Kaatialaite Mineral Data

Kaatialaite Mineral Data
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General Kaatialaite Information

Help on Chemical Formula: Chemical Formula: Fe+++[H2As+++++O4]3•5-5.5(H2O)
Help on Composition: Composition: Molecular Weight = 577.74 gm
   Iron       9.67 %  Fe   13.82 % Fe2O3
   Arsenic   38.90 %  As   59.67 % As2O5
   Hydrogen   2.97 %  H    26.51 % H2O
   Oxygen    48.46 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+3(H2)3(AsO4)•5.5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Kaatiala granite pegmatite, Kuortane, western Finland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Kaatialaite + Pronunciation Say KAATIALAITE
Help on Synonym: Synonym: ICSD 15550
  PDF 43-681
 

Kaatialaite Image

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Kaatialaite

Comments: White kaatialaite with arsenolite on native arsenic.
Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Kaatialaite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7747:1:0.24
Help on Cell Dimensions: Cell Dimensions: a = 15.34, b = 19.8, c = 4.752, Z = 4; beta = 91.9° V = 1,442.54 Den(Calc)= 2.66
Help on Crystal System: Crystal System: MonoclinicSpace Group: P 21,P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.35(1), 9.91(0.6), 7.72(0.5),
Click Here for Large Kaatialaite Structure Window Crystal Structure:

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Boudjada A , Guitel J C , Acta Crystallographica, Section B , 37 (1981) p.1402-1405, Structure cristalline d un orthoarseniate acide de fer(III) pentahydrate: Fe(H2AsO4)3*5H2O, Locality: synthetic, Note: anisoB s from ICSD

 

Physical Properties of Kaatialaite

Help on Color: Color: Greenish blue, Gray, Yellow, White.
Help on Density: Density: 2.64
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Streak: Streak: white
 

Optical Properties of Kaatialaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2234,KPDmeas= 0.2251,KC= 0.2303
Ncalc = 1.61
Help on Optical Data: Optical Data: Biaxial (+), a=1.573, b=1.574, g=1.636, bire=0.0630, 2V(Calc)=16, 2V(Meas)=15.
 

Calculated Properties of Kaatialaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.58 gm/cc
note: Specific Gravity of Kaatialaite =2.64 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0022863747
Boson Index = 0.9977136253
Help on Photoelectric: Photoelectric: PEKaatialaite = 28.79 barns/electron
U=PEKaatialaite x rElectron Density= 74.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kaatialaite is Not Radioactive
 

Kaatialaite Classification
Help on Dana Class: Dana Class: 39.03.09.01 (39)Hydrated Acid Phosphates, etc
  (39.03)with miscellaneous formulae
  (39.03.09)Dana Group
 
39.03.09.01 Kaatialaite Fe[H2AsO4]3•5-5.5(H2O) P 21,P 21/m Mono
Help on Strunz Class: Strunz Class: 08.CC.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CC -With only medium-sized cations, RO4:H2O = 1:1.5
 
08.CC.10 Kaatialaite Fe[H2AsO4]3•5-5.5(H2O) P 21,P 21/m Mono
 

Other Kaatialaite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Kaatialaite :
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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Ask about Kaatialaite 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 Kaatialaite Specimen Label here :

Kaatialaite

Fe+++[H2As+++++O4]3•5-5.5(H2O)
Dana No: 39.03.09.01 Strunz No: 08.CC.10
Locality:

 

Notes: