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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Hydrophilite Mineral Data
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General Hydrophilite Information
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Chemical Formula: |
CaCl2 |
Composition: |
Molecular Weight = 110.98 gm |
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Calcium 36.11 % Ca 50.53 % CaO |
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Chlorine 63.89 % Cl 63.89 % Cl |
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- % Cl -14.42 % -O=Cl2
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CaCl2 |
Environment: |
Found with anhydrite, gypsum and halite. Hydrophillite (1813) was inadequately characterized and is probably antarcticite or sinjarite. |
IMA Status: |
Discredited IMA 2006 |
Locality: |
Luneberg, Hannover, Germany Link to MinDat.org Location Data. |
Name Origin: |
From the Greek hydros = "water" and philos = 'friend' in allusion to the highly deliquescent nature of the mineral. |
Synonym: |
ICSD 26686 |
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PDF 24-223 |
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Hydrophilite Crystallography
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Axial Ratios: |
a:b:c =0.9704:1:0.6531 |
Cell Dimensions: |
a = 6.24, b = 6.43, c = 4.2, Z = 2; V = 168.52 Den(Calc)= 2.19 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm |
X Ray Diffraction: |
By Intensity(I/Io): 3.05(1), 4.48(0.9), 2.33(0.5),2.86(0.4), 1.91(0.3), 2.24(0.3), 2.36(0.3), 2.08(0.2), |
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Physical Properties of Hydrophilite
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Color: |
White. |
Density: |
2.22 |
Diaphaneity: |
Transparent to translucent |
Habit: |
Deliquescent - Crystals absorb water from the air and melt or otherwise deteriorate. |
Habit: |
Pseudo Cubic - Crystals show a cubic outline. |
Habit: |
Twinning Common - Crystals are usually twinned. |
Luster: |
Vitreous - Greasy |
Streak: |
white |
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Optical Properties of Hydrophilite
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Optical Data: |
Biaxial (+), a=1.6, b=1.605, g=1.613, bire=0.0130, 2V(Calc)=78, 2V(Meas)=50. |
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Calculated Properties of Hydrophilite
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Electron Density: |
Bulk Density (Electron Density)=2.13 gm/cc note: Specific Gravity of Hydrophilite =2.19 gm/cc. |
Fermion Index: |
Fermion Index = 0.000487508 Boson Index = 0.999512492 |
Photoelectric: |
PEHydrophilite = 8.70 barns/electron U=PEHydrophilite x rElectron Density= 18.55 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hydrophilite is Not Radioactive |
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Hydrophilite Classification
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Dana Class: |
09.02.07.02 (09)Anhydrous and Hydrated Halides |
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(09.02)where A (X)2 |
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(09.02.07)Cotunnite Group |
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09.02.07.01 Cotunnite PbCl2 Pnam 2/m 2/m 2/m |
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09.02.07.02 Hydrophilite? CaCl2 Pnnm 2/m 2/m 2/m |
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09.02.07.03 Coccinite! HgI2(?) P 41/nmc 4/m 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 |
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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 Hydrophilite Information
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References: |
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Hydrophilite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST
Search for Hydrophilite using:
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Ask about Hydrophilite here :
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Mineral Discussion Forum from Fabre Minerals - also available in
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Print or Cut-and-Paste your Hydrophilite Specimen Label here :
Hydrophilite
CaCl2
Dana No: 09.02.07.02 Strunz No: 03.XX.00
Locality:
Notes:
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