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Arsenogoyazite Mineral Data

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General Arsenogoyazite Information

Help on Chemical  Formula: Chemical Formula: (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O)
Help on Composition: Composition: Molecular Weight = 511.39 gm
   Barium       2.69 %  Ba    3.00 % BaO
   Strontium   10.28 %  Sr   12.16 % SrO
   Calcium      2.35 %  Ca    3.29 % CaO
   Aluminum    15.83 %  Al   29.91 % Al2O3
   Arsenic     19.05 %  As   29.21 % As2O5
   Phosphorus   4.24 %  P     9.71 % P2O5
   Hydrogen     1.18 %  H    10.57 % H2O
   Oxygen      40.67 %  O
   Fluorine     3.72 %  F     3.72 % F
                 -   %   F    -1.56 % -O=F2    
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr0.6Ca0.3Ba0.1Al3(AsO4)1.3(PO4)0.7(OH)4F�(H2O)
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Clara mine, Oberwolfach, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the chemical composition and it's relationship to goyazite.
Help on Name Pronunciation: Name Pronunciation: Arsenogoyazite + Pronunciation Say ARSENOGOYAZITE
Help on Synonym: Synonym: Weilerite
 

Arsenogoyazite Image

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  Arsenogoyazite   Olivenite

Comments: White micro-botryoids of arsenogoyazite with light green acicular crystal sprays of olivenite and dark green malachite on brown limonite.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Arsenogoyazite

Comments: Clear, white micro (<0.25mm) rhombohedral arsenogoyazite crystals.
Location: Clara mine, Schwarzwald, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Arsenogoyazite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.4169
Help on Cell Dimensions: Cell Dimensions: a = 7.1, c = 17.16, Z = 3; V = 749.14 Den(Calc)= 3.40
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.03(1), 3.56(0.8), 5.84(0.7),
 

Physical Properties of Arsenogoyazite

Help on Cleavage: Cleavage: None
Help on Color: Color: Greenish white, Gray green, Yellow, Light green.
Help on Density: Density: 3.33 - 3.35, Average = 3.34
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Arsenogoyazite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1882,KPDmeas= 0.1916,KC= 0.1931
Ncalc = 1.64 - 1.66
Help on Optical Data: Optical Data: Uniaxial (?), a=1.64, b=1.64, bire=0.0000.
 

Calculated Properties of Arsenogoyazite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.21 gm/cc
note: Specific Gravity of Arsenogoyazite =3.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEArsenogoyazite = 36.36 barns/electron
U=PEArsenogoyazite x rElectron Density= 116.73 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arsenogoyazite is Not Radioactive
 

Arsenogoyazite Classification

Help on  Dana Class: Dana Class: 42.07.04.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.04)Arsenocrandallite Group
 
42.07.04.01 Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O) R 3m 3m
 
42.07.04.02 Philipsbornite PbAl3(AsO4)2(OH)5•(H2O) R 3m-,R 3m Trig
 
42.07.04.03 Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O) R 3m 3 2/m
 
42.07.04.04 Segnitite PbFe3H(AsO4)2(OH)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 Arsenogoyazite Information

Help on References: References: NAME( Dana8) 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 Arsenogoyazite :
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

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Arsenogoyazite

(Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O)
Dana No: 42.07.04.03 Strunz No: 08.BL.10
Locality:

 

Notes:

 

 
   
 


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