Goyazite Mineral Data + Say GOYAZITE


[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974

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 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 Diaphaniety: Diaphaniety: 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: None.
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
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:

relectron=3.15 gm/cc
note: rGoyazite =3.22 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01352
Boson Index = 0.98648
Help on Photoelectric: Photoelectric:

PEGoyazite = 21.69 barns/electron
U=PEGoyazite x relectron= 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: 42.7.3.3 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.7)where (AB)5 (XO4)3 Zq · x(H2O)
  (42.7.3)Dana Group
 
42.7.3.1 Crandallite CaAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
42.7.3.2 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 Cm m
 
42.7.3.3 Goyazite SrAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
42.7.3.4 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5·(H2O) R 3m 3m
 
42.7.3.5 Plumbogummite PbAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
42.7.3.6 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
42.7.3.7 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
42.7.3.8 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: VII/B.36-30 VII - Phosphates, Arsenates and Vanadates
  VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb
  VII/B.36 - Crandallite group
 
VII/B.36-10 Crandallite CaAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
VII/B.36-20 Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5·(H2O) R 3m 3m
 
VII/B.36-30 Goyazite SrAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
VII/B.36-40 Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O) R 3m 3 2/m
 
VII/B.36-50 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 Cm m
 
VII/B.36-60 Arsenogorceixite! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 R 3m 3 2/m
 
VII/B.36-70 Plumbogummite PbAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m
 
VII/B.36-80 Philipsbornite PbAl3(AsO4)2(OH)5·(H2O) R 3m-,R 3m Trig
 
VII/B.36-90 Waylandite BiAl3(PO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-100 Eylettersite (Th,Pb)1-xAl3(PO4,SiO4)2(OH)6(?) R 3m 3 2/m
 
VII/B.36-110 Florencite-(Ce) CeAl3(PO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-120 Arsenoflorencite-(Ce) (Ce,La)Al3(AsO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-125 Arsenoflorencite-(La)* (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 R 3m 3m
 
VII/B.36-130 Florencite-(La) (La,Ce)Al3(PO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-135 Arsenoflorencite-(Nd)* (Nd,La,Ce,Ba)(Al,Fe)3(AsO4,PO4)2(OH)6 R 3m 3m
 
VII/B.36-140 Florencite-(Nd) (Nd,Ce)Al3(PO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-150 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-150* Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5·(H2O) R 3m 3m
 
VII/B.36-152 Graulichite-(Ce)! CeFe3(AsO4)2(OH)6 R 3m 3 2/m
 
VII/B.36-155 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
VII/B.36-160 Dussertite BaFe3(AsO4)2(OH)5 R 3m 3m
 
VII/B.36-170 Zairite Bi(Fe,Al)3(PO4)2(OH)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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

Search for Goyazite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Goyazite :

AA Mineral Specimens
B & L Fine Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
Heliodor
John Betts Fine Minerals
Mason's Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz
T G Fine Minerals
Wrights Rock Shop

Translate Goyazite Mineral Data :

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 Español

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

Goyazite

SrAl3(PO4)2(OH)5·(H2O)
Dana No: 42.7.3.3 Strunz No: VII/B.36-30
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links