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Plumalsite Mineral Data

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General Plumalsite Information

Help on Chemical  Formula: Chemical Formula: Pb4Al2(SiO3)7 (?)
Help on Composition: Composition: Molecular Weight = 1,415.35 gm
   Aluminum   3.81 %  Al    7.20 % Al2O3
   Silicon   13.89 %  Si   29.72 % SiO2
   Lead      58.56 %  Pb   63.08 % PbO
   Oxygen    23.74 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb4Al2Si7O21
Help on Environment: Environment: Continental deposits and the upper part of the weathered crust of crystalline rocks. Evidently of supergene origin.
Help on IMA Status: IMA Status: Not Approved IMA 1968
Help on Locality: Locality: Ukrainian Shield. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Pb, Al, Si).
 

Plumalsite Crystallography

Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
 

Physical Properties of Plumalsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Green, Yellow.
Help on Density: Density: 4.35
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Plumalsite

Help on Optical Data: Optical Data: NCalc= 1.7 - from Gladstone-Dale relationship (KC = 0.1606) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Plumalsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.81 gm/cc
note: Specific Gravity of Plumalsite =4.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.13
Boson Index = 0.87
Help on Photoelectric: Photoelectric: PEPlumalsite =1,026.77 barns/electron
U=PEPlumalsite x rElectron Density=3,913.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Plumalsite is Not Radioactive
 

Plumalsite Classification

Help on  Dana Class: Dana Class: 65.00.00.00 (65)Inosilicate Minerals
  (65.00)Without Dana Classification Numbers
  (65.00.00)Inosilicate
 
65.00.00.00 Ashcroftine-(Ce)* K5Na5(Ce,Ca)12Si28O70(OH)2(CO3)8•8(H2O) I 4/mmm 4/m 2/m 2/m
 
65.00.00.00 Brokenhillite* (Mn,Fe)32[Si24O60]OH29Cl11 P 63mc 6mm
 
65.00.00.00 Grossmanite CaTiAlSiO6 C 2/m 2/m
 
65.00.00.00 Hypersthene? (Mg,Fe)2Si2O6 2/m 2/m 2/m
 
65.00.00.00 IMA2007-015 K(CaNa)(Fe3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
 
65.00.00.00 IMA2008-070 NaLi2(Fe2Al2Li)(Si6Al2)O22F2 C 2/m 2/m
 
65.00.00.00 IMA2009-010 [Ba6(PO4)2(CO3)][Fe7(OH)4Fe2O2(SiO3)8] P1 1
 
65.00.00.00 IMA2009-012 NaNa2(Mg2Al2Li)Si8O22F2 C 2/m 2/m
 
65.00.00.00 Kushiroite CaAl2SiO6 C 2/c 2/m
 
65.00.00.00 Plumalsite* Pb4Al2(SiO3)7(?) Unk Ortho
Help on  Strunz Class: Strunz Class: 09.DX.00 09 - SILICATES (Germanates)
  09.D - Unclassified Strunz Inosilicates
  09.DX -Inosilicate
 
09.DX.00 Hypersthene? (Mg,Fe)2Si2O6 2/m 2/m 2/m
 
09.DX.00 Plumalsite* Pb4Al2(SiO3)7(?) Unk Ortho
 
09.DX.00 IMA2008-070 NaLi2(Fe2Al2Li)(Si6Al2)O22F2 C 2/m 2/m
 
09.DX.00 IMA2007-015 K(CaNa)(Fe3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
 
09.DX.00 Tanohataite! LiMn2Si3O8(OH) P1 1
 
09.DX.00 Punkaruaivite! Li{Ti2(OH)2[Si4O11(OH)]}•H2O C 2/c 2/m
 
09.DX.00 Yegorovite! Na4[Si2O4(OH)2]2•7H2O P 21/c 2/m
 
09.DX.00 Kushiroite CaAl2SiO6 C 2/c 2/m
 
09.DX.00 Grossmanite CaTiAlSiO6 C 2/m 2/m
 
09.DX.00 IMA2009-009 KNa2Li(Mg,Fe)2Ti2Si8O24 C 2/m 2/m
 
09.DX.00 IMA2009-010 [Ba6(PO4)2(CO3)][Fe7(OH)4Fe2O2(SiO3)8] P1 1
 
09.DX.00 IMA2009-012 NaNa2(Mg2Al2Li)Si8O22F2 C 2/m 2/m
 

Other Plumalsite Information

Help on References: References: NAME( AmMin, v53:349) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Plumalsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Plumalsite

Pb4Al2(SiO3)7 (?)
Dana No: 65.00.00.00 Strunz No: 09.DX.00
Locality:

 

Notes:

 

 
   
 


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