Kaatialaite Mineral Data + 
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- 39.3.9.1 Kaatialaite Fe[H2AsO4]3·5-5.5(H2O) P 21,P 21/m Mono
- VII/C.05-10 Kaatialaite Fe[H2AsO4]3·5-5.5(H2O) P 21,P 21/m Mono
- VII/C.05-20 Krautite MnAsO3(OH)2·(H2O) P 21 2
- VII/C.05-30 Sterlinghillite Mn3(AsO4)2·3(H2O) Mono Mono
General Kaatialaite Information |
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 Chemical Formula: |
Fe+++[H2As+++++O4]3·5-5.5(H2O) | ||
| 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 | |||
| Empirical Formula: |
Fe3+3(H2)3(AsO4)·5.5(H2O) | ||
| IMA Status: |
Approved IMA 1984 | ||
| Locality: |
Kaatiala granite pegmatite, Kuortane, western Finland. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Synonym: |
ICSD 15550 | ||
| PDF 43-681 | |||
Kaatialaite Image | |||
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Images:
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Kaatialaite Crystallography |
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| Axial Ratios: |
a:b:c =0.7747:1:0.24 | ||
| Cell Dimensions: |
a = 15.34, b = 19.8, c = 4.752, Z = 4; beta = 91.9° V = 1,442.54 Den(Calc)= 2.66 | ||
| Crystal System: |
MonoclinicSpace Group: P 21,P 21/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 8.35(1), 9.91(0.6), 7.72(0.5), | ||
Physical Properties of Kaatialaite |
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| Color: |
Greenish blue, Gray, Yellow, White. | ||
| Density: |
2.64 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Acicular - Occurs as needle-like crystals. | ||
| Habit: |
Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. | ||
| Streak: |
white | ||
Optical Properties of Kaatialaite |
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| 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 |
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| 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 |
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| Electron Density: |
relectron=2.58 gm/cc |
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| Fermion Index |
Fermion Index = 0.00228 Boson Index = 0.99772 |
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| Photoelectric: |
PEKaatialaite = 28.79 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kaatialaite is Not Radioactive |
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Kaatialaite Classification |
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| Dana Class: |
39.3.9.1 (39)Hydrated Acid Phosphates, etc | ||
| (39.3)with miscellaneous formulae | |||
| (39.3.9)Dana Group | |||
| Strunz Class: |
VII/C.05-10 VII - Phosphates, Arsenates and Vanadates | ||
| VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg | |||
| VII/C.05 - Kaatialaite - Sterlinghillite series | |||
Other Kaatialaite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Kaatialaite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Kaatialaite using: Visit our Advertisers for Kaatialaite : Translate Kaatialaite Mineral Data : Ask about Kaatialaite here : Print or Cut-and-Paste your Kaatialaite Specimen Label here :
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