Mineralogy Database

IMA2000-020 Mineral Data

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General IMA2000-020 Information

Help on Chemical  Formula: Chemical Formula: Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O)
Help on Composition: Composition: Molecular Weight = 1,565.20 gm
   Iron      14.27 %  Fe   18.36 % FeO
   Arsenic   33.51 %  As   51.40 % As2O5
   Hydrogen   3.16 %  H    28.20 % H2O
   Oxygen    49.07 %  O
            ______        ______ 
            100.00 %       97.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+4(AsO3OH)5As2O4(OH)4•20(H2O)
Help on IMA Status: IMA Status: Proposed IMA 2000 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
 

IMA2000-020 Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.561:1:0.5261
Help on Cell Dimensions: Cell Dimensions: a = 10.676, b = 19.027, c = 10.012, Z = 2; V = 2,033.76 Den(Calc)= 2.56
Help on Crystal System: Crystal System: Orthorhombic Space Group: Ortho
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.5(1), 9.31(0.85), 3.586(0.39),4.221(0.35), 3.302(0.24), 6.81(0.24), 5.45(0.23),
 

Physical Properties of IMA2000-020

Help on Color: Color: Beige white.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Earthy (Dull)
 

Optical Properties of IMA2000-020

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.124 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2402,KC= 0.2137
Ncalc = 1.55
Help on Optical Data: Optical Data: Biaxial (?), a=1.615
 

Calculated Properties of IMA2000-020

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.51 gm/cc
note: Specific Gravity of IMA2000-020 =2.56 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0032659481
Boson Index = 0.9967340519
Help on Photoelectric: Photoelectric: PEIMA2000-020 = 26.45 barns/electron
U=PEIMA2000-020 x rElectron Density= 66.44 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
IMA2000-020 is Not Radioactive
 

IMA2000-020 Classification

Help on  Dana Class: Dana Class: 39.02.08.01 (39)Hydrated Acid Phosphates, etc
  (39.02)H2 (AB)5 (XO4)4 � x(H2O)
  (39.02.08)Dana Group
 
39.02.08.01 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho
Help on  Strunz Class: Strunz Class: 08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES
  08.X - Unclassified Strunz PHOSPHATES, ARSENATES, VANADATES
  08.XX -Arsenate, Basic Hydrated
 
08.XX.00 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho
 
08.XX.00 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8•4-5(H2O) P1 1
 
08.XX.00 Cheralite-(Ce)? (Ce,Ca,Th)(P,Si)O4 P 21/n 2/m
 
08.XX.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 41/amd 4/m 2/m 2/m
 
08.XX.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m
 
08.XX.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho
 
08.XX.00 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m
 
08.XX.00 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho
 
08.XX.00 Viseite Ca10Al24(SiO4)6(PO4)7O22F3•72(H2O)(?) I a3d 4/m 3 2/m
 
08.XX.00 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8•4(H2O)(?) C 2/c ? 2/m
 
08.XX.00 Sodium-autunite Na2(UO2)2(PO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m
 
08.XX.00 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m
 
08.XX.00 Slavkovite! Cu13(AsO4)6(AsO3OH)4•23(H2O) P1 1
 
08.XX.00 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho
 
08.XX.00 Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m
 
08.XX.00 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho
 
08.XX.00 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m
 
08.XX.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m
 
08.XX.00 IMA2009-002! Cu3(AsO4)2 P 21/c 2/m
 
08.XX.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 63/m 6/m 2/m 2/m
 
08.XX.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1
 

Other IMA2000-020 Information

Help on See Also: See Also: Links to other databases for IMA2000-020 :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - Mineralienatlas (Deutsch)
7 - Online Mineral Museum
8 - Ruff.Info

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Print or Cut-and-Paste your IMA2000-020 Specimen Label here :

IMA2000-020

Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O)
Dana No: 39.02.08.01 Strunz No: 08.XX.00
Locality:

 

Notes:

 

 
   
 


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