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Clinoferrosilite

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Formula:
Fe2+SiO3
System:
Monoclinic
Colour:
brown, colourless, green
Hardness:
5 - 6
Dimorph of:
Isostructural with:

Classification of Clinoferrosilite

Approved
9.DA.10

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
65.1.1.2

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
14.21.4

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg
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First Recorded Occurrence of Clinoferrosilite

Year of Discovery:
1935

Physical Properties of Clinoferrosilite

Colour:
brown, colourless, green
Streak:
white
Hardness (Mohs):
5 - 6
Cleavage:
Distinct/Good

Crystallography of Clinoferrosilite

Crystal System:
Monoclinic
Cell Parameters:
a = 9.53Å, b = 9.21Å, c = 5.15Å
β = 107.63°
Ratio:
a:b:c = 1.035 : 1 : 0.559
Unit Cell Volume:
V 430.79 ų (Calculated from Unit Cell)

Optical Data of Clinoferrosilite

Type:
Biaxial (+)
RI values:
nα = 1.764 nβ = 1.767 nγ = 1.792
2V:
Measured: 25° , Calculated: 40°
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
very strong

Chemical Properties of Clinoferrosilite

Formula:
Fe2+SiO3
Essential elements:
All elements listed in formula:

Relationship of Clinoferrosilite to other Species

Other Members of Group:
AegirineNaFe3+Si2O6
Aegirine-augite(Na,Ca)(Fe3+,Fe2+,Mg,Al)Si2O6
Augite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
ClinoenstatiteMgSiO3
DiopsideCaMgSi2O6
EsseneiteCaFe3+[AlSiO6]
GrossmaniteCaTi3+ AlSiO6
HedenbergiteCaFe2+Si2O6
JadeiteNa(Al,Fe3+)Si2O6
Jervisite(Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6
JohannseniteCaMn2+Si2O6
KanoiteMn2+(Mg,Mn2+)Si2O6
KosmochlorNaCrSi2O6
KushiroiteCaAl[AlSiO6]
NamansiliteNaMn3+Si2O6
NatalyiteNa(V3+,Cr)Si2O6
Omphacite(Ca,Na)(Mg,Al)Si2O6
PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6
Pigeonite(Mg,Fe2+,Ca)(Mg,Fe2+)Si2O6
SpodumeneLiAlSi2O6
9.DA.05Donpeacorite(Mn2+,Mg)Mg[SiO3]2
9.DA.05EnstatiteMgSiO3
9.DA.05FerrosiliteFeSiO3
9.DA.10ClinoenstatiteMgSiO3
9.DA.10KanoiteMn2+(Mg,Mn2+)Si2O6
9.DA.10Pigeonite(Mg,Fe2+,Ca)(Mg,Fe2+)Si2O6
9.DA.15Augite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
9.DA.15DiopsideCaMgSi2O6
9.DA.15EsseneiteCaFe3+[AlSiO6]
9.DA.15HedenbergiteCaFe2+Si2O6
9.DA.15JohannseniteCaMn2+Si2O6
9.DA.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6
9.DA.15DavisiteCaScAlSiO6
9.DA.15KushiroiteCaAl[AlSiO6]
9.DA.15GrossmaniteCaTi3+ AlSiO6
9.DA.20Aegirine-augite(Na,Ca)(Fe3+,Fe2+,Mg,Al)Si2O6
9.DA.20Omphacite(Ca,Na)(Mg,Al)Si2O6
9.DA.25AegirineNaFe3+Si2O6
9.DA.25JadeiteNa(Al,Fe3+)Si2O6
9.DA.25Jervisite(Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6
9.DA.25KosmochlorNaCrSi2O6
9.DA.25NamansiliteNaMn3+Si2O6
9.DA.25NatalyiteNa(V3+,Cr)Si2O6
9.DA.30SpodumeneLiAlSi2O6
14.21.1Olivine(Mg,Fe2+)2SiO4
14.21.2Ringwoodite(Mg,Fe2+)2SiO4
14.21.3Wadsleyite(Mg,Fe2+)2(SiO4)
14.21.5Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.6Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.7 Magnesiocummingtonite
14.21.8Grunerite☐{Fe22+}{Fe52+}(Si8O22)(OH)2
14.21.9Minnesotaite(Fe,Mg)3(Si4O10)(OH)2
14.21.10Chesterite(Mg,Fe)17Si20O54(OH)6
14.21.11Jimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.12Clinojimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.13MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
14.21.14Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40

