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Hydromolysite Mineral Data
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General Hydromolysite Information
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 Chemical Formula: |
FeCl3•6(H2O) |
| Composition: |
Molecular Weight = 270.30 gm |
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Iron 20.66 % Fe 29.54 % Fe2O3 |
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Hydrogen 4.47 % H 39.99 % H2O |
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Chlorine 39.35 % Cl 39.35 % Cl |
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- %
Cl -8.88 % -O=Cl2 |
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Oxygen 35.52 % O |
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______ ______ |
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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. |
| Name Pronunciation: |
Hydromolysite + Pronunciation  |
| Synonym: |
Discredited |
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ICSD 30453 |
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PDF 33-645 |
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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 - Prismatic H-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), |
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Physical Properties of Hydromolysite
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| Color: |
Orange red. |
| Density: |
1.84 |
| Streak: |
yellow orange |
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Calculated Properties of Hydromolysite
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| Electron Density: |
Bulk Density (Electron Density)=1.87 gm/cc
note: Specific Gravity of Hydromolysite =1.84 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0045573942
Boson Index = 0.9954426058 |
| Photoelectric: |
PEHydromolysite = 8.55 barns/electron
U=PEHydromolysite x rElectron Density= 15.94 barns/cc.
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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: |
09.03.02.01 (09)Anhydrous and Hydrated Halides |
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(09.03)Dana Type |
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(09.03.02)Dana Group |
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09.03.02.01 Hydromolysite? FeCl3•6(H2O) C 2/m 2/m |
| Strunz Class: |
03.XX.00 03 - Halogenides |
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03.X - Unclassified Strunz Halogenides |
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03.XX -Chloride, Hydrated |
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03.XX.00 Hydrophilite? CaCl2 Pnnm 2/m 2/m 2/m |
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03.XX.00 Hydromolysite? FeCl3•6(H2O) C 2/m 2/m |
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03.XX.00 Lorettoite? Pb7O6Cl2 pseudo-TET Ortho |
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03.XX.00 Yttrocerite* CaF2(Y,Ce)F3 Unk Cubic |
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03.XX.00 IMA2009-014 SrF2 F m3m 4/m 3 2/m |
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03.XX.00 IMA2009-015 NaSrCeF6 P 63/m 6/m |
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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 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Hydromolysite using:
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Ask about Hydromolysite here :
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Print or Cut-and-Paste your Hydromolysite Specimen Label here :
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Hydromolysite
FeCl3•6(H2O)
Dana No: 09.03.02.01 Strunz No: 03.XX.00
Locality:
Notes:
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