Kankite Mineral Data + 
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- 40.4.4.1 Kankite FeAsO4·3.5(H2O) Unk Mono
- VII/C.12-10 Newberyite Mg(PO3OH)·3(H2O) P bca 2/m 2/m 2/m
- VII/C.12-20 Steigerite AlVO4·3(H2O) P 21/m, P 2 Mono
- VII/C.12-30 Schoderite Al2(PO4)(VO4)·8(H2O) P 21/m 2/m
- VII/C.12-40 Metaschoderite Al2(PO4)(VO4)·6(H2O) P 2/m 2/m
- VII/C.12-50 Kankite FeAsO4·3.5(H2O) Unk Mono
General Kankite Information |
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 Chemical Formula: |
Fe+++AsO4·3.5(H2O) | ||
| Composition: |
Molecular Weight = 257.82 gm | ||
| Iron 21.66 % Fe 30.97 % Fe2O3 | |||
| Arsenic 29.06 % As 44.57 % As2O5 | |||
| Hydrogen 2.74 % H 24.46 % H2O | |||
| Oxygen 46.54 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe3+(AsO4)·3.5(H2O) | ||
| Environment: |
Found on the old (1200-1400) mine dumps. | ||
| IMA Status: |
Approved IMA 1976 | ||
| Locality: |
Kank, Kutno Hora district, Stredocesky Kraj, Bohemia, Czech Republic. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
Kankite Image | |||
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Images:
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Kankite Crystallography |
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| Axial Ratios: |
a:b:c =1.075:1:0.4364 | ||
| Cell Dimensions: |
a = 18.803, b = 17.49, c = 7.633, Z = 16; beta = 92.71° V = 2,507.42 Den(Calc)= 2.73 | ||
| Crystal System: |
MonoclinicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 12.8(1), 4.764(0.34), 2.63(0.29), | ||
Physical Properties of Kankite |
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| Color: |
Yellow green. | ||
| Density: |
2.7 | ||
| Habit: |
Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Hardness: |
2-3 - Gypsum-Calcite | ||
| Luster: |
Vitreous - Dull | ||
Optical Properties of Kankite |
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| Gladstone-Dale: |
CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.027 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2462,KPDmeas= 0.2489,KC= 0.2529 |
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| Optical Data: |
Biaxial (?), a=1.664, g=1.68, bire=0.0160 | ||
Calculated Properties of Kankite |
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| Electron Density: |
relectron=2.64 gm/cc |
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| Fermion Index |
Fermion Index = 0.00481 Boson Index = 0.99519 |
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| Photoelectric: |
PEKankite = 25.79 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kankite is Not Radioactive |
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Kankite Classification |
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| Dana Class: |
40.4.4.1 (40)Hydrated Phosphates, etc | ||
| (40.4)where A+++ XO4 · x(H2O) | |||
| (40.4.4)Dana Group | |||
| Strunz Class: |
VII/C.12-50 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.12 - Newberyite - Kankite series | |||
Other Kankite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Kankite : 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 Kankite using: Visit our Advertisers for Kankite : Translate Kankite Mineral Data : Ask about Kankite here : Print or Cut-and-Paste your Kankite Specimen Label here :
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