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 % Fe₂O₃

Hydrogen 3.13 % H 27.98 % H₂O

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(H₂O)

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

Comments: Pale yellow zincocopiapite coating on quartz.
Location: Les Valettes, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 9.25(1), 6.12(0.8), 3.56(0.6),

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

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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:

PE_{Zincocopiapite}= 8.81 barns/electron
U=PE_{Zincocopiapite} x rElectron 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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