Zincocopiapite Mineral Data

Zincocopiapite Mineral Data +

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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)

IMA Status:

Approved IMA 1964

Locality:

Link to MinDat.org Location Data.

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 - PinacoidalH-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),

Forms:

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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

Diaphaniety:

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

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:

r_electron=2.20 gm/cc
note: r_{Zincocopiapite}=2.17 gm/cc.

Fermion Index

Fermion Index = 0.00752
Boson Index = 0.99248

Photoelectric:

PE_{Zincocopiapite}= 8.81 barns/electron
U=PE_{Zincocopiapite} x r_electron= 19.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zincocopiapite is Not Radioactive

Zincocopiapite Classification

Dana Class:

31.10.5.6 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.10)miscellaneous

(31.10.5)Copiapite Group

31.10.5.1 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.2 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.3 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.4 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.5 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1

31.10.5.6 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1

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

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.10 - Copiapite group, Botryogen - Chaidamuite

VI/D.10-10 Botryogen MgFe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

VI/D.10-20 Zincobotryogen (Zn,Mg,Mn)Fe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

VI/D.10-30 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1

VI/D.10-40 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-50 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-60 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-70 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1

VI/D.10-80 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2·20(H2O) P1 1

VI/D.10-90 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-100 Guildite CuFe(SO4)2(OH)·4(H2O) P 2₁/m 2/m

VI/D.10-110 Chaidamuite (Zn,Fe)Fe(SO4)2(OH)·4(H2O) P1 1

Other Zincocopiapite Information

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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Zincocopiapite

ZnFe+++4(SO4)6(OH)2·18(H2O)
Dana No: 31.10.5.6 Strunz No: VI/D.10-70
Locality:

Notes: