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Wooldridgeite Mineral Data |
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Wooldridgeite Mineral Data |
General Wooldridgeite Information |
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 Chemical Formula: |
Na2CaCu++2(P2O7)2•10(H2O) | ||
| Composition: |
Molecular Weight = 741.19 gm | ||
| Sodium 6.20 % Na 8.36 % Na2O | |||
| Calcium 5.41 % Ca 7.57 % CaO | |||
| Copper 17.15 % Cu 21.46 % CuO | |||
| Phosphorus 16.72 % P 38.30 % P2O5 | |||
| Hydrogen 2.72 % H 24.31 % H2O | |||
| Oxygen 51.81 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na2CaCu2(P2O7)2•10(H2O) | ||
| Environment: |
Along fractures in Cambrian sedimentary rocks above an unconformity. | ||
| IMA Status: |
Approved IMA 1998 (Dana # Added) | ||
| Locality: |
Found in the Judkins quarry, Nuneaton, Warwickshire, U.K. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after James Wooldridge (1923-1995), keen amateur mineralogist, micromounter and gemologist from Fernhill Heath, Worcestershire, U.K., who discovered the mineral. | ||
| Name Pronunciation: |
Wooldridgeite + Pronunciation  |
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| Synonym: |
IMA1997-037 | ||
| Woolridgeite - Mineral name error corrected to wooldridgeite | |||
Wooldridgeite Image | |||
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Images:
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Wooldridgeite Crystallography |
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| Axial Ratios: |
a:b:c =0.3633:1:0.3353 | ||
| Cell Dimensions: |
a = 11.938, b = 32.854, c = 11.017, Z = 8; V = 4,320.99 Den(Calc)= 2.28 | ||
| Crystal System: |
Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: F dd2 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 6.52(1), 3.255(0.4), 4.05(0.4), | ||
Physical Properties of Wooldridgeite |
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| Cleavage: |
None | ||
| Color: |
Greenish blue. | ||
| Diaphaneity: |
Transparent | ||
| Fracture: |
Brittle - Irregular - Very brittle fracture producing irregular fragments | ||
| Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||
| Hardness: |
2-3 - Gypsum-Calcite | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
very pale blue | ||
Optical Properties of Wooldridgeite |
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| Gladstone-Dale: |
CI calc= -0.016 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2246,KC= 0.221 Ncalc = 1.5 |
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| Optical Data: |
Biaxial (+), a=1.508, b=1.511, g=1.517, bire=0.0090, 2V(Calc)=72, 2V(Meas)=76.2. Dispersion none. | ||
Calculated Properties of Wooldridgeite |
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| Electron Density: |
Bulk Density (Electron Density)=2.29 gm/cc note: Specific Gravity of Wooldridgeite =2.28 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0003257499 Boson Index = 0.9996742501 |
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| Photoelectric: |
PEWooldridgeite = 8.82 barns/electron U=PEWooldridgeite x rElectron Density= 20.19 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Wooldridgeite is Not Radioactive |
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Wooldridgeite Classification |
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| Dana Class: |
40.05.14.01 (40)Hydrated Phosphates, etc | ||
| (40.05)with miscellaneous formulae | |||
| (40.05.14)Dana Group | |||
| Strunz Class: |
08.FC.25 08 - PHOSPHATES, ARSENATES, VANADATES | ||
| 08.F - Polyphosphates, Polyarsenates, [4]-Polyvanadates | |||
| 08.FC -Polyphosphates, etc., with H2O only | |||
Other Wooldridgeite Information |
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| References: |
NAME( CanMin, 8/99) PHYS. PROP.(Eur. J. Min.,Vol.10,1998) OPTIC PROP.(MinRec, V 31, No. 2) | ||
| See Also: |
Links to other databases for Wooldridgeite : 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 Search for Wooldridgeite using: Visit our Advertisers for Wooldridgeite : Ask about Wooldridgeite here : Print or Cut-and-Paste your Wooldridgeite Specimen Label here :
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