Mapimite Mineral Data + 
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- 42.8.7.1 Mapimite Zn2Fe3(AsO4)3(OH)4·10(H2O) Cm m
- VII/D.08-10 Kleemanite ZnAl2(PO4)2(OH)2·3(H2O) P 2, P 21, P 2/m or P 21/m Mono
- VII/D.08-20 Whitmoreite FeFe2(PO4)2(OH)2·4(H2O) P 21/c 2/m
- VII/D.08-30 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2·4(H2O) P 21/c 2/m
- VII/D.08-40 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2·4(H2O) P 21/c 2/m
- VII/D.08-45 Cobaltarthurite! CoFe2(AsO4)2(OH)2·4(H2O) P 21/c 2/m
- VII/D.08-50 Ojuelaite ZnFe2(AsO4)2(OH)2·4(H2O) P 21/c 2/m
- VII/D.08-60 Mapimite Zn2Fe3(AsO4)3(OH)4·10(H2O) Cm m
General Mapimite Information |
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 Chemical Formula: |
Zn2Fe+++3(AsO4)3(OH)4·10(H2O) | ||
| Composition: |
Molecular Weight = 963.26 gm | ||
| Zinc 13.58 % Zn 16.90 % ZnO | |||
| Iron 17.39 % Fe 24.87 % Fe2O3 | |||
| Arsenic 23.33 % As 35.79 % As2O5 | |||
| Hydrogen 2.51 % H 22.44 % H2O | |||
| Oxygen 43.19 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Zn2Fe3+3(AsO4)3(OH)4·10(H2O) | ||
| IMA Status: |
Approved IMA 1981 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 26554 | ||
| PDF 35-515 | |||
Search for Mapimite Images | |||
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Images:
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Mapimite Crystallography |
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| Axial Ratios: |
a:b:c =1.0114:1:0.7672 | ||
| Cell Dimensions: |
a = 11.425, b = 11.296, c = 8.667, Z = 2; beta = 107.733° V = 1,065.39 Den(Calc)= 3.00 | ||
| Crystal System: |
Monoclinic - DomaticH-M Symbol (m) Space Group: Cm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 8.24(1), 7.83(0.94), 4.662(0.61), | ||
Physical Properties of Mapimite |
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| Cleavage: |
[???] Good | ||
| Color: |
Blue, Green. | ||
| Density: |
2.95 | ||
| Hardness: |
3 - Calcite | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Mapimite |
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| Gladstone-Dale: |
CI meas= 0.026 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.043 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2291,KPDmeas= 0.233,KC= 0.2393 |
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| Optical Data: |
Biaxial (+), a=1.672, b=1.678, g=1.712, bire=0.0400, 2V(Calc)=48, 2V(Meas)=50. | ||
Calculated Properties of Mapimite |
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| Electron Density: |
relectron=2.87 gm/cc |
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| Fermion Index |
Fermion Index = 0.00946 Boson Index = 0.99054 |
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| Photoelectric: |
PEMapimite = 27.46 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mapimite is Not Radioactive |
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Mapimite Classification |
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| Dana Class: |
42.8.7.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | ||
| (42.8)where (AB)7 (XO4)4 Zq · x(H2O) | |||
| (42.8.7)Dana Group | |||
| Strunz Class: |
VII/D.08-60 VII - Phosphates, Arsenates and Vanadates | ||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe | |||
| VII/D.08 - Arthurite group | |||
Other Mapimite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Mapimite : 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 - WWW-MINCRYST 13 -École des Mines de Paris Search for Mapimite using: Visit our Advertisers for Mapimite : Translate Mapimite Mineral Data : Ask about Mapimite here : Print or Cut-and-Paste your Mapimite Specimen Label here :
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