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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)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010035NamansiliteOhashi H, Osawa T, Tsukimura K (1987) Refinement of the structure of manganese sodium dimetasilicate Acta Crystallographica C43 605-6071987synthetic0293
CIF Raw Data - click here to close

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
BurnettiteCaVAlSiO6Mon. 2/m : B2/b
ClinoenstatiteMgSiO3Mon. 2/m : P21/b
ClinoferrosiliteFe2+SiO3Mon. 2/m : P21/b
DavisiteCaScAlSiO6Mon. 2/m : B2/b
DiopsideCaMgSi2O6Mon. 2/m : B2/b
EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
GrossmaniteCaTi3+ AlSiO6Mon. 2/m : B2/b
HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
JadeiteNa(Al,Fe3+)Si2O6Mon.
JervisiteNaSc3+Si2O6Mon. 2/m : B2/b
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. 2/m : B2/b
Tissintite(Ca,Na,◻)AlSi2O6Mon. 2/m : B2/b
UM2001-19-SiO:AlCaMgNa(Na,Mg,Ca)(Mg,Al)Si2O6Mon. 2/m : B2/b
UM2003-36-SiO:CaNaNaCrSi2O6 - CaMgSi2O6Mon. 2/m : B2/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
8 photos of Namansilite associated with BrauniteMn2+Mn3+6(SiO4)O8
3 photos of Namansilite associated with PectoliteNaCa2Si3O8(OH)
3 photos of Namansilite associated with QuartzSiO2
2 photos of Namansilite associated with NoelbensoniteBaMn3+2(Si2O7)(OH)2 · H2O
2 photos of Namansilite associated with Gonyerite(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8
1 photo of Namansilite associated with Cerchiaraite-(Mn)Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
1 photo of Namansilite associated with PyroxmangiteMnSiO3

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.05EnstatiteMg2Si2O6Orth. 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. 2/m : B2/b
9.DA.25KosmochlorNaCrSi2O6Mon.
9.DA.25NatalyiteNaV3+Si2O6Mon.
9.DA.30SpodumeneLiAlSi2O6Mon. 2/m : B2/b

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. 2/m : B2/b

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.
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.; Kawachi, Y., Coombs, D.S., Miura, H. (1996) Noélbensonite, a new BaMn silicate of the lawsonite structure type, from Woods mine, New South Wales, Australia. Mineralogical Magazine: 60: 369-374.
    • 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-Koblenz District
      • Vordereifel
        • Ettringen
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
      • Borghetto di Vara
Mineralogical Magazine: 60:369-374.
Japan
 
  • 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
    • Suceava district
      • Iacobeni
http://minerals-of-the-carpathians.eu
Russia
 
  • Khabarovsk Krai
    • 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
 
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