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Namansilite

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About NamansiliteHide

Formula:
NaMn3+Si2O6
Colour:
dark brownish red, purplish red
Hardness:
6 - 7
Crystal System:
Monoclinic
Name:
For the principal constituent elements: sodium (natrium), manganese, silicon.

Classification of NamansiliteHide

Approved
Approval Year:
1989
8/F.01-145
9.DA.25

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
65.1.3c.3

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

Physical Properties of NamansiliteHide

Colour:
dark brownish red, purplish red
Streak:
brown-red
Hardness:
6 - 7 on Mohs scale
Cleavage:
Perfect

Optical Data of NamansiliteHide

Type:
Biaxial (-)
RI values:
nα = 1.746 nβ = 1.769 nγ = 1.837
2V:
Measured: 15° to 20°, Calculated: 64°
Max Birefringence:
δ = 0.091
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v

Chemical Properties of NamansiliteHide

Formula:
NaMn3+Si2O6
Common Impurities:
Al,Ti,Fe,Mg,Ca,K,Sr,Ba

Crystallography of NamansiliteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 9.51 Å, b = 8.61 Å, c = 5.35 Å
β = 105.12°
Ratio:
a:b:c = 1.105 : 1 : 0.621
Unit Cell V:
422.90 ų (Calculated from Unit Cell)

Type Occurrence of NamansiliteHide

Synonyms of NamansiliteHide

Other Language Names for NamansiliteHide

Relationship of Namansilite to other SpeciesHide

Other Members of this group:
AegirineNaFe3+Si2O6Mon. 2/m : B2/b
Aegirine-augite(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6Mon. 2/m : B2/b
Augite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : B2/b
ClinoenstatiteMgSiO3Mon. 2/m : P21/b
clinoensteniteA name for the pyroxene series clinoenstatite - clinohypersthene.
ClinoferrosiliteFe2+SiO3Mon. 2/m : P21/b
DiopsideCaMgSi2O6Mon. 2/m : B2/b
EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
JadeiteNa(Al,Fe3+)Si2O6Mon.
JervisiteNaSc3+Si2O6Mon.
JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
KosmochlorNaCrSi2O6Mon.
KushiroiteCaAl[AlSiO6]Mon. 2/m : B2/b
NatalyiteNaV3+Si2O6Mon.
Omphacite(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6Mon. 2/m
PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon.
Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : P21/b
SpodumeneLiAlSi2O6Mon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Braunite8 photos of Namansilite associated with Braunite on mindat.org.
Pectolite3 photos of Namansilite associated with Pectolite on mindat.org.
Quartz3 photos of Namansilite associated with Quartz on mindat.org.
Noelbensonite2 photos of Namansilite associated with Noelbensonite on mindat.org.
Gonyerite2 photos of Namansilite associated with Gonyerite on mindat.org.
Cerchiaraite-(Mn)1 photo of Namansilite associated with Cerchiaraite-(Mn) on mindat.org.
Pyroxmangite1 photo of Namansilite associated with Pyroxmangite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DA.ProtoenstatiteMg2Si2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DA.05Donpeacorite(Mn2+,Mg)Mg[SiO3]2Orth.
9.DA.05EnstatiteMgSiO3Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.05FerrosiliteFeSiO3Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.10ClinoenstatiteMgSiO3Mon. 2/m : P21/b
9.DA.10ClinoferrosiliteFe2+SiO3Mon. 2/m : P21/b
9.DA.10KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
9.DA.10Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : P21/b
9.DA.15Augite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : B2/b
9.DA.15DiopsideCaMgSi2O6Mon. 2/m : B2/b
9.DA.15EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
9.DA.15HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
9.DA.15JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
9.DA.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon.
9.DA.15DavisiteCaScAlSiO6Mon. 2/m : B2/b
9.DA.15KushiroiteCaAl[AlSiO6]Mon. 2/m : B2/b
9.DA.15GrossmaniteCaTi3+ AlSiO6Mon. 2/m : B2/b
9.DA.20Aegirine-augite(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6Mon. 2/m : B2/b
9.DA.20Omphacite(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6Mon. 2/m
9.DA.25AegirineNaFe3+Si2O6Mon. 2/m : B2/b
9.DA.25JadeiteNa(Al,Fe3+)Si2O6Mon.
9.DA.25JervisiteNaSc3+Si2O6Mon.
9.DA.25KosmochlorNaCrSi2O6Mon.
9.DA.25NatalyiteNaV3+Si2O6Mon.
9.DA.30SpodumeneLiAlSi2O6Mon.

