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Pellyite

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About PellyiteHide

Formula:
Ba2Ca(Fe,Mg)2Si6O17
Colour:
colorless to pale yellow
Lustre:
Vitreous
Hardness:
6
Crystal System:
Orthorhombic
Name:
After the Pelly River, Yukon Territory, Canada, the headwaters of which are close to the type locality.
This page provides mineralogical data about Pellyite.


Classification of PellyiteHide

Approved
First Published:
1972
9.DO.10

9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
78.6.3.1

78 : Unclassified Silicates
6 :
14.7.9

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn

Physical Properties of PellyiteHide

Vitreous
Colour:
colorless to pale yellow
Hardness:
Fracture:
Conchoidal

Optical Data of PellyiteHide

Type:
Biaxial (+)
RI values:
nα = 1.643 nβ = 1.645 nγ = 1.649
2V:
Measured: 47° , Calculated: 72°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very strong

Chemical Properties of PellyiteHide

Formula:
Ba2Ca(Fe,Mg)2Si6O17
IMA Formula:
Ba2CaFe2+2Si6O17
Common Impurities:
Al,Mn,Zn

Crystallography of PellyiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 14.2 Å, b = 15.67 Å, c = 7.15 Å
Ratio:
a:b:c = 0.906 : 1 : 0.456
Unit Cell V:
1,590.98 ų (Calculated from Unit Cell)

Type Occurrence of PellyiteHide

Place of Conservation of Type Material:
Department of Geology, The University of British Columbia.
Reference:
Montgomery, J.H., Thompson, R.M., Meagher, E.P. (1972) Pellyite, a new barium silicate mineral from the Yukon Territory. Canadian Mineralogist: 11: 444-447.

Synonyms of PellyiteHide

Other Language Names for PellyiteHide

German:Pellyit
Spanish:Pellyita

Varieties of PellyiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Gillespite4 photos of Pellyite associated with Gillespite on mindat.org.
Sanbornite3 photos of Pellyite associated with Sanbornite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DO.05Pyroxferroite(Fe,Mn,Ca)SiO3Tric.
9.DO.05PyroxmangiteMnSiO3Tric. 1
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+Si6O17Orth.
9.DO.15Manganonordite-(Ce)Na3SrCeMn2+Si6O17Orth.
9.DO.15Ferronordite-(La)Na3Sr(La,Ce)FeSi6O17
9.DO.20AlamositePbSiO3Mon.
9.DO.25LiebauiteCa3Cu5Si9O26Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.7.1SanborniteBa2(Si4O10)Orth.
14.7.2KrauskopfiteBaSi2O5 · 3H2OMon.
14.7.3WalstromiteBaCa2(Si3O9)Tric.
14.7.4MacdonalditeBaCa4Si16O36(OH)2 · 10H2OOrth.
14.7.5EricssoniteBaMn2+2Fe3+(Si2O7)O(OH)Mon. 2/m : B2/m
14.7.6Ericssonite-2OBaMn2+2Fe3+(Si2O7)O(OH)Orth.
14.7.7GillespiteBaFe2+Si4O10Tet.
14.7.8AndrémeyeriteBaFe2+2(Si2O7)Mon.
14.7.10TaikaniteSr3BaMn2+2(Si4O12)O2Mon.
14.7.11WillemiteZn2SiO4Trig. 3 : R3
14.7.12HemimorphiteZn4Si2O7(OH)2 · H2OOrth. mm2 : Imm2
14.7.13ZincsiliteZn3(Si4O10)(OH)2 · 4H2OMon.
14.7.14HardystoniteCa2Zn(Si2O7)Tet. 4 2m : P4 21m
14.7.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon.
14.7.16ClinohedriteCaZn(SiO4) · H2OMon. m : Bb
14.7.17JunitoiteCaZn2Si2O7 · H2OOrth. mm2
14.7.18LarsenitePbZnSiO4Orth. mm2 : Pna21
14.7.19EsperitePbCa2Zn3(SiO4)3Mon. 2/m : P21/b
14.7.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2Mon.
14.7.21GerstmanniteMnMgZn(SiO4)(OH)2Orth.
14.7.22GageiteMn21(Si4O12)2O3(OH)20Mon. 2/m
14.7.23FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2

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 PellyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Montgomery, J.H., Thompson, R.M., Meagher, E.P. (1972) Pellyite, a new barium silicate mineral from the Yukon Territory. Canadian Mineralogist: 11: 444-447.
Meagher, E.P. (1976) The atomic arrangement of pellyite: Ba2Ca(Fe,Mg)2Si6O17. American Mineralogist: 61: 67-73.
Pabst, A., Harris, J. (1984) Pellyite: new localities and new data. Canadian Mineralogist: 22: 653-658.

Internet Links for PellyiteHide

Localities for PellyiteHide

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.
Canada (TL)
 
  • Yukon
    • Watson Lake mining district
      • Itsi Mt.
        • Wilson Lake
Canadian Mineralogist:11:444; Canadian Mineralogist22:653-658; Alfors, J.T. & Pabst, A. (1984): Titanian taramellites in western North America, American Mineralogist, 69, 358-373.
Mexico
 
  • Baja California (Baja California Norte; BC Norte)
    • Tres Pozos
Canadian Mineralogist22:653-658; American Mineralogist, Volume 69, pages 358-373, 1984
USA
 
  • California
    • Fresno Co.
      • Big Creek-Rush Creek District
        • Rush Creek deposit
Pavel M. Kartashov analytical data 2018
Canadian Mineralogist (2001): 39:1053-1058.
Pabst, Adolf (1978) Zur morphologie des taramellits. Tschermaks Mineralogische und Petrographische Mitteilungen: 25: 248; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 465; Canadian Mineralogist: (1973): 11: 444; Canadian Mineralogist (1984): 22: 653-658.
    • Mariposa Co.
      • East Belt
        • Clearing House District
          • Clearing House
            • Trumbull Peak
[MinRec 30:414]; Canadian Mineralogist22:653-658
Mineral and/or Locality  
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