Mineralogy Database

Diaphorite Mineral Data

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General Diaphorite Information

Help on Chemical  Formula: Chemical Formula: Pb2Ag3Sb3S8
Help on Composition: Composition: Molecular Weight = 1,359.78 gm
   Silver    23.80 %  Ag
   Antimony  26.86 %  Sb
   Lead      30.48 %  Pb
   Sulfur    18.87 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb2Ag3Sb3S8
Help on Environment: Environment: In hydrothermal veins with other sulfides, formed at a moderate temperature.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1871
Help on Locality: Locality: Himmelsf�rst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek diaphora, "difference" as being distinct from freieslebenite.
Help on Name Pronunciation: Name Pronunciation: Diaphorite + Pronunciation Say DIAPHORITE
Help on Synonym: Synonym: Brongniardite
  ICSD 38568
  PDF 9-126
 

Diaphorite Image

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  Diaphorite

Comments: Prismatic, striated, metallic diaphorite crystal on quartz.
Location: Morey, Nye County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Diaphorite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4937:1:0.1839
Help on Cell Dimensions: Cell Dimensions: a = 15.84, b = 32.08, c = 5.9, Z = 8; beta = 90.165° V = 2,998.06 Den(Calc)= 6.02
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.296(1), 2.809(0.8), 2.945(0.4),
Help on Forms: Forms:

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Help on Above

Forms: ( 4 0 1) ( 0 8 1) ( 1 1 0) ( 2 0 1) ( 1 0 0)

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Physical Properties of Diaphorite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Steel gray.
Help on Density: Density: 6 - 6.2, Average = 6.1
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: steel gray
 

Optical Properties of Diaphorite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Color: RL Color: White to grayish white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Diaphorite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   41.20   44.40 
   
 420 nm   40.60   43.60 
 440 nm   40.00   43.00 
 460 nm   39.40   42.50 
 480 nm   38.80   42.00 
 500 nm   38.30   41.60 
 520 nm   37.80   41.10 
 540 nm   37.30   40.70 
 560 nm   36.90   40.30 
 580 nm   36.50   39.80 
 600 nm   36.20   39.50 
 620 nm   35.80   39.10 
 640 nm   35.50   38.60 
 660 nm   35.00   38.20 
 680 nm   34.50   37.60 
 700 nm   33.80   37.00 
Calculated Relative Intensity Colors of Diaphorite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 250%
R1                      
R2                      
 

Calculated Properties of Diaphorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.19 gm/cc
note: Specific Gravity of Diaphorite =6.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEDiaphorite = 698.49 barns/electron
U=PEDiaphorite x rElectron Density=3,624.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Diaphorite is Not Radioactive
 

Diaphorite Classification

Help on  Dana Class: Dana Class: 03.05.04.01 (03)Sulfides - Sulfosalts
  (03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.05.04)Dana Group
 
03.05.04.01 Diaphorite Pb2Ag3Sb3S8 C 21/a 2/m
Help on  Strunz Class: Strunz Class: 02.JB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JB -Galena derivatives, with Pb
 
02.JB.05 Diaphorite Pb2Ag3Sb3S8 C 21/a 2/m
 

Other Diaphorite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Diaphorite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Diaphorite

Pb2Ag3Sb3S8
Dana No: 03.05.04.01 Strunz No: 02.JB.05
Locality:

 

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