Nickel-Strunz 10th (pending) ed.:
9.DO.05

9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
Dana 8th ed.:
65.6.1.2

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
6 : Single-Width Unbranched Chains, W=1 with chains P=7
Hey's CIM Ref.:
14.22.2

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

Physical Properties of Pyroxferroite

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

Optical Data of Pyroxferroite

Type:
Biaxial (+)
RI values:
nα = 1.746 - 1.756 nβ = 1.750 - 1.758 nγ = 1.764 - 1.768
2V:
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:
High
Dispersion:
r < v marked

Chemical Properties of Pyroxferroite

Formula:
(Fe,Mn,Ca)SiO3
IMA Formula:
Fe2+SiO3
Elements listed in formula:
Ca, Fe, Mn, O, Si - search for minerals with similar chemistry
Common Impurities:
Ti,Al,Mg,Na

Crystallography of Pyroxferroite

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

Type Occurrence of Pyroxferroite

Type Locality:
ⓘ Mare Tranquillitatis (Sea of Tranquility), The Moon

Relationship of Pyroxferroite to other Species

Series:
Forms a series with Pyroxmangite (see here)
Related Minerals - Nickel-Strunz Grouping):
9.DO.05PyroxmangiteMnSiO3
9.DO.10PellyiteBa2Ca(Fe,Mg)2Si6O17
9.DO.15Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
9.DO.15Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
9.DO.15Ferronordite-(Ce)Na3SrCeFe2+Si6O17
9.DO.15Manganonordite-(Ce)Na3SrCeMn2+Si6O17
9.DO.15Ferronordite-(La)Na3Sr(La,Ce)FeSi6O17
9.DO.20AlamositePbSiO3
9.DO.25LiebauiteCa3Cu5Si9O26
Related Minerals - Hey's Index Grouping:
14.22.1HedenbergiteCaFe2+Si2O6
14.22.3 Ferro-akermaniteCa2FeSi2O7
14.22.4KirschsteiniteCaFe2+SiO4
14.22.5TungusiteCa4Fe2Si6O15(OH)6
14.22.6Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
14.22.7IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
14.22.8Julgoldite-(Fe2+)Ca2Fe2+Fe23+(Si2O7)(SiO4)(OH)2 · H2O
14.22.9AndraditeCa3Fe23+(SiO4)3

Other Names for Pyroxferroite

Synonyms:

IMA1970-001

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

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https://www.mindat.org/min-3326.html
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    • 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.
    Antarctica
     
    • 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)
    Australia
     
    • Queensland
      • McKinlay Shire
        • McKinlay
    		USGS Open-File Report 2009-1252 Sediment-hosted zinc-lead deposits of the world - Database and grade and tonnage models
    Finland
     
    • 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.
    Germany
     
    • 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]
    Japan
     
    • 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)
    Oman
     
    • 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.
    Romania
     
    • Maramureș Co.
    		http://minerals-of-the-carpathians.eu; 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
    Sweden
     
    • Dalarna
      • Smedjebacken
    		Holtstam, D. (2001): Pyroxferroit, ett månmineral från Väster Silvberg, Dalarna. Litiofilen. 18(2), 23-25
    USA
     
    • 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  
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