Wavellite Mineral Data

Wavellite Mineral Data
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General Wavellite Information

Help on Chemical Formula: Chemical Formula: Al3(PO4)2(OH,F)3•5(H2O)
Help on Composition: Composition: Molecular Weight = 421.48 gm
   Aluminum    19.20 %  Al   36.29 % Al2O3
   Phosphorus  14.70 %  P    33.68 % P2O5
   Hydrogen     3.11 %  H    27.78 % H2O
   Oxygen      60.74 %  O
   Fluorine     2.25 %  F     2.25 % F
                 -   %   F    -0.95 % -O=F2    
              ______        ______ 
              100.00 %       99.05 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al3(PO4)2(OH)3F0.5•5(H2O)
Help on Environment: Environment: Secondary mineral common in aluminous low-grade metamorphic rocks and phosphate rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1805
Help on Locality: Locality: High Down quarry, Barnstaple, Devonshire, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after William Wavell (?-1829) of England who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Wavellite + Pronunciation Say WAVELLITE
Help on Synonym: Synonym: Coeruleolactite - mixture of planerite + variscite + wavellite
  ICSD 26816
  PDF 41-1360
 

Wavellite Image

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Wavellite

Comments: Greenish yellow spray of wavellite crystals.
Location: Slate Mountains, El Dorado County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
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Wavellite

Comments: Green prismatic crystals of wavellite in complete radial stellar aggregate.
Location: Flinders Range, South Australia, Australia. Scale: Sphere size 8 mm.
© Tom Loomis / Dakota Matrix

Wavellite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8795:1:0.4029
Help on Cell Dimensions: Cell Dimensions: a = 15.25, b = 17.338, c = 6.986, Z = 6; V = 1,847.13 Den(Calc)= 2.27
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.42(1), 8.67(1), 3.22(0.6),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

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

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Click Here for Large Wavellite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Araki T , Zoltai T , Zeitschrift fur Kristallographie , 127 (1968) p.21-33, The crystal structure of wavellite, Locality: Montgomery County, Arkansas, USA

 

Physical Properties of Wavellite

Help on Cleavage: Cleavage: {110} Perfect, {101} Good
Help on Color: Color: Blue, Brown, Brownish black, Colorless, Green.
Help on Density: Density: 2.3 - 2.4, Average = 2.34
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Fibrous - Thin, elongated fractures produced by crystal forms or intersecting cleavages (e.g. asbestos).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Habit: Habit: Stellate - Occurs as spherical, radial aggregates radiating from a "star" like point.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellow sky blue, Long UV=yellow strong sky blue.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Wavellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2372,KPDmeas= 0.2291,KC= 0.2323
Ncalc = 1.53 - 1.56
Help on Optical Data: Optical Data: Biaxial (+), a=1.52-1.535, b=1.526-1.543, g=1.545-1.561, bire=0.0250-0.0260, 2V(Calc)=60-70, 2V(Meas)=72. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): bluish green or green.
Help on Pleochroism (y): Pleochroism (y): pale yellow or colorless.
 

Calculated Properties of Wavellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.39 gm/cc
note: Specific Gravity of Wavellite =2.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002961929
Boson Index = 0.9997038071
Help on Photoelectric: Photoelectric: PEWavellite = 1.34 barns/electron
U=PEWavellite x rElectron Density= 3.22 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wavellite is Not Radioactive
 

Wavellite Classification
Help on Dana Class: Dana Class: 42.10.02.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.10)where (AB)3 (XO4)2 Zq · x(H2O)
  (42.10.02)Wavellite Group
 
42.10.02.01 Wavellite Al3(PO4)2(OH,F)3•5(H2O) Pcmn 2/m 2/m 2/m
 
42.10.02.02 Allanpringite! Fe3(PO4)2(OH)3•5H2O P 21/n pseudo-ortho 2/m
Help on Strunz Class: Strunz Class: 08.DC.50 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
 
08.DC.50 Wavellite Al3(PO4)2(OH,F)3•5(H2O) Pcmn 2/m 2/m 2/m
 
08.DC.50 Allanpringite! Fe3(PO4)2(OH)3•5H2O P 21/n pseudo-ortho 2/m
 

Other Wavellite Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Sinkankas66)
Help on See Also: See Also: Links to other databases for Wavellite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Glendale Community College
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - Scandinavian mineral gallery
18 - WWW-MINCRYST
19 - YupRocks
20 - theimage

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Ask about Wavellite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Wavellite Specimen Label here :

Wavellite

Al3(PO4)2(OH,F)3•5(H2O)
Dana No: 42.10.02.01 Strunz No: 08.DC.50
Locality:

 

Notes: