Hydromolysite Mineral Data + 
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- 9.3.2.1 Hydromolysite ? FeCl3·6(H2O) C 2/m 2/m
- III/A.13-05 Lesukite! Al2(OH)5Cl·2(H2O) I m3m 4/m 3 2/m
- III/A.13-10 Cadwaladerite Al(OH)2Cl·4(H2O) None
- III/A.13-20 Chloraluminite AlCl3·6(H2O) R 3c 3 2/m
- III/A.13-30 Hydromolysite FeCl3·6(H2O) C 2/m 2/m
General Hydromolysite Information |
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 Chemical Formula: |
FeCl3·6(H2O) | ||
| Composition: |
Molecular Weight = 270.30 gm | ||
| Iron 20.66 % Fe 29.54 % Fe2O3 | |||
| Hydrogen 4.47 % H 39.99 % H2O | |||
| Chlorine 39.35 % Cl 39.35 % Cl | |||
| - % Cl -8.88 % -O=Cl2 | |||
| Oxygen 35.52 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe3+Cl3·6(H2O) | ||
| Environment: |
Sea water alteration of pyrite. | ||
| IMA Status: |
Discredited IMA 1968 | ||
| Locality: |
Rio Marina, Elba, Italy. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in 1965 for the composition. | ||
| Synonym: |
Discredited | ||
| ICSD 30453 | |||
| PDF 33-645 | |||
Search for Hydromolysite Images | |||
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Images:
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Hydromolysite Crystallography |
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| Axial Ratios: |
a:b:c =1.6835:1:0.8468 | ||
| Cell Dimensions: |
a = 11.834, b = 7.029, c = 5.9524, Z = 2; beta = 100.47° V = 486.88 Den(Calc)= 1.84 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 5.824(1), 5.866(0.8), 3.163(0.15), | ||
Physical Properties of Hydromolysite |
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| Color: |
Orange red. | ||
| Density: |
1.84 | ||
| Streak: |
yellow orange | ||
Optical Properties of Hydromolysite |
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| Optical Data: |
NCalc= 1.65 - from Gladstone-Dale relationship (KC = 0.3534) where Ncalc=Dcalc*KC+1 NCalc= 1.65 - from Gladstone-Dale relationship (KC = 0.3534) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Hydromolysite |
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| Electron Density: |
relectron=1.87 gm/cc |
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| Fermion Index |
Fermion Index = 0.00455 Boson Index = 0.99545 |
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| Photoelectric: |
PEHydromolysite = 8.55 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hydromolysite is Not Radioactive |
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Hydromolysite Classification |
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| Dana Class: |
9.3.2.1 (9)Anhydrous and Hydrated Halides | ||
| (9.3)Dana Type | |||
| (9.3.2)Dana Group | |||
| Strunz Class: |
III/A.13-30 III - Halogenides | ||
| III/A - Simple Halogenides, with water Metal : Halogen = 1 : 1 to 1 : 3 | |||
| III/A.13 - Cadwaladerite - Hydromolysite series | |||
Other Hydromolysite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Hydromolysite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Hydromolysite using: Visit our Advertisers for Hydromolysite : Translate Hydromolysite Mineral Data : Ask about Hydromolysite here : Print or Cut-and-Paste your Hydromolysite Specimen Label here :
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