Mineralogy Database

Marumoite Mineral Data

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General Marumoite Information

Help on Chemical  Formula: Chemical Formula: Pb32As40S92
Help on Composition: Composition: Molecular Weight = 12577.34 gm
   Arsenic  23.83 %  As
   Lead     52.72 %  Pb
   Sulfur   23.46 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Pb32As40S92
Help on Environment: Environment: A member of the rathite (sartorite) group
Help on IMA Status: IMA Status: Proposed IMA 1998 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Synonym: Synonym: IMA1998-004
 

Marumoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.0722:1:0.0682
Help on Cell Dimensions: Cell Dimensions: a = 8.368, b = 115.75, c = 7.903, Z = 2; beta = 90.11° V = 7,654.80 Den(Calc)= 5.46
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: P 21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.978(1), 3.663(0.7), 2.339(0.65),2.735(0.6), 2.713(0.5), 2.872(0.48), 3.216(0.48),
 

Physical Properties of Marumoite

Help on Color: Color: Lead gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Metallic
 

Calculated Properties of Marumoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Marumoite =5.46 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEMarumoite = 958.94 barns/electron
U=PEMarumoite x rElectron Density=4,509.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Marumoite is Not Radioactive
 

Marumoite Classification

Help on  Dana Class: Dana Class: 03.07.08.04 (03)Sulfides - Sulfosalts
  (03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.07.08)Sartorite Group
 
03.07.08.01 Sartorite PbAs2S4 P 21/c 2/m
 
03.07.08.02 Guettardite Pb(Sb,As)2S4 P 21/a 2/m
 
03.07.08.03 Twinnite Pb(Sb,As)2S4 P1 1
 
03.07.08.04 Marumoite! Pb32As40S92 P 21 2
Help on  Strunz Class: Strunz Class: 02.HC.05g 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HC -With only Pb
 
02.HC.05g Marumoite! Pb32As40S92 P 21 2
 

Other Marumoite Information

Help on References: References: NAME( CanMin, Vol 38) PHYS. PROP.(CanMin, Vol 38)
Help on See Also: See Also: Links to other databases for Marumoite :
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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Print or Cut-and-Paste your Marumoite Specimen Label here :

Marumoite

Pb32As40S92
Dana No: 03.07.08.04 Strunz No: 02.HC.05g
Locality:

 

Notes: