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Arsenocrandallite Mineral Data

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General Arsenocrandallite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O)
Help on Composition: Composition: Molecular Weight = 595.75 gm
   Strontium   11.03 %  Sr   13.04 % SrO
   Calcium     15.14 %  Ca   21.18 % CaO
   Aluminum    13.59 %  Al   25.67 % Al2O3
   Arsenic     18.86 %  As   28.93 % As2O5
   Phosphorus   2.60 %  P     5.96 % P2O5
   Hydrogen     1.18 %  H    10.58 % H2O
   Oxygen      37.60 %  O
              ______        ______ 
              100.00 %      105.37 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2.25Sr0.75Al3(AsO4)1.5(PO4)0.5(OH)5•(H2O)
Help on Environment: Environment: Occurs as a secondary mineral on specimens from a mine dump (Neubulach, Germany).
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: From Neubulach, and in the Clara mine, near Oberwolfach, Black Forest, Germany. At the Centennial Eureka mine, Tintic district, Juab Co., Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For "arsenic" in the composition, and relation to "crandallite."
Help on Name Pronunciation: Name Pronunciation: Arsenocrandallite + Pronunciation Say ARSENOCRANDALLITE
 

Arsenocrandallite Image

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  Arsenocrandallite

Comments: Micro, pale blue botryoids of arsenocrandallite on dark green olivenite and quartz.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenocrandallite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.43926
Help on Cell Dimensions: Cell Dimensions: a = 7.08, c = 17.27, Z = 3; V = 749.70 Den(Calc)= 3.96
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.99(1), 3.55(0.9), 1.769(0.6),
 

Physical Properties of Arsenocrandallite

Help on Cleavage: Cleavage: None
Help on Color: Color: Blue, Blue green.
Help on Density: Density: 3.25
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 Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Arsenocrandallite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.249 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1578,KPDmeas= 0.1923,KC= 0.2103
Ncalc = 1.68 - 1.83
Help on Optical Data: Optical Data: Uniaxial (?), a=1.625, b=1.625, bire=0.0000.
 

Calculated Properties of Arsenocrandallite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Arsenocrandallite =3.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0081080124
Boson Index = 0.9918919876
Help on Photoelectric: Photoelectric: PEArsenocrandallite = 27.09 barns/electron
U=PEArsenocrandallite x rElectron Density= 85.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arsenocrandallite is Not Radioactive
 

Arsenocrandallite Classification

Help on  Dana Class: Dana Class: 42.07.04.01 (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 Arsenocrandallite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Arsenocrandallite :
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

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

Arsenocrandallite

(Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O)
Dana No: 42.07.04.01 Strunz No: 08.BL.10
Locality:

 

Notes:

 

 
   
 


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