Mineralogy Database

Fluellite Mineral Data

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General Fluellite Information

Help on Chemical  Formula: Chemical Formula: Al2(PO4)F2(OH)•7(H2O)
Help on Composition: Composition: Molecular Weight = 330.05 gm
   Aluminum    16.35 %  Al   30.89 % Al2O3
   Phosphorus   9.38 %  P    21.50 % P2O5
   Hydrogen     4.58 %  H    40.94 % H2O
   Oxygen      58.17 %  O
   Fluorine    11.51 %  F    11.51 % F
                 -   %   F    -4.85 % -O=F2    
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2(PO4)F2(OH)•7(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1824
Help on Locality: Locality: Stennagwyn mine, St. Austell, Cornwall, England, UK. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the chemical compositon of fluorine (Latin, fluere = "to flow").
Help on Name Pronunciation: Name Pronunciation: Fluellite + Pronunciation Say FLUELLITE
Help on Synonym: Synonym: ICSD 34813
  PDF 37-450

Fluellite Image

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Comments: Tabular, transparent, pseudohexagonal crystals of fluellite.
Location: Tom's quarry, Kapunda, South Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Bariosincosite   Fluellite

Comments: Vivid green crystals of bariosincosite well placed on a matrix covered by colorless, tabular fluellite with some minor metavariscite.
Location: Eugui Quarry, Cantera Azkarate, Eugui, Navarra, Spain. Scale: Rosette size: 0.3 x 0.2 cm.
© Fabre Minerals

Fluellite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7615:1:1.8854
Help on Cell Dimensions: Cell Dimensions: a = 8.546, b = 11.222, c = 21.158, Z = 8; V = 2,029.12 Den(Calc)= 2.16
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: F ddd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.48(1), 3.24(0.7), 3.09(0.6),
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: ( 0 1 0) ( 1 1 1)

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Physical Properties of Fluellite

Help on Cleavage: Cleavage: {010} Indistinct, {111} Indistinct
Help on Color: Color: Golden yellow, Colorless, Dark purple, Black.
Help on Density: Density: 2.18
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Fluorescent, Long UV=creamy white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Fluellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.085 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2289,KPDmeas= 0.2268,KC= 0.2479
Ncalc = 1.54
Help on Optical Data: Optical Data: Biaxial (+), a=1.473-1.49, b=1.49-1.496, g=1.506-1.511, bire=0.0210-0.0330
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Fluellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.23 gm/cc
note: Specific Gravity of Fluellite =2.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002860951
Boson Index = 0.9997139049
Help on Photoelectric: Photoelectric: PEFluellite = 1.09 barns/electron
U=PEFluellite x rElectron Density= 2.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fluellite is Not Radioactive

Fluellite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.06)where (AB)2 (XO4) Zq � x(H2O)
  (42.06.09)Dana Group Fluellite Al2(PO4)F2(OH)•7(H2O) F ddd 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DE.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DE -With only medium-sized cations, (OH, etc.):RO4 = 3:1
08.DE.10 Fluellite Al2(PO4)F2(OH)•7(H2O) F ddd 2/m 2/m 2/m

Other Fluellite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Fluellite :
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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Ask about Fluellite here :
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Print or Cut-and-Paste your Fluellite Specimen Label here :


Dana No: Strunz No: 08.DE.10





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