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Pellyite

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Formula:
Ba2Ca(Fe,Mg)2Si6O17
System:
Orthorhombic
Hardness:
6
Name:
After the type locality, the Pelly River, Yukon Territory, Canada.
This page provides mineralogical data about Pellyite.

Classification of Pellyite

Approved
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
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http://www.mindat.org/min-3145.html
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Type Occurrence of Pellyite

Year of Discovery:
1971

Physical Properties of Pellyite

Hardness (Mohs):
6

Crystallography of Pellyite

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

Optical Data of Pellyite

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 Pellyite

Formula:
Ba2Ca(Fe,Mg)2Si6O17
Essential elements:
All elements listed in formula:
Common Impurities:
Al,Mn,Zn

Relationship of Pellyite to other Species

9.DO.05Pyroxferroite(Fe,Mn,Ca)SiO3
9.DO.05PyroxmangiteMnSiO3
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.20AlamositePb12[Si12O36]
9.DO.25LiebauiteCa3Cu5Si9O26
14.7.1SanborniteBa2(Si4O10)
14.7.2KrauskopfiteBaSi2O5 · 3H2O
14.7.3WalstromiteBaCa2(Si3O9)
14.7.4MacdonalditeBaCa4Si16O36(OH)2 · 10H2O
14.7.5EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
14.7.6Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
14.7.7GillespiteBaFe2+[Si4O10]
14.7.8AndrémeyeriteBaFe22+(Si2O7)
14.7.10TaikaniteSr3BaMn22+(Si4O12)O2
14.7.11WillemiteZn2SiO4
14.7.12HemimorphiteZn4Si2O7(OH)2 · H2O
14.7.13ZincsiliteZn3(Si4O10)(OH)2 · 4H2O
14.7.14HardystoniteCa2Zn(Si2O7)
14.7.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6
14.7.16ClinohedriteCaZn(SiO4) · H2O
14.7.17JunitoiteCaZn2Si2O7 · H2O
14.7.18LarsenitePbZnSiO4
14.7.19EsperitePbCa2Zn3(SiO4)3
14.7.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2
14.7.21GerstmanniteMnMgZn(SiO4)(OH)2
14.7.22GageiteMn21(Si4O12)2O3(OH)20
14.7.23FranklinfurnaceiteCa2Fe3+Mn32+Mn3+(Zn2Si2O10)(OH)8

Other Names for Pellyite

Name in Other Languages:
German:Pellyit
Spanish:Pellyita

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 Pellyite

Reference List:
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 Pellyite

Localities for Pellyite

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.
Canada (TL)
 
  • Yukon Territory
    • Watson Lake Mining District
      • Itsi Mt.
        • Wilson Lake
CanMin:11:444; Can.Min.22:653-658; 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
Can.Min.22:653-658; American Mineralogist, Volume 69, pages 358-373, 1984
USA
 
  • California
    • Fresno Co.
      • Big Creek-Rush Creek District
        • Rush Creek deposit
          • Big Creek
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]; Can.Min.22:653-658
Mineral and/or Locality  
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