General Zincocopiapite Information
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Chemical Formula: |
ZnFe+++4(SO4)6(OH)2·18(H2O) |
Composition: |
Molecular Weight = 1,223.45 gm |
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Zinc 5.34 % Zn 6.65 % ZnO |
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Iron 18.26 % Fe 26.11 % Fe2O3 |
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Hydrogen 3.13 % H 27.98 % H2O |
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Sulfur 15.73 % S 39.26 % SO3 |
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Oxygen 57.54 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
ZnFe3+4(SO4)6(OH)2·18(H2O) |
IMA Status: |
Approved IMA 1964 |
Locality: |
Link to MinDat.org Location Data. |
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Zincocopiapite Image |
Images:
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Zincocopiapite Crystallography
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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 - PinacoidalH-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
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Cleavage: |
[???] Perfect |
Color: |
Yellow green. |
Density: |
2.181 |
Diaphaniety: |
Transparent to Translucent |
Hardness: |
2 - Gypsum |
Luster: |
Vitreous (Glassy) |
Streak: |
greenish yellow |
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Optical Properties of Zincocopiapite
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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 |
Optical Data: |
Biaxial (+), a=1.534, b=1.554, g=1.586, bire=0.0520, 2V(Calc)=80, 2V(Meas)=78. |
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Calculated Properties of Zincocopiapite
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Electron Density: |
relectron=2.20 gm/cc note: rZincocopiapite =2.17 gm/cc. |
Fermion Index |
Fermion Index = 0.00752 Boson Index = 0.99248 |
Photoelectric: |
PEZincocopiapite = 8.81 barns/electron U=PEZincocopiapite x relectron= 19.37 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Zincocopiapite is Not Radioactive |
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Zincocopiapite Classification
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Dana Class: |
31.10.5.6 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.10)miscellaneous |
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(31.10.5)Copiapite Group |
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31.10.5.1 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1 |
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31.10.5.2 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1 |
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31.10.5.3 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1 |
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31.10.5.4 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1 |
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31.10.5.5 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1 |
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31.10.5.6 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1 |
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31.10.5.7 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2·20(H2O) P1 1 |
Strunz Class: |
VI/D.10-70 VI - Sulfates,Chromates,Molybdates and Tungstates |
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VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size |
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VI/D.10 - Copiapite group, Botryogen - Chaidamuite |
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VI/D.10-10 Botryogen MgFe(SO4)2(OH)·7(H2O) P 21/n 2/m |
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VI/D.10-20 Zincobotryogen (Zn,Mg,Mn)Fe(SO4)2(OH)·7(H2O) P 21/n 2/m |
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VI/D.10-30 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1 |
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VI/D.10-40 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1 |
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VI/D.10-50 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1 |
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VI/D.10-60 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1 |
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VI/D.10-70 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1 |
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VI/D.10-80 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2·20(H2O) P1 1 |
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VI/D.10-90 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1 |
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VI/D.10-100 Guildite CuFe(SO4)2(OH)·4(H2O) P 21/m 2/m |
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VI/D.10-110 Chaidamuite (Zn,Fe)Fe(SO4)2(OH)·4(H2O) P1 1 |
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Other Zincocopiapite Information
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References: |
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 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 -École des Mines de Paris
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Print or Cut-and-Paste your Zincocopiapite Specimen Label here :
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Zincocopiapite
ZnFe+++4(SO4)6(OH)2·18(H2O)
Dana No: 31.10.5.6 Strunz No: VI/D.10-70
Locality:
Notes:
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