Gunningite Mineral Data

Gunningite Mineral Data +

General Gunningite Information

Chemical Formula:

(Zn,Mn)SO4·(H2O)

Composition:

Molecular Weight = 176.86 gm

Manganese 7.77 % Mn 10.03 % MnO

Zinc 27.73 % Zn 34.52 % ZnO

Hydrogen 1.14 % H 10.19 % H₂O

Sulfur 18.13 % S 45.27 % SO₃

Oxygen 45.23 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn_0.75Mn²⁺_0.25(SO₄)·(H₂O)

IMA Status:

Approved IMA 1962

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 71348

PDF 33-1476

Gunningite Image

Images:

Gunningite

Comments: White crust of gunningite on massive sulfide ore.
Location: Brunswick 12 Open Pit, Bathurst, New Brunswick, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gunningite Crystallography

Axial Ratios:

a:b:c =0.9965:1:0.9166

Cell Dimensions:

a = 7.56, b = 7.586, c = 6.954, Z = 4; beta = 115.933° V = 358.65 Den(Calc)= 3.28

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/a

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

By Intensity(I/I_o): 3.42(1), 4.77(0.55), 3.07(0.45),

Crystal Structure:

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Wildner M , Giester G , Neues Jahrbuch fur Mineralogie, Monatshefte , 1991 (1991) p.296-306, The crystal structures of kieserite-type compounds., I. Crystal structures of Me(II)SO4*H2O (Me = Mn,Fe,Co,Ni,Zn), Locality: synthetic

Physical Properties of Gunningite

Cleavage:

[???] Indistinct

Color:

White.

Density:

3.195

Diaphaniety:

Transparent to Translucent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Gunningite

Gladstone-Dale:

CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1805,KPDmeas= 0.1853,KC= 0.1891

Optical Data:

Biaxial (+), a=1.57, b=1.576, g=1.63, bire=0.0600

Calculated Properties of Gunningite

Electron Density:

r_electron=3.13 gm/cc
note: r_Gunningite=3.20 gm/cc.

Fermion Index

Fermion Index = 0.01294
Boson Index = 0.98706

Photoelectric:

PE_Gunningite= 16.62 barns/electron
U=PE_Gunningite x r_electron= 52.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Gunningite is Not Radioactive

Gunningite Classification

Dana Class:

29.6.2.5 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.2)Kieserite Group (Mono-hydrates)

29.6.2.1 Kieserite MgSO4·(H2O) C 2/c 2/m

29.6.2.2 Szomolnokite FeSO4·(H2O) A2/a 2/m

29.6.2.3 Szmikite MnSO4·(H2O) A2/a 2/m

29.6.2.4 Poitevinite (Cu,Fe,Zn)SO4·(H2O) P1 1

29.6.2.5 Gunningite (Zn,Mn)SO4·(H2O) A2/a 2/m

29.6.2.6 Dwornikite (Ni,Fe)SO4·(H2O) C 2/c 2/m

29.6.2.7 Cobaltkieserite! CoSO4·H2O C 2/c 2/m

Strunz Class:

VI/C.01-60 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/C.01 - Kieserite group

VI/C.01-10 Kieserite MgSO4·(H2O) C 2/c 2/m

VI/C.01-20 Szomolnokite FeSO4·(H2O) A2/a 2/m

VI/C.01-30 Szmikite MnSO4·(H2O) A2/a 2/m

VI/C.01-35 Cobaltkieserite! CoSO4·H2O C 2/c 2/m

VI/C.01-40 Dwornikite (Ni,Fe)SO4·(H2O) C 2/c 2/m

VI/C.01-50 Poitevinite (Cu,Fe,Zn)SO4·(H2O) P1 1

VI/C.01-60 Gunningite (Zn,Mn)SO4·(H2O) A2/a 2/m

VI/C.01-70 Sanderite MgSO4·2(H2O) Mono ? Mono

Other Gunningite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Gunningite

(Zn,Mn)SO4·(H2O)
Dana No: 29.6.2.5 Strunz No: VI/C.01-60
Locality:

Notes: