Zinc-melanterite Mineral Data

Zinc-melanterite Mineral Data +

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General Zinc-melanterite Information

Chemical Formula:

(Zn,Cu,Fe++)SO4·7(H2O)

Composition:

Molecular Weight = 286.05 gm

Zinc 13.72 % Zn 17.07 % ZnO

Iron 1.95 % Fe 2.51 % FeO

Copper 6.66 % Cu 8.34 % CuO

Hydrogen 4.93 % H 44.09 % H₂O

Sulfur 11.21 % S 27.99 % SO₃

Oxygen 61.52 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn_0.6Cu_0.3Fe²⁺_0.1(SO₄)·7(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1920

Locality:

Link to MinDat.org Location Data.

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Zinc-melanterite Crystallography

Axial Ratios:

a:b:c =2.1582:1:1.6943

Cell Dimensions:

a = 14.05, b = 6.51, c = 11.03, Z = 4; beta = 105.51° V = 972.13 Den(Calc)= 1.95

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 4.88(1), 3.77(0.7), 4.82(0.45),

Physical Properties of Zinc-melanterite

Cleavage:

[???] Perfect, [???] Distinct

Color:

Green, Yellowish green, Apple green.

Density:

2.02

Diaphaniety:

Transparent to Translucent

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Optical Properties of Zinc-melanterite

Gladstone-Dale:

CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2481,KPDmeas= 0.2395,KC= 0.2453

Optical Data:

Biaxial (+), a=1.477-1.479, b=1.483-1.487, g=1.488-1.489, bire=0.0100-0.0110

Calculated Properties of Zinc-melanterite

Electron Density:

r_electron=2.01 gm/cc
note: r_{Zinc-melanterite}=1.95 gm/cc.

Fermion Index

Fermion Index = 0.00718
Boson Index = 0.99282

Photoelectric:

PE_{Zinc-melanterite}= 10.47 barns/electron
U=PE_{Zinc-melanterite} x r_electron= 21.02 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zinc-melanterite is Not Radioactive

Zinc-melanterite Classification

Dana Class:

29.6.10.3 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.10)Melanterite Group (Heptahydrates, Monoclinic: P21/c)

29.6.10.1 Melanterite FeSO4·7(H2O) P 2₁/c 2/m

29.6.10.2 Boothite CuSO4·7(H2O) P 2₁/c 2/m

29.6.10.3 Zinc-melanterite (Zn,Cu,Fe)SO4·7(H2O) P 2₁/c 2/m

29.6.10.4 Bieberite CoSO4·7(H2O) P 2₁/c 2/m

29.6.10.5 Mallardite MnSO4·7(H2O) P 2₁/c 2/m

29.6.10.6 IMA2003-040! (Mg,Cu)SO4·7H2O P 2₁/c 2/m

Strunz Class:

VI/C.06-50 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size

VI/C.06 - Melanterite group

VI/C.06-10 Melanterite FeSO4·7(H2O) P 2₁/c 2/m

VI/C.06-20 Mallardite MnSO4·7(H2O) P 2₁/c 2/m

VI/C.06-30 Bieberite CoSO4·7(H2O) P 2₁/c 2/m

VI/C.06-40 Boothite CuSO4·7(H2O) P 2₁/c 2/m

VI/C.06-50 Zinc-melanterite (Zn,Cu,Fe)SO4·7(H2O) P 2₁/c 2/m

Other Zinc-melanterite 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 Zinc-melanterite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Zinc-melanterite

(Zn,Cu,Fe++)SO4·7(H2O)
Dana No: 29.6.10.3 Strunz No: VI/C.06-50
Locality:

Notes: