Zincocopiapite Mineral Data
General Zincocopiapite Information
Chemical Formula:
ZnFe+++4(SO4)6(OH)2•18(H2O)
Composition:
Molecular Weight = 1,223.45 gm
Zinc 5.34 % Zn 6.65 % ZnO
Iron 18.26 % Fe 26.11 % Fe2 O3
Hydrogen 3.13 % H 27.98 % H2 O
Sulfur 15.73 % S 39.26 % SO3
Oxygen 57.54 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
ZnFe3+ 4 (SO4 )6 (OH)2 •18(H2 O)
Environment:
Secondary mineral formed in the oxidation zone of a Pb-Zn deposit in a very arid climate.
IMA Status:
Approved IMA 1964
Locality:
Undisclosed Pb-Zn deposit [Xitieshan mine, south of Mt. Qilianshan, Chaidamu], Qinghai Province, China. Link to MinDat.org Location Data.
Name Origin:
Namrd for its dominant content of zinc and relation to copiapite.
Name Pronunciation:
Zincocopiapite + Pronunciation
Zincocopiapite Image
Images:
Zincocopiapite Crystallography
Axial Ratios:
a:b:c =0.4047:1:0.4008
Cell Dimensions:
a = 7.35, b = 18.16, c = 7.28, Z = 1; alpha = 93.833°, beta = 101.5°, gamma = 99.367° V = 937.40 Den(Calc)= 2.17
Crystal System:
Triclinic - Pinacoidal H-M Symbol ( 1 ) Space Group: P1
X Ray Diffraction:
By Intensity(I/Io ): 9.25(1), 6.12(0.8), 3.56(0.6),
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Physical Properties of Zincocopiapite
Cleavage:
{???} Perfect
Color:
Yellow green.
Density:
2.181
Diaphaneity:
Transparent to Translucent
Hardness:
2 - Gypsum
Luster:
Vitreous (Glassy)
Streak:
greenish yellow
Optical Properties of Zincocopiapite
Gladstone-Dale:
CI meas = 0.006 (Superior) - where the CI = (1-KPDmeas /KC ) CI calc = 0.001 (Superior) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2571,KPDmeas = 0.2558,KC = 0.2574 Ncalc = 1.56
Optical Data:
Biaxial (+), a=1.534, b=1.554, g=1.586, bire=0.0520, 2V(Calc)=80, 2V(Meas)=78.
Calculated Properties of Zincocopiapite
Electron Density:
Bulk Density (Electron Density)=2.20 gm/cc note: Specific Gravity of Zincocopiapite =2.17 gm/cc.
Fermion Index:
Fermion Index = 0.0075225332 Boson Index = 0.9924774668
Photoelectric:
PEZincocopiapite = 8.81 barns/electronU=PEZincocopiapite x r Electron Density= 19.37 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Zincocopiapite is Not Radioactive
Zincocopiapite Classification
Dana Class:
31.10.05.06 (31) Hydrated Sulfates Containing Hydroxyl or Halogen
(31.10) miscellaneous
(31.10.05) Copiapite Group
31.10.05.01 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1
31.10.05.02 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1
31.10.05.03 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1
31.10.05.04 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1
31.10.05.05 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1
31.10.05.06 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1
31.10.05.07 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2•20(H2O) P1 1
Strunz Class:
07.DB.35 07 - SULFATES (SELENATES, TELLURATES)
07.D - Sulfates (selenates, etc.) with additional anions, with H2O
07.DB -With only medium-sized cations; insular octahedra and finite groups
07.DB.35 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2•20(H2O) P1 1
07.DB.35 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1
07.DB.35 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1
07.DB.35 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1
07.DB.35 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1
07.DB.35 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1
07.DB.35 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1
Other Zincocopiapite Information
References:
NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Zincocopiapite :
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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Zincocopiapite
ZnFe+++4(SO4)6(OH)2•18(H2O)
Dana No: 31.10.05.06 Strunz No: 07.DB.35
Locality:
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