Mineralogy Database

Phosphosiderite Mineral Data

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General Phosphosiderite Information

Help on Chemical  Formula: Chemical Formula: Fe+++PO4•2(H2O)
Help on Composition: Composition: Molecular Weight = 186.85 gm
   Iron        29.89 %  Fe   42.73 % Fe2O3
   Phosphorus  16.58 %  P    37.98 % P2O5
   Hydrogen     2.16 %  H    19.28 % H2O
   Oxygen      51.38 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+(PO4)•2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1890
Help on Locality: Locality: Kalterborn Grube, Eisenfeld, Siegen, Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its chemical composition, PHOSPHrous and SIDERos, Iron..
Help on Name Pronunciation: Name Pronunciation: Phosphosiderite Say PHOSPHOSIDERITE
Help on Synonym: Synonym: ICSD 34007
  PDF 33-666

Phosphosiderite Image

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  Phosphosiderite   Barbosalite

Comments: Transparent, brown crystal of phosphosiderite on black barbosalite.
Location: Bull Moose mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Tinsleyite   Phosphosiderite   Rockbridgeite

Comments: Violet botryoidal tinsleyite on bluish-purple botryoidal phosphosiderite on dark, massive rockbridgeite.
Location: Bendada, Guarda, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Phosphosiderite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.539:1:0.8804
Help on Cell Dimensions: Cell Dimensions: a = 5.32, b = 9.87, c = 8.69, Z = 4; beta = 90.6° V = 456.27 Den(Calc)= 2.72
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.78(1), 4.37(0.8), 4.69(0.8),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 0 3) ( 0 1 0) ( 1 0 1) ( 1 1 0) ( 0 1 1) ( 0 0 1)

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Physical Properties of Phosphosiderite

Help on Cleavage: Cleavage: {010} Perfect, {001} Distinct
Help on Color: Color: Colorless, Purple, Pink, Red, Red violet.
Help on Density: Density: 2.76
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Phosphosiderite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2641,KPDmeas= 0.2603,KC= 0.2697
Ncalc = 1.73 - 1.74
Help on Optical Data: Optical Data: Biaxial (-), a=1.692, b=1.725, g=1.738, bire=0.0460, 2V(Calc)=62, 2V(Meas)=62.

Calculated Properties of Phosphosiderite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.71 gm/cc
note: Specific Gravity of Phosphosiderite =2.72 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0065862806
Boson Index = 0.9934137194
Help on Photoelectric: Photoelectric: PEPhosphosiderite = 9.60 barns/electron
U=PEPhosphosiderite x rElectron Density= 25.99 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Phosphosiderite is Not Radioactive

Phosphosiderite Classification

Help on  Dana Class: Dana Class: (40)Hydrated Phosphates, etc
  (40.04)where A+++ XO4 � x(H2O)
  (40.04.03)Metavariscite group Metavariscite AlPO4•2(H2O) P 21/n 2/m Phosphosiderite FePO4•2(H2O) P 21/n 2/m Kolbeckite ScPO4•2(H2O) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 08.CD.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CD -With only medium-sized cations, RO4:H2O = 1:2
08.CD.05 Kolbeckite ScPO4•2(H2O) P 21/n 2/m
08.CD.05 Metavariscite AlPO4•2(H2O) P 21/n 2/m
08.CD.05 Phosphosiderite FePO4•2(H2O) P 21/n 2/m

Other Phosphosiderite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Phosphosiderite :
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.CD.05





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