Other Names for Clinoferrosilite

Name in Other Languages:

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 Clinoferrosilite

Reference List:
American Mineralogist (1936): 21: 678.

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.

Hugh-Jones, D.A., Sharp, T., Angel, R.J., and Woodland, A. (1996) The transition of orthoferrosilite to high-pressure C2/c clinoferrosilite at ambient temperature. European Journal of Mineralogy: 8: 1337-1345.

Internet Links for Clinoferrosilite

Localities for Clinoferrosilite

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.
Australia
 
  • New South Wales
    • Yancowinna Co.
Birch BH Book
Brazil
 
  • Minas Gerais
Jour. of South American Earth Sci. 15:709–723
China
 
  • Henan Province
    • Pingdingshan Prefecture
      • Lushan Co.
Dongyang Zhang, Huimin Su, Lei Tian, Jianli Kang, and Yang Gao (2010): Journal of Mineralogy and Petrology 31(1), 53-63
Germany
 
  • North Rhine-Westphalia
    • Sauerland
      • Iserlohn
        • Letmathe
BLAß, G. & GRAF, H. W. (1995): Neufunde von bekannten Fundstellen (13). Mineralien-Welt 6 (3), 47-51.
  • Rhineland-Palatinate
    • Eifel
      • Mayen
        • Ettringen
          • Bellerberg volcano
Blass, G., Graf, H.W., Kolitsch, U., Neue Funde aus der Vulkaneifel - ein Rückblick auf die Sammelsaison 2002, Mineralien-Welt 13/5, 2003
Japan
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Shitouyouze
Matsueda, H. (1980) Journal of the Mining College, Akita University, Ser. A, Mining Geology, 5, #4, 15-77.; Matsueda, H. (1980) Journal of the Mining College, Akita University, Ser. A, Mining Geology, 5, #4, 15-77.
Kenya
 
  • Rift Valley Province
Rocky Mountain (53rd) and South-Central (35th) Sections, GSA, Joint Annual Meeting (April 29–May 2, 2001) Session No. 7--Booth# 38
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
[World of Stones 12:49]
South Africa
 
  • Free State Province
    • Fezile Dabi District
      • Vredefort
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa.
  • North West Province
    • Bojanala Platinum District
      • Western Bushveld Complex
Excalibur Minerals photo ID 140072
Tajikistan
 
  • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
    • Zeravshan Range
      • Yagnob River
Sharygin, V.V., Sokol, E.V. and Belakovskii, D.I. (2009): Fayalite-sekaninaite paralava from the Ravat coal fire (central Tajikistan). Russian Geology and Geophysics 50, 703-721.
USA
 
  • California
    • Inyo Co.
      • Coso Mts (Coso Range)
        • Coso District (New Coso District)
          • Coso Hot Springs
www.mineralsocal.org/scfm/california/i.htm.
          • Sugarloaf Mountain
Bowen, N.L. (1935), Ferrosilite as a natural mineral: American Journal of Science, 5th. Series: 30: 481; Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 107; Pemberton, H. Earl (1983), Minerals of California: 386.
Bowen, N.L. (1935), Ferrosilite as a natural mineral: American Journal of Science, 5th. Series: 30: 481 (491 ?); Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 107; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 307.
  • Wyoming
    • Park Co.
      • Yellowstone National Park
Amer.J.Sci.(1935) ser. 4, 30, 481-494
Mineral and/or Locality  
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