Chenevixite Mineral Data


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General Chenevixite Information

Help on Chemical  Formula: Chemical Formula: Cu2Fe+++2(AsO4)2(OH)4·(H2O)
Help on Composition: Composition: Molecular Weight = 602.67 gm
   Iron      18.53 %  Fe   26.50 % Fe2O3
   Copper    21.09 %  Cu   26.40 % CuO
   Arsenic   24.86 %  As   38.14 % As2O5
   Hydrogen   1.00 %  H     8.97 % H2O
   Oxygen    34.51 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2Fe3+2(AsO4)2(OH)4·(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1866
Help on Locality: Locality: Link to MinDat.org Location Data.
 

Chenevixite Image

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Chenevixite

Comments: Green micro crystals of chenevixite on matrix.
Location: Majuba Hill, Pershing County, Nevada, USA. Scale: Size Not Given.
© John Veevaert

Chenevixite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.8918:1:1.1031
Help on Cell Dimensions: Cell Dimensions: a = 15.006, b = 5.189, c = 5.724, Z = 2; beta = 102.25° V = 435.56 Den(Calc)= 4.59
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.56(1), 2.553(0.7), 3.82(0.5),
 

Physical Properties of Chenevixite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow green, Dark green, Olive green.
Help on Density: Density: 3.9
Help on Diaphaniety: Diaphaniety: Subtranslucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Compact - Occurs as a compact mass.
Help on Habit: Habit: Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: greenish yellow
 

Optical Properties of Chenevixite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.131 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.039 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2121,KPDmeas= 0.2496,KC= 0.2206
Help on Optical Data: Optical Data: Biaxial (+), a=1.92, b=1.96, g=2.04, bire=0.1200
 

Calculated Properties of Chenevixite

Help on Electron Density: Electron Density:

relectron=4.36 gm/cc
note: rChenevixite =4.59 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00409
Boson Index = 0.99591
Help on Photoelectric: Photoelectric:

PEChenevixite = 32.02 barns/electron
U=PEChenevixite x relectron= 139.51 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chenevixite is Not Radioactive

 

Chenevixite Classification

Help on  Dana Class: Dana Class: 42.7.10.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.7)where (AB)5 (XO4)3 Zq · x(H2O)
  (42.7.10)Dana Group
 
42.7.10.1 Chenevixite Cu2Fe2(AsO4)2(OH)4·(H2O) P 21/m 2/m
 
42.7.10.2 Luetheite Cu2Al2(AsO4)2(OH)4·(H2O) P 21/m 2/m
Help on  Strunz Class: Strunz Class: VII/D.16-20 VII - Phosphates, Arsenates and Vanadates
  VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe
  VII/D.16 - Luetheite - Akrochordite series
 
VII/D.16-10 Luetheite Cu2Al2(AsO4)2(OH)4·(H2O) P 21/m 2/m
 
VII/D.16-20 Chenevixite Cu2Fe2(AsO4)2(OH)4·(H2O) P 21/m 2/m
 
VII/D.16-30 Akrochordite Mn4Mg(AsO4)2(OH)4·4(H2O) P 21/c 2/m
 

Other Chenevixite Information

Help on References: References: 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 Chenevixite :
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 -École des Mines de Paris

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Chenevixite

Cu2Fe+++2(AsO4)2(OH)4·(H2O)
Dana No: 42.7.10.1 Strunz No: VII/D.16-20
Locality:

 

Notes:

 

 
   
 
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