Rauenthalite Mineral Data

Rauenthalite Mineral Data
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General Rauenthalite Information

Help on Chemical Formula: Chemical Formula: Ca3(AsO4)2•10(H2O)
Help on Composition: Composition: Molecular Weight = 578.23 gm
   Calcium   20.79 %  Ca   29.09 % CaO
   Arsenic   25.91 %  As   39.75 % As2O5
   Hydrogen   3.49 %  H    31.16 % H2O
   Oxygen    49.81 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3(AsO4)2•10(H2O)
Help on Environment: Environment: Post-mine low-temperature reaction product of carbonate gangue with arsenical solutions derived from arsenic.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Sainte-Marie-aux-Mines, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Rauenthal vein system, on which Sainte-Marie-aux-Mines, France, is located.
Help on Name Pronunciation: Name Pronunciation: Rauenthalite + Pronunciation Say RAUENTHALITE
Help on Synonym: Synonym: ICSD 36047
  PDF 35-569
 

Rauenthalite Image

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Rauenthalite

Comments: Bright white botryoidal to transparent colorless prismatic rauenthalite microcrystals.
Location: Gabe Gottes, Sainte-Marie-aux-Mines, Alsace, Haute-Rhin, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rauenthalite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0324:1:0.509
Help on Cell Dimensions: Cell Dimensions: a = 12.564, b = 12.169, c = 6.195, Z = 2; alpha = 89.09°, beta = 79.69°, gamma = 118.58° V = 818.22 Den(Calc)= 2.35
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.8(1), 3.36(0.8), 2.44(0.6),
Click Here for Large Rauenthalite Structure Window Crystal Structure:

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Catti M , Ivaldi G , Acta Crystallographica, Section B , 39 (1983) p.4-10, On the topotactic dehydration Ca3(AsO4)2*11H2O (phaunouxite) ->, Ca3(AsO4)2*10H2O (rauenthalite), and the structures of both minerals, Locality: Sainte Marie-aux-Mines, Alsace, France

 

Physical Properties of Rauenthalite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Snow white.
Help on Density: Density: 2.36
Help on Streak: Streak: white
 

Optical Properties of Rauenthalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2347,KPDmeas= 0.2347,KC= 0.2314
Ncalc = 1.55
Help on Optical Data: Optical Data: Biaxial (+), a=1.54, b=1.552, g=1.57, bire=0.0300, 2V(Calc)=80, 2V(Meas)=85.
 

Calculated Properties of Rauenthalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Rauenthalite =2.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0005250109
Boson Index = 0.9994749891
Help on Photoelectric: Photoelectric: PERauenthalite = 19.38 barns/electron
U=PERauenthalite x rElectron Density= 45.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rauenthalite is Not Radioactive
 

Rauenthalite Classification
Help on Dana Class: Dana Class: 40.03.11.01 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 · x(H2O)
  (40.03.11)Dana Group
 
40.03.11.01 Rauenthalite Ca3(AsO4)2•10(H2O) P1 1
Help on Strunz Class: Strunz Class: 08.CJ.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
 
08.CJ.40 Phaunouxite Ca3(AsO4)•11(H2O) P1 1
 
08.CJ.40 Rauenthalite Ca3(AsO4)2•10(H2O) P1 1
 

Other Rauenthalite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Rauenthalite :
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
15 - WWW-MINCRYST

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Rauenthalite

Ca3(AsO4)2•10(H2O)
Dana No: 40.03.11.01 Strunz No: 08.CJ.40
Locality:

 

Notes: