Mineralogy Database

Dolerophanite Mineral Data

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General Dolerophanite Information

Help on Chemical  Formula: Chemical Formula: Cu2(SO4)O
Help on Composition: Composition: Molecular Weight = 239.16 gm
   Copper  53.14 %  Cu   66.52 % CuO
   Sulfur  13.41 %  S    33.48 % SO3
   Oxygen  33.45 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2(SO4)O
Help on Environment: Environment: Secondary copper mineral in sulfide veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1873
Help on Locality: Locality: Vesuvio (Vesuvius), Napoli, Campania, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek "DOLEROS" = misleading and "PHANESTAI" = appearance, in allusion to its low content of copper
Help on Name Pronunciation: Name Pronunciation: Dolerophanite + Pronunciation Say DOLEROPHANITE

Dolerophanite Image

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  Dolerophanite   Chalcanthite   Fedotovite

Comments: Brown crystals of dolerophanite with blue chalcanthite and green fedotovite.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Dolerophanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4789:1:1.2084
Help on Cell Dimensions: Cell Dimensions: a = 9.335, b = 6.312, c = 7.628, Z = 4; beta = 122.242° V = 380.16 Den(Calc)= 4.18
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.623(1), 6.443(0.5), 2.615(0.4),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 3 3) ( 1 1 0) ( 0 1 0) ( 1 1 1) ( 4 0 3) ( 1 0 0) ( 0 0 1)

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Physical Properties of Dolerophanite

Help on Cleavage: Cleavage: {101} Perfect
Help on Color: Color: Brown, Black.
Help on Density: Density: 4.17
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: yellowish brown

Optical Properties of Dolerophanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.12 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.117 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1926,KPDmeas= 0.193,KC= 0.1723
Ncalc = 1.72
Help on Optical Data: Optical Data: Biaxial (+), a=1.715, b=1.82, g=1.88, bire=0.1650, 2V(Calc)=70, 2V(Meas)=85.

Calculated Properties of Dolerophanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.99 gm/cc
note: Specific Gravity of Dolerophanite =4.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011661624
Boson Index = 0.9988338376
Help on Photoelectric: Photoelectric: PEDolerophanite = 24.31 barns/electron
U=PEDolerophanite x rElectron Density= 96.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dolerophanite is Not Radioactive

Dolerophanite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.02)where (A B)2 XO4 Zq
  (30.02.02)Dana Group Dolerophanite Cu2(SO4)O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.BB.20 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BB -With medium-sized cations
07.BB.20 Dolerophanite Cu2(SO4)O C 2/m 2/m

Other Dolerophanite Information

Help on References: References: NAME( Dana7) 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 Dolerophanite :
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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Dana No: Strunz No: 07.BB.20





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