Mineralogy Database

Ramdohrite Mineral Data

Search Webmineral :
  
Advertisment

General Ramdohrite Information

Help on Chemical  Formula: Chemical Formula: Ag3Pb6Sb11S24
Help on Composition: Composition: Molecular Weight = 3,675.64 gm
   Silver     8.80 %  Ag
   Antimony  36.44 %  Sb
   Lead      33.82 %  Pb
   Sulfur    20.94 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Ag3Pb6Sb11S24
Help on Environment: Environment: Found in fine-grained quartz in a vein of hydrothermal origin.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1930
Help on Locality: Locality: Chocaya la vieja, in Potosi, Bolovia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Paul Ramdohr (1890-1985), German mineralogist.
Help on Name Pronunciation: Name Pronunciation: Ramdohrite + Pronunciation Say RAMDOHRITE
Help on Synonym: Synonym: ICSD 31237
  PDF 42-1415
 

Ramdohrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4709:1:0.6674
Help on Cell Dimensions: Cell Dimensions: a = 19.24, b = 13.08, c = 8.73, Z = 2; beta = 90.28° V = 2,196.96 Den(Calc)= 5.56
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.33(1), 2.91(0.6), 3.45(0.4),
 

Physical Properties of Ramdohrite

Help on Color: Color: Bluish black gray.
Help on Density: Density: 5.33
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: gray black
 

Optical Properties of Ramdohrite

Help on Optical Data: Optical Data: NCalc= 1.36 - from Gladstone-Dale relationship (KC = 0.0643) where Ncalc=Dcalc*KC+1
NCalc= 1.34 - from Gladstone-Dale relationship (KC = 0.0643) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Moderate.
Help on RL Color: RL Color: White.
Help on RL Pleochroism: RL Pleochroism: Very weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Ramdohrite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   39.30   43.10 
   
 420 nm   38.80   42.80 
 440 nm   38.30   42.50 
 460 nm   37.80   42.20 
 480 nm   37.40   42.00 
 500 nm   36.90   41.60 
 520 nm   36.50   41.20 
 540 nm   36.00   40.90 
 560 nm   35.70   40.50 
 580 nm   35.30   40.20 
 600 nm   34.80   39.70 
 620 nm   34.40   39.20 
 640 nm   34.00   38.70 
 660 nm   33.40   38.00 
 680 nm   32.80   37.30 
 700 nm   32.00   36.40 
Calculated Relative Intensity Colors of Ramdohrite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 260%
R1                      
R2                      
 

Calculated Properties of Ramdohrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.77 gm/cc
note: Specific Gravity of Ramdohrite =5.56 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PERamdohrite = 754.12 barns/electron
U=PERamdohrite x rElectron Density=3,600.13 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ramdohrite is Not Radioactive
 

Ramdohrite Classification

Help on  Dana Class: Dana Class: 03.04.15.06 (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi)
 
03.04.15.01 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m
 
03.04.15.02 Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m
 
03.04.15.03 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m
 
03.04.15.04 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
 
03.04.15.05 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
 
03.04.15.06 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
 
03.04.15.07 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
 
03.04.15.08 Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 02.JB.40a 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.40a Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
 
02.JB.40a Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
 
02.JB.40a Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m
 
02.JB.40a Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m
 
02.JB.40a Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m
 
02.JB.40a Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
 
02.JB.40a Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
 
02.JB.40a Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
 
02.JB.40a Xilingolite Pb3Bi2S6 C 2/m 2/m
 
02.JB.40a Treasurite Ag7Pb6Bi15S32 B2/m 2/m
 
02.JB.40a Vikingite Ag5Pb8Bi13S30 C 2/m 2/m
 

Other Ramdohrite 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 Ramdohrite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

Search for Ramdohrite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Ramdohrite :

Ask about Ramdohrite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Ramdohrite Specimen Label here :

Ramdohrite

Ag3Pb6Sb11S24
Dana No: 03.04.15.06 Strunz No: 02.JB.40a
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.