Dolerophanite Mineral Data
General Dolerophanite Information
Chemical Formula:
Cu2(SO4)O
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
Empirical Formula:
Cu2 (SO4 )O
Environment:
Secondary copper mineral in sulfide veins.
IMA Status:
Valid Species (Pre-IMA) 1873
Locality:
Vesuvio (Vesuvius), Napoli, Campania, Italy. Link to MinDat.org Location Data.
Name Origin:
From the Greek "DOLEROS" = misleading and "PHANESTAI" = appearance, in allusion to its low content of copper
Name Pronunciation:
Dolerophanite + Pronunciation
Dolerophanite Image
Images:
Dolerophanite Crystallography
Axial Ratios:
a:b:c =1.4789:1:1.2084
Cell Dimensions:
a = 9.335, b = 6.312, c = 7.628, Z = 4; beta = 122.242° V = 380.16 Den(Calc)= 4.18
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
X Ray Diffraction:
By Intensity(I/Io ): 3.623(1), 6.443(0.5), 2.615(0.4),
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Physical Properties of Dolerophanite
Cleavage:
{101} Perfect
Color:
Brown, Black.
Density:
4.17
Diaphaneity:
Translucent to Opaque
Hardness:
3 - Calcite
Luster:
Sub Metallic
Streak:
yellowish brown
Optical Properties of Dolerophanite
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
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
Electron Density:
Bulk Density (Electron Density)=3.99 gm/cc note: Specific Gravity of Dolerophanite =4.18 gm/cc.
Fermion Index:
Fermion Index = 0.0011661624 Boson Index = 0.9988338376
Photoelectric:
PEDolerophanite = 24.31 barns/electronU=PEDolerophanite x r Electron Density= 96.87 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Dolerophanite is Not Radioactive
Dolerophanite Classification
Dana Class:
30.02.02.01 (30) Anhydrous Sulfates Containing Hydroxyl or Halogen
(30.02) where (A B)2 XO4 Zq
(30.02.02) Dana Group
30.02.02.01 Dolerophanite Cu2(SO4)O C 2/m 2/m
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
References:
NAME( Dana7) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Dolerophanite Specimen Label here :
Dolerophanite
Cu2(SO4)O
Dana No: 30.02.02.01 Strunz No: 07.BB.20
Locality:
Notes: