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Parwanite Mineral Data

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General Parwanite Information

Help on Chemical  Formula: Chemical Formula: (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7•30H2O
Help on Composition: Composition: Molecular Weight = 1,775.14 gm
   Potassium    0.55 %  K     0.66 % K2O
   Sodium       0.97 %  Na    1.31 % Na2O
   Calcium      2.26 %  Ca    3.16 % CaO
   Magnesium    4.11 %  Mg    6.81 % MgO
   Aluminum    12.16 %  Al   22.98 % Al2O3
   Phosphorus  13.96 %  P    31.98 % P2O5
   Hydrogen     3.80 %  H    34.00 % H2O
   Oxygen      62.19 %  O
              ______        ______ 
              100.00 %      100.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.75K0.25Mg3CaAl8(PO4)8(OH)7•30(H2O)
Help on IMA Status: IMA Status: Proposed IMA 2006
Help on Locality: Locality: Parwan lava cave, 45 km WNW of Melbourne, Victoria, Australia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA1986-036a

Parwanite Image

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Comments: Translucent to white parwanite globules on montmorillonite matrix.
Location: Parwan Lava Caves, Bacchus Marsh Victoria, Australia. Scale: Picture Size 2 x 3 mm.
© Diederik Visser

Parwanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.2195:1:1.7395
Help on Cell Dimensions: Cell Dimensions: a = 26.148, b = 11.781, c = 20.494, V = 6,313.17
Help on Crystal System: Crystal System: Monoclinic Space Group: P 2, Pm, P 2/m, P 21,
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.538(1), 10.031(0.14), 9.36(0.13),9.57(0.13), 12.202(0.12), 8.718(0.11), 4.878(0.1), 8.937(0.1),

Optical Properties of Parwanite

Help on Optical Data: Optical Data:

Calculated Properties of Parwanite

Help on Fermion Index: Fermion Index: Fermion Index = 0.0044429145
Boson Index = 0.9955570855
Help on Photoelectric: Photoelectric: PEParwanite = 1.53 barns/electron
U=PEParwanite x relectron= . barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 8.17 (Gamma Ray American Petroleum Institute Units)
Concentration of Parwanite per GRapi unit = 12.24 (%)

Estimated Radioactivity from Parwanite - barely detectable


Parwanite Classification

Help on  Dana Class: Dana Class: (37)Phosphate Minerals
  (37.00)Without Dana Classification Numbers
  (37.00.00)Phosphate, Basic Carbonate Arnhemite* (K,Na)2Mg2(P2O7)•5(H2O) Unk Hex Arsenowaylandite* BiAl3(AsO4)2(OH)6 R 3m 3 2/m Auroantimonate* AuSbO3 Ortho ? Ortho Barium-zinc-alumopharmacosiderite* (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3•5(H2O) I 42m 4 2m Chernovite-(Ce)* (Ce,Y)(AsO4) I 41/amd 4/m 2/m 2/m Churchite-(Dy)* (Dy,Sm,Gd,Nd)(PO4)•2(H2O) Mono Gengenbachite KFe3(H2PO4)2(HPO4)4•6H2OorKFe3H8(PO4)6•6H2O P 63mc 6mm IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 63/m 6/m 2/m 2/m IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m Krasnoselskite* CoWO4 P 2/c 2/m Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho Oxiberaunite* (Fe,Mn)Fe5(PO4)4O(OH)4•6(H2O) Mono Parwanite (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7•30H2O P 2, Pm, P 2/m, P 21, Mono Pyrocoproite* (Mg(K,Na))2P2O7 Unk Mono Pyrophosphite* K2CaP2O7 P 21/n 2/m Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 08.DO.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DO -With CO3, SO4, SiO4
08.DO.40 Parwanite (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7•30H2O P 2, Pm, P 2/m, P 21, Mono

Other Parwanite Information

Help on See Also: See Also: Links to other databases for Parwanite :
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: 08.DO.40





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