General Pittongite Information Chemical Formula: |
Na0.22[(W,Fe+++)(O,OH)3•0.44H2O |
Composition: |
Molecular Weight = 222.44 gm |
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Potassium 0.05 % K 0.06 % K2O |
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Sodium 2.27 % Na 3.07 % Na2O |
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Calcium 0.36 % Ca 0.50 % CaO |
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Aluminum 0.24 % Al 0.46 % Al2O3 |
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Iron 4.02 % Fe 5.17 % FeO |
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Hydrogen 0.53 % H 4.78 % H2O |
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Tungsten 67.78 % W 85.47 % WO3 |
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Oxygen 24.74 % O |
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______ ______ |
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100.00 % 99.51 % = TOTAL OXIDE |
Empirical Formula: |
Na0.22(H2O)0.44Ca0.02K0.003W0.82Fe2+0.16Al0.02O2.7(OH)0.3 |
Environment: |
Formed by direct alteration of ferberite in the presence of acidic, oxidizing solutions containing sodiumNew structure type |
IMA Status: |
Approved IMA 2006 (Dana # Added) |
Locality: |
Mine dumps near the main shaft of a tungsten deposit 35 km west of Ballerat in the New England District of New South Wales, Australia. Link to MinDat.org Location Data. |
Name Origin: |
Named for the former village of Pittong near the deposit. |
Synonym: |
IMA2005-034a |
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Images:
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| | Pittongite Crystallography Axial Ratios: |
a:c = 1:6.92972 |
Cell Dimensions: |
a = 7.286, c = 50.49, Z = 36; V = 2,321.21 Den(Calc)= 5.73 |
Crystal System: |
Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 6m2 |
X Ray Diffraction: |
By Intensity(I/Io): 3.153(1), 3.111(0.91), 1.823(0.76),1.578(0.64), 3.306(0.62), 2.45(0.59), 5.956(0.52), 1.192(0.44), |
| Physical Properties of Pittongite Color: |
Creamy yellow. |
Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
Hardness: |
2-3 - Gypsum-Calcite |
Luster: |
Pearly |
Streak: |
cream |
| Optical Properties of Pittongite Gladstone-Dale: |
CI calc= -0.052 (Good) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.1894,KC= 0.1801 Ncalc = 2.03 Optical Data: |
Uniaxial (-), w=2.085. |
| Calculated Properties of Pittongite Electron Density: |
Bulk Density (Electron Density)=4.98 gm/cc |
note: Specific Gravity of Pittongite =5.73 gm/cc. Fermion Index: |
Fermion Index = 0.09 |
Boson Index = 0.91 Photoelectric: |
PEPittongite = 842.75 barns/electron |
U=PEPittongite x relectron=4,197.63 barns/cc. Radioactivity: |
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GRapi = 0.66 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Pittongite - barely detectable | Pittongite Classification Dana Class: |
49.02.06.01 (49)Basic and Hydrated Molybdates and Tungstates |
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(49.02)(Hydrated) |
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(49.02.06)Dana Group |
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Strunz Class: |
04.DH.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DH -With large (± medium-sized) cations; sheets of edge-sharing octahedra |
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| Other Pittongite Information References: |
NAME( AmMin, v93:704) PHYS. PROP.(AmMin, v93:704) OPTIC PROP.(AmMin, v93:704) |
See Also: |
Links to other databases for Pittongite : |
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 Pittongite using: Visit our Advertisers for Pittongite : A Bijoux Google Search for PittongiteAdam's Minerals Google Search for Pittongite Cape Minerals Google Search for Pittongite Dakota Matrix Minerals Google Search for Pittongite Excalibur Mineral Corp. Google Search for Pittongite Exceptional Minerals Google Search for Pittongite John Betts Fine Minerals Search for Pittongite McDougall Minerals Google Search for Pittongite Mineral News Website Link Rock and Mineral Shows Google Search for Pittongite Weinrich Minerals, Inc. Google Search for Pittongite Ask about Pittongite here : Print or Cut-and-Paste your Pittongite Specimen Label here :
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