Mineralogy Database

Orschallite Mineral Data

Search Webmineral :

General Orschallite Information

Help on Chemical  Formula: Chemical Formula: Ca3(SO3)2SO4•12(H2O)
Help on Composition: Composition: Molecular Weight = 592.61 gm
   Calcium   20.29 %  Ca   28.39 % CaO
   Hydrogen   4.08 %  H    36.48 % H2O
   Sulfur    16.23 %  S    21.62 % SO2 / 13.51 % SO3
   Oxygen    59.40 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3(SO3)2(SO4)•12(H2O)
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for P. Orschall, Cologne, Germany, who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Orschallite + Pronunciation Say ORSCHALLITE
Help on Synonym: Synonym: ICSD 73997
  PDF 45-1484

Orschallite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.49524
Help on Cell Dimensions: Cell Dimensions: a = 11.35, c = 28.321, Z = 6; V = 3,159.59 Den(Calc)= 1.87
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.73(1), 2.69(0.8), 8.11(0.8),

Physical Properties of Orschallite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless.
Help on Density: Density: 1.9
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Orschallite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2647,KPDmeas= 0.2606,KC= 0.2642
Ncalc = 1.49 - 1.5
Help on Optical Data: Optical Data: Uniaxial (+), w=1.4941, e=1.496, bire=0.0019.

Calculated Properties of Orschallite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.94 gm/cc
note: Specific Gravity of Orschallite =1.87 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0017825961
Boson Index = 0.9982174039
Help on Photoelectric: Photoelectric: PEOrschallite = 3.45 barns/electron
U=PEOrschallite x rElectron Density= 6.70 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Orschallite is Not Radioactive

Orschallite Classification

Help on  Dana Class: Dana Class: (34)Selenites - Tellurites - Sulfites
  (34.08)Dana Type
  (34.08.07)Dana Group Orschallite Ca3(SO3)2SO4•12(H2O) R 3c 3 2/m
Help on  Strunz Class: Strunz Class: 04.JE.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JE -Sulfites
04.JE.15 Orschallite Ca3(SO3)2SO4•12(H2O) R 3c 3 2/m

Other Orschallite Information

Help on References: References: PHYS. PROP.(Am.Min.,Vol.79,p572,1994) OPTIC PROP.(Am.Min.,Vol.79,p572,1994)
Help on See Also: See Also: Links to other databases for Orschallite :
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

Search for Orschallite using:

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

Visit our Advertisers for Orschallite :

Ask about Orschallite 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 Orschallite Specimen Label here :


Dana No: Strunz No: 04.JE.15





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