Nickel-boussingaultite Mineral Data

Nickel-boussingaultite Mineral Data +

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General Nickel-boussingaultite Information

Chemical Formula:

(NH4)2(Ni,Mg)(SO4)2·6(H2O)

Composition:

Molecular Weight = 386.39 gm

Magnesium 1.57 % Mg 2.61 % MgO

Nickel 11.39 % Ni 14.50 % NiO

Hydrogen