Chalcophanite Mineral Data + Say CHALCOPHANITE


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General Chalcophanite Information
Help on Chemical Formula: Chemical Formula: (Zn,Fe++,Mn++)Mn++++3O7·3(H2O)
Help on Composition: Composition: Molecular Weight = 459.22 gm
   Manganese  40.68 %  Mn    6.18 % MnO / 56.79 % MnO2
   Zinc       17.09 %  Zn   21.27 % ZnO
   Iron        6.08 %  Fe    7.82 % FeO
   Hydrogen    1.32 %  H    11.77 % H2O
   Oxygen     34.84 %  O
             ______        ______ 
             100.00 %      103.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn1.2Fe2+0.5Mn2+0.4Mn4+3O7·3(H2O)
Help on Environment: Environment: Common component of the weathered zone above Zn-Mn base metal deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1875
Help on Locality: Locality: Sterling Hill, near Ogdensburg, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for "copper" and "to appear," for the mineral's change in color on ignition.
Help on Synonym: Synonym: Hydrofranklinite
  ICSD 202700
  PDF 15-807
 

Chalcophanite Image

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Chalcophanite

Comments: Large mass of rounded gray-black chalcophanite.
Location: Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA. Scale: 14x11x7 cm.
© John Betts - Fine Minerals

Chalcophanite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.76038
Help on Cell Dimensions: Cell Dimensions: a = 7.533, c = 20.794, Z = 5; V = 1,021.89 Den(Calc)= 3.73
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.96(1), 3.5(0.6), 4.08(0.5),
Help on Forms: Forms:

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Forms: [ 1 0 1] [ 0 0 1]

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Post J E , Appleman D E , American Mineralogist , 73 (1988) p.1401-1404, Chalcophanite, ZnMn3O7.3(H2O): New crystal-structure determinations, Locality: Bisbee, Arizona, Note: U(1,2) of O3 altered to match symmetry constraints, Note: H positions determined by energy modelling

View Additional jPOWD Structure files for Chalcophanite
[1]
 

Physical Properties of Chalcophanite

Help on Cleavage: Cleavage: [???] Perfect
Help on Color: Color: Blue, Bluish black, Black.
Help on Density: Density: 3.91
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: brown
 

Optical Properties of Chalcophanite

Help on Dichroism (e): Dichroism (e): deep red.
Help on Dichroism (w): Dichroism (w): opaque black.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.414 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.482 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.4625,KPDmeas= 0.4412,KC= 0.3121
Help on Optical Data: Optical Data: Uniaxial (-), e=2.72, w=2.73, bire=0.0100.
Help on RL Anisotrophism: RL Anisotrophism: Very strong.
Help on RL Color: RL Color: White with deep red internal reflections.
Help on RL Pleochroism: RL Pleochroism: Very strong, in gray and white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Chalcophanite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   11.40   38.00 
   
 420 nm   11.00   36.60 
 440 nm   10.60   35.20 
 460 nm   10.30   33.80 
 480 nm   10.00   32.20 
 500 nm    9.80   30.70 
 520 nm    9.80   29.20 
 540 nm    9.70   28.00 
 560 nm    9.50   26.90 
 580 nm    9.30   26.20 
 600 nm    9.30   25.80 
 620 nm    9.20   25.40 
 640 nm    9.20   24.80 
 660 nm    9.00   24.40 
 680 nm    8.90   24.00 
 700 nm    8.90   23.80 
Calculated Relative Intensity Colors of Chalcophanite in Air
Relative
Intensity		    0% 100% 200% 300% 400% 500% 600% 700% 800% 900% 940%
R1                      
R2                      
 

Calculated Properties of Chalcophanite

Help on Electron Density: Electron Density:

relectron=3.75 gm/cc
note: rChalcophanite =3.91 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00846
Boson Index = 0.99154
Help on Photoelectric: Photoelectric:

PEChalcophanite = 20.91 barns/electron
U=PEChalcophanite x relectron= 78.33 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chalcophanite is Not Radioactive
 

Chalcophanite Classification
Help on Dana Class: Dana Class: 7.8.2.1 (7)Multiple Oxides
  (7.8)where A B (O)2·x(H2O)
  (7.8.2)Dana Group
 
7.8.2.1 Chalcophanite (Zn,Fe,Mn)Mn3O7·3(H2O) R 3 3
 
7.8.2.2 Aurorite (Mn,Ag,Ca)Mn3O7·3(H2O) P1 1
 
7.8.2.3 Jianshuiite (Mg,Mn)Mn3O7·3(H2O) R 3 or R 3 Trig
 
7.8.2.4 Ernienickelite NiMn3O7·3(H2O) R 3 or R 3 Trig
Help on Strunz Class: Strunz Class: IV/F.11-20 IV - Oxides
  IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
  IV/F.11 - Jiansuiite - Birnessite series
 
IV/F.11-05 Jianshuiite (Mg,Mn)Mn3O7·3(H2O) R 3 or R 3 Trig
 
IV/F.11-10 Aurorite (Mn,Ag,Ca)Mn3O7·3(H2O) P1 1
 
IV/F.11-15 Ernienickelite NiMn3O7·3(H2O) R 3 or R 3 Trig
 
IV/F.11-20 Chalcophanite (Zn,Fe,Mn)Mn3O7·3(H2O) R 3 3
 
IV/F.11-25 Cianciulliite Mn(Mg,Mn)2Zn2(OH)10·2-4(H2O) C 2/m 2/m
 
IV/F.11-30 Birnessite (Na,Ca,K)x(Mn,Mn)2O4·1.5(H2O) C 2/m 2/m
 

Other Chalcophanite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Chalcophanite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 - Franklin Minerals(Dunn) 6 - Franklin Minerals(Palache) 7 -Google Images 8 -Google Scholar 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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Chalcophanite

(Zn,Fe++,Mn++)Mn++++3O7·3(H2O)
Dana No: 7.8.2.1 Strunz No: IV/F.11-20
Locality:

 

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