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Lipscombite Mineral Data

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General Lipscombite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mn)Fe+++2(PO4)2(OH)2
Help on Composition: Composition: Molecular Weight = 391.27 gm
   Manganese    3.51 %  Mn    4.53 % MnO
   Iron        39.25 %  Fe   13.77 % FeO / 40.81 % Fe2O3
   Phosphorus  15.83 %  P    36.28 % P2O5
   Hydrogen     0.52 %  H     4.60 % H2O
   Oxygen      40.89 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.75Mn2+0.25Fe3+2(PO4)2(OH)2
Help on Environment: Environment: Hydrothermally altered phosphate zone of a complex granite pegmatite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1953
Help on Locality: Locality: Sapucaia pegmatite mine, about 50 km east-southeast of Governador Valadares, Minas Gerais, Brazil Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Nunn Lipscomb (1909- ), mineralogist, University of Minnesota, Minneapolis, Minnesota, USA, who determined the crystal structure of the synthetic compound.
Help on Name Pronunciation: Name Pronunciation: Lipscombite + Pronunciation Say LIPSCOMBITE
Help on Synonym: Synonym: ICSD 202937
  PDF 45-1454

Lipscombite Image

Click Here for Larger   Image in a New Browser Window Images:
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Comments: Light to dark green botryoidal lipscombite crust on rock.
Location: Valmy, Humboldt County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lipscombite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.80738
Help on Cell Dimensions: Cell Dimensions: a = 7.31, c = 13.212, Z = 4; V = 706.00 Den(Calc)= 3.68
Help on Crystal System: Crystal System: Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 41212
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.314(1), 3.206(0.6), 1.656(0.4),

Physical Properties of Lipscombite

Help on Color: Color: Green gray, Olive green, Black.
Help on Density: Density: 3.66
Help on Diaphaneity: Diaphaneity: Opaque

Optical Properties of Lipscombite

Help on Optical Data: Optical Data: NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.2454) where Ncalc=Dcalc*KC+1
NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.2454) where Ncalc=Dmeas*KC+1

Calculated Properties of Lipscombite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.57 gm/cc
note: Specific Gravity of Lipscombite =3.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0085183369
Boson Index = 0.9914816631
Help on Photoelectric: Photoelectric: PELipscombite = 13.45 barns/electron
U=PELipscombite x rElectron Density= 48.00 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lipscombite is Not Radioactive

Lipscombite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.10)where (A++ B++)3 (XO4)2 Zq
  (41.10.02)Lipscombite Group Lipscombite (Fe,Mn)Fe2(PO4)2(OH)2 P 41212 4 2 2 Zinclipscombite! ZnFe2(PO4)2(OH) P 43212 or P 41212 4 2 2
Help on  Strunz Class: Strunz Class: 08.BB.90 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 � 1:1
08.BB.90 Lipscombite (Fe,Mn)Fe2(PO4)2(OH)2 P 41212 4 2 2
08.BB.90 Richellite Ca3Fe10(PO4)8(OH)12•n(H2O) P 4 4
08.BB.90 Zinclipscombite! ZnFe2(PO4)2(OH) P 43212 or P 41212 4 2 2

Other Lipscombite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lipscombite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.BB.90





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