Rathite Mineral Data + Say RATHITE


[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Rathite Information

Help on Chemical  Formula: Chemical Formula: Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40
Help on Composition: Composition: Molecular Weight = 5,369.42 gm
   Thallium   1.90 %  Tl
   Silver     4.02 %  Ag
   Arsenic   25.81 %  As
   Lead      44.38 %  Pb
   Sulfur    23.89 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb11.5Tl0.5Ag2As18.5S40
Help on Environment: Environment: In crystalline dolomite with other Pb-As-S minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1896
Help on Locality: Locality: Binnental, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Gerhard von Rath (1830-1888), Professor of Mineralogy, Bonn, Germany.
Help on Synonym: Synonym: ICSD 26778
  PDF 9-426
  Wiltshireite
 

Rathite Image

Click Here for Larger Rathite Image in a New Browser Window Images:
Click Here for Larger Rathite Image

Rathite

Comments: Gray metallic foliated rathite, with pyrite in sugary dolomite.
Location: Lengenbach Quarry, Binnental, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Click Here for Larger Rathite Image in a New Browser Window Images:
Click Here for Larger Rathite Image

Rathite

Comments: Black prismatic crystal of rathite with glossy surface and red realgar on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal length 5 mm.
© Walter Gabriel

Rathite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0661:1:3.1524
Help on Cell Dimensions: Cell Dimensions: a = 8.496, b = 7.969, c = 25.122, Z = 1; beta = 100.704° V = 1,671.28 Den(Calc)= 5.33
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.75(1), 3.6(0.8), 3.39(0.7),
 

Physical Properties of Rathite

Help on Cleavage: Cleavage: [100] Perfect, [010] Parting
Help on Color: Color: Lead gray.
Help on Density: Density: 5.41
Help on Diaphaniety: Diaphaniety: Nearly opaque
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark brown
 

Optical Properties of Rathite

Help on RL Anisotrophism: RL Anisotrophism: Intense, olive-green or yellow and bluish violet.
Help on RL Color: RL Color: White with deep red internal reflections.
Help on RL Pleochroism: RL Pleochroism: Strong.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Rathite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   38.60   42.90 
   
 420 nm   37.80   42.20 
 440 nm   37.00   41.50 
 460 nm   36.20   41.00 
 480 nm   35.50   40.50 
 500 nm   34.90   40.00 
 520 nm   34.30   39.60 
 540 nm   33.80   39.20 
 560 nm   33.30   38.60 
 580 nm   32.80   38.00 
 600 nm   32.20   37.10 
 620 nm   31.60   36.20 
 640 nm   30.80   35.40 
 660 nm   30.00   34.70 
 680 nm   29.20   34.10 
 700 nm   28.40   33.60 
Calculated Relative Intensity Colors of Rathite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 280%
R1                        
R2                        
 

Calculated Properties of Rathite

Help on Electron Density: Electron Density:

relectron=4.62 gm/cc
note: rRathite =5.33 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.09986
Boson Index = 0.90014
Help on Photoelectric: Photoelectric:

PERathite = 849.12 barns/electron
U=PERathite x relectron=3,924.49 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rathite is Not Radioactive

 

Rathite Classification

Help on  Dana Class: Dana Class: 3.7.12.1 (3)Sulfides - Sulfosalts
  (3.7)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (3.7.12)Dana Group
 
3.7.12.1 Rathite Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40 P 21/n 2/m
Help on  Strunz Class: Strunz Class: II/E.25-20 II - Sulfides and sulphosalts
  II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts with Arsen and Antimon x = 2.3 - 1.8
  II/E.25 - Liveingite - Twinnite series
 
II/E.25-10 Liveingite Pb9As13S28 P 21 2
 
II/E.25-20 Rathite Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40 P 21/n 2/m
 
II/E.25-30 Sartorite PbAs2S4 P 21/c 2/m
 
II/E.25-40 Guettardite Pb(Sb,As)2S4 P 21/a 2/m
 
II/E.25-50 Twinnite Pb(Sb,As)2S4 P1 1
 

Other Rathite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin, v 89, p 471) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Rathite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST

Search for Rathite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Rathite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Rathite Mineral Data :

Ask about Rathite 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 Rathite Specimen Label here :

Rathite

Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40
Dana No: 3.7.12.1 Strunz No: II/E.25-20
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links