Goyazite Mineral Data

Goyazite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Goyazite Information

Help on Chemical Formula: Chemical Formula: SrAl3(PO4)2(OH)5•(H2O)
Help on Composition: Composition: Molecular Weight = 461.56 gm
   Strontium   18.98 %  Sr   22.45 % SrO
   Aluminum    17.54 %  Al   33.14 % Al2O3
   Phosphorus  13.42 %  P    30.75 % P2O5
   Hydrogen     1.53 %  H    13.66 % H2O
   Oxygen      48.53 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SrAl3(PO4)2(OH)5•(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1884
Help on Locality: Locality: Serra de Congonhas, Diamantina, Minas Gerais, Brazil Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the province of Goyaz, Brazil.
Help on Name Pronunciation: Name Pronunciation: Goyazite Say GOYAZITE
Help on Synonym: Synonym: Bowmanite
  Hamlinite
  ICSD 68170
  Lusungite
  PDF 34-152
 

Goyazite Image

Click Here for Larger Goyazite Image in a New Browser Window Images:
Click Here for Larger Goyazite Image

Goyazite

Comments: Flat, tabular crystals of goyazite on dolomite.
Location: Langenbach quarry, Binntal, Valais, Switzerland. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Goyazite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.36363
Help on Cell Dimensions: Cell Dimensions: a = 7.0218, c = 16.597, Z = 3; V = 708.69 Den(Calc)= 3.24
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.965(1), 5.704(0.65), 2.209(0.45),
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 2 1) ( 0 1 1) ( 0 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Goyazite 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


Kato T , Mineralogical Journal , 13 (1987) p.390-396, Further refinement of the goyazite structure, Locality: Palermo mine, North Groton, New Hampshire, USA

 

Physical Properties of Goyazite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Lemon yellow, Pink, Colorless.
Help on Density: Density: 3.16 - 3.28, Average = 3.22
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Blocky - Rhombohedral - Crystal shape resembles rhomohedrons.
Help on Habit: Habit: Disseminated - Occurs in small, distinct particles dispersed in matrix.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Goyazite

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.048 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1929,KPDmeas= 0.1941,KC= 0.2039
Ncalc = 1.64 - 1.67
Help on Optical Data: Optical Data: Uniaxial (+), w=1.62, e=1.63, bire=0.0100.
 

Calculated Properties of Goyazite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Goyazite =3.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEGoyazite = 21.69 barns/electron
U=PEGoyazite x rElectron Density= 68.39 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Goyazite is Not Radioactive
 

Goyazite Classification
Help on Dana Class: Dana Class: 42.07.03.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq · x(H2O)
  (42.07.03)Crandallite Group
 
42.07.03.01 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.02 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m
 
42.07.03.03 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.04 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m
 
42.07.03.05 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.06 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
42.07.03.07 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
42.07.03.08 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
Help on Strunz Class: Strunz Class: 08.BL.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1
 
08.BL.10 Arsenogorceixite! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 R 3m 3 2/m
 
08.BL.10 Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O) R 3m 3m
 
08.BL.10 Ferrazite? (Pb,Ba)3(PO4)2•8(H2O)(?) Tri
 
08.BL.10 Arsenowaylandite* BiAl3(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O) R 3m 3 2/m
 
08.BL.10 Dussertite BaFe3(AsO4)2(OH)5 R 3m 3m
 
08.BL.10 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m
 
08.BL.10 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
08.BL.10 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m
 
08.BL.10 Philipsbornite PbAl3(AsO4)2(OH)5•(H2O) R 3m-,R 3m Trig
 
08.BL.10 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Segnitite PbFe3H(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
 

Other Goyazite 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 Goyazite :
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
15 - WWW-MINCRYST

Search for Goyazite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Goyazite :

A Bijoux Google Search for Goyazite
Adam's Minerals Google Search for Goyazite
Cape Minerals Google Search for Goyazite
Dakota Matrix Minerals Google Search for Goyazite
Excalibur Mineral Corp. Google Search for Goyazite
Exceptional Minerals Google Search for Goyazite
John Betts Fine Minerals Search for Goyazite
McDougall Minerals Google Search for Goyazite
Mineral News Website Link
Rock and Mineral Shows Google Search for Goyazite
Weinrich Minerals, Inc. Google Search for Goyazite

Ask about Goyazite 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 Goyazite Specimen Label here :

Goyazite

SrAl3(PO4)2(OH)5•(H2O)
Dana No: 42.07.03.03 Strunz No: 08.BL.10
Locality:

 

Notes: