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Wattevilleite Mineral Data
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General Wattevilleite Information
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 Chemical Formula: |
Na2Ca(SO4)2•4(H2O) (?) |
| Composition: |
Molecular Weight = 350.25 gm |
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Sodium 13.13 % Na 17.70 % Na2O |
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Calcium 11.44 % Ca 16.01 % CaO |
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Hydrogen 2.30 % H 20.57 % H2O |
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Sulfur 18.31 % S 45.72 % SO3 |
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Oxygen 54.82 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2Ca(SO4)2•4(H2O) |
| Environment: |
A questionable species. Associated with other sulfates in a pyritic lignite. |
| IMA Status: |
Valid Species (Pre-IMA) 1879 |
| Locality: |
Einigkeit mine, Bauersberg, near Bischofsheim, Bavaria, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Oscar de Watteville of Paris, France. |
| Name Pronunciation: |
Wattevilleite + Pronunciation  |
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Wattevilleite Image |
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Images:
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Wattevilleite
Comments: White masses of wattervilleite scattered on lingite matrix. Label gives locality simply as Bischofsheim. Photographed under indirect natural light, hence the deep blue reflections and shadow areas.
Location: Einigkeit Mine, Bauersberg Mt., Bischofsheim, Rhön Mts, Franconia, Bavaria, Germany.
Scale: Field of view 0.25 cm.
© Jeff Weissman / Photographic Guide to Mineral Species |
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Wattevilleite Crystallography
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| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 4.39(1), 4.2(0.6), 2.89(0.5),2.95(0.5), 5.44(0.5), 2.67(0.4), 4.03(0.4), 5.1(0.4), |
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Physical Properties of Wattevilleite
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| Color: |
White. |
| Density: |
1.81 |
| Habit: |
Acicular - Occurs as needle-like crystals. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Luster: |
Silky |
| Streak: |
white |
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Optical Properties of Wattevilleite
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| Gladstone-Dale: |
CI meas= -0.139 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2484,KC= 0.2181
Ncalc = 1.39 |
| Optical Data: |
Biaxial (-), a=1.435, b=1.455, g=1.459, bire=0.0240, 2V(Calc)=46, 2V(Meas)=48. Dispersion dispersion not observed. |
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Calculated Properties of Wattevilleite
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| Electron Density: |
Bulk Density (Electron Density)=1.84 gm/cc
note: Specific Gravity of Wattevilleite =1.81 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0017943435
Boson Index = 0.9982056565 |
| Photoelectric: |
PEWattevilleite = 2.74 barns/electron
U=PEWattevilleite x rElectron Density= 5.04 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wattevilleite is Not Radioactive |
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Wattevilleite Classification
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| Dana Class: |
29.03.04.01 (29)Hydrated Acid and Sulfates |
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(29.03)where (A+)2 B (XO4)2 � x(H2O) |
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(29.03.04)Dana Group |
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29.03.04.01 Wattevilleite Na2Ca(SO4)2•4(H2O)(?) Unk Ortho |
| Strunz Class: |
07.CC.85 07 - SULFATES (SELENATES, TELLURATES) |
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07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O |
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07.CC -With medium-sized and large cations |
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07.CC.85 Wattevilleite Na2Ca(SO4)2•4(H2O)(?) Unk Ortho |
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Other Wattevilleite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Wattevilleite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Wattevilleite Specimen Label here :
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Wattevilleite
Na2Ca(SO4)2•4(H2O) (?)
Dana No: 29.03.04.01 Strunz No: 07.CC.85
Locality:
Notes:
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