Wardite Mineral Data
General Wardite Information
Chemical Formula:
NaAl3(PO4)2(OH)4•2(H2O)
Composition:
Molecular Weight = 397.94 gm
Sodium 5.78 % Na 7.79 % Na2 O
Aluminum 20.34 % Al 38.43 % Al2 O3
Phosphorus 15.57 % P 35.67 % P2 O5
Hydrogen 2.03 % H 18.11 % H2 O
Oxygen 56.29 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
NaAl3 (PO4 )2 (OH)4 •2(H2 O)
Environment:
Alteration product of amblygonite in pegmatites and phosphate deposits.
IMA Status:
Valid Species (Pre-IMA) 1896
Locality:
Clay Canyon, Fairfield, Utah County, Utah, USA. Link to MinDat.org Location Data.
Name Origin:
Named for Henry Augustus Ward (1834-1906), mineral dealer and collector, Rochester, New York, USA.
Name Pronunciation:
Wardite
Synonym:
ICSD 6300
PDF 33-1202
Wardite Image
Images:
Images:
Wardite
Comments: Cream-colored, blocky wardite crystals. The largest wardite crystal is 0.5 cm across.
Location: Taquaral, Minas Gerais, Brazil.
Scale: Picture size 1.5 cm.
© John Veevaert
Images:
Wardite Crystallography
Axial Ratios:
a:c = 1:2.70049
Cell Dimensions:
a = 7.0587, c = 19.062, Z = 4; V = 949.77 Den(Calc)= 2.78
Crystal System:
Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 41 21 2
X Ray Diffraction:
By Intensity(I/Io ): 4.725(1), 2.999(0.75), 3.086(0.75),
Physical Properties of Wardite
Cleavage:
{001} Perfect
Color:
Blue green, Colorless, White, Light green.
Density:
2.81 - 2.87, Average = 2.84
Diaphaneity:
Transparent to Translucent
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Hardness:
5 - Apatite
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Magnetism:
Nonmagnetic
Streak:
white
Optical Properties of Wardite
Gladstone-Dale:
CI meas = 0.048 (Good) - where the CI = (1-KPDmeas /KC ) CI calc = 0.027 (Excellent) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2152,KPDmeas = 0.2107,KC = 0.2212 Ncalc = 1.61 - 1.63
Optical Data:
Uniaxial (+), w=1.59-1.597, e=1.599-1.607, bire=0.0090-0.0100.
Calculated Properties of Wardite
Electron Density:
Bulk Density (Electron Density)=2.79 gm/cc note: Specific Gravity of Wardite =2.78 gm/cc.
Fermion Index:
Fermion Index = 0.0002732229 Boson Index = 0.9997267771
Photoelectric:
PEWardite = 1.47 barns/electronU=PEWardite x r Electron Density= 4.10 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Wardite is Not Radioactive
Wardite Classification
Dana Class:
42.07.08.02 (42) Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.07) where (AB)5 (XO4)3 Zq � x(H2O)
(42.07.08) Cyrilovite Group
42.07.08.01 Cyrilovite NaFe3(PO4)2(OH)4•2(H2O) P 41 21 21,P 43 21 21 4 2 2
42.07.08.02 Wardite NaAl3(PO4)2(OH)4•2(H2O) P 41 21 2 4 2 2
Strunz Class:
08.DL.10 08 - PHOSPHATES, ARSENATES, VANADATES
08.D - Phosphates, etc
08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1
08.DL.10 Cyrilovite NaFe3(PO4)2(OH)4•2(H2O) P 41 21 21,P 43 21 21 4 2 2
08.DL.10 Millisite (Na,K)CaAl6(PO4)4(OH)9•3(H2O) P 41 21 2,P 43 21 2 4 2 2
08.DL.10 Wardite NaAl3(PO4)2(OH)4•2(H2O) P 41 21 2 4 2 2
Other Wardite Information
References:
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990, Dana8)
See Also:
Links to other databases for Wardite :
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 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST
Search for Wardite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Wardite :
Ask about Wardite 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
Espa�ol
Print or Cut-and-Paste your Wardite Specimen Label here :
Wardite
NaAl3(PO4)2(OH)4•2(H2O)
Dana No: 42.07.08.02 Strunz No: 08.DL.10
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.