Related Minerals - Dana Grouping (8th Ed.)Hide

65.1.3c.1JadeiteNa(Al,Fe3+)Si2O6Mon.
65.1.3c.2AegirineNaFe3+Si2O6Mon. 2/m : B2/b
65.1.3c.4KosmochlorNaCrSi2O6Mon.
65.1.3c.5NatalyiteNaV3+Si2O6Mon.
65.1.3c.6JervisiteNaSc3+Si2O6Mon.

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.

References for NamansiliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ohashi, H., Osawa, T., Tsukimura, K. (1987) Refinement of structure of manganese sodium dimetasilicate. Acta Crystallographica: C43: 605-607.
Basso, R., Lucchetti, G., Palenzona, A. (1989) Crystallographic and chemical study of a natural C2/c ordered Na-Mn-clinopyroxene from Val di Vara (Northern Appenines, Italy). Neues Jahrbuch für Mineralogie, Monatshefte: 59-68.
Kalinin, V.V., Marsii, I.M., Dikov, Y.P., Troneva, N.V., Trubkin, N.V. (1992) Namansilite NaMn3+Si2O6: a new silicate. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 121(1): 89-94. [in Russian]
Kawachi, Y.,Coombs, D.S. (1993) Namansilite, NaMn3+Si2O6: A widespread clinopyroxene? Mineralogical Magazine: 57: 533-538.
Jambor J.L., Vanko D.A. (1993) New mineral names. American Mineralogist: 78: 1314-1319.
(1994) Neues Jahrbuch für Mineralogie, Abhandlungen: 168: 1-13.
New Minerals (1997), New Minerals 1990-1994.

Internet Links for NamansiliteHide

Localities for NamansiliteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Darling Co.
      • Tamworth
Mineralogical Magazine: 60:369-374.; Kawachi Y., Ashley P. M., Vince D., Goodwin M., 1994. Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia. Mineralogical Magazine, 58: 671-677
    • Forbes Co.
      • Grenfell
Oberti, R., Boiocchi, M., Hawthorne, F. C., Ball, N. A., & Ashley, P. M. (2016). PREPUBLICATION: Oxo-mangani-leakeite from the Hoskins mine, New South Wales, Australia: occurrence and mineral description. Mineralogical Magazine.
Germany
 
  • Rhineland-Palatinate
    • Mayen
      • Ettringen
        • Bellerberg volcano
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
Italy
 
  • Liguria
    • La Spezia Province
      • Vara Valley
        • Borghetto Vara
Mineralogical Magazine: 60:369-374.
Japan
 
  • Kyushu Region
    • Oita Prefecture
      • Saiki City
Uehara, S., et al (2014) MInerals from Kyushu and Yamaguchi. (Fukuoka Mineral Club, 355 pages); Nishio-Hamane, D., Ogoshi, Y., & Minakawa, T. (2012). Miyahisaite, (Sr, Ca) 2Ba3 (PO4) 3F, a new mineral of the hedyphane group in the apatite supergroup from the Shimoharai mine, Oita Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 107(3), 121-126.
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
Russia
 
  • Far-Eastern Region
    • Khabarovskiy Kray
      • Taikan Ridge
[MinRec 27:306]
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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