Mineralogy Database

Pittongite Mineral Data

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General Pittongite Information

Help on Chemical  Formula: Chemical Formula: Na0.22[(W,Fe+++)(O,OH)3•0.44H2O
Help on Composition: Composition: Molecular Weight = 222.44 gm
   Potassium   0.05 %  K     0.06 % K2O
   Sodium      2.27 %  Na    3.07 % Na2O
   Calcium     0.36 %  Ca    0.50 % CaO
   Aluminum    0.24 %  Al    0.46 % Al2O3
   Iron        4.02 %  Fe    5.17 % FeO
   Hydrogen    0.53 %  H     4.78 % H2O
   Tungsten   67.78 %  W    85.47 % WO3
   Oxygen     24.74 %  O
             ______        ______ 
             100.00 %       99.51 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.22(H2O)0.44Ca0.02K0.003W0.82Fe2+0.16Al0.02O2.7(OH)0.3
Help on Environment: Environment: Formed by direct alteration of ferberite in the presence of acidic, oxidizing solutions containing sodiumNew structure type
Help on IMA Status: IMA Status: Approved IMA 2006 (Dana # Added)
Help on Locality: 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.
Help on Name Origin: Name Origin: Named for the former village of Pittong near the deposit.
Help on Synonym: Synonym: IMA2005-034a

Pittongite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:6.92972
Help on Cell Dimensions: Cell Dimensions: a = 7.286, c = 50.49, Z = 36; V = 2,321.21 Den(Calc)= 5.73
Help on Crystal System: Crystal System: Hexagonal - Ditrigonal Dipyramidal H-M Symbol (6 m2) Space Group: P 6m2
Help on X Ray Diffraction: 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

Help on Color: Color: Creamy yellow.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Pearly
Help on Streak: Streak: cream

Optical Properties of Pittongite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1894,KC= 0.1801
Ncalc = 2.03
Help on Optical Data: Optical Data: Uniaxial (-), w=2.085.

Calculated Properties of Pittongite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.98 gm/cc
note: Specific Gravity of Pittongite =5.73 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEPittongite = 842.75 barns/electron
U=PEPittongite x relectron=4,197.63 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 0.66 (Gamma Ray American Petroleum Institute Units)
Concentration of Pittongite per GRapi unit =150.99 (%)

Estimated Radioactivity from Pittongite - barely detectable


Pittongite Classification

Help on  Dana Class: Dana Class: (49)Basic and Hydrated Molybdates and Tungstates
  (49.02.06)Dana Group Pittongite! Na0.22[(W,Fe)(O,OH)3•0.44H2O P 6m2 6 m2
Help on  Strunz Class: Strunz Class: 04.DH.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra
04.DH.45 Pittongite! Na0.22[(W,Fe)(O,OH)3•0.44H2O P 6m2 6 m2

Other Pittongite Information

Help on References: References: NAME( AmMin, v93:704) PHYS. PROP.(AmMin, v93:704) OPTIC PROP.(AmMin, v93:704)
Help on See Also: 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

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Dana No: Strunz No: 04.DH.45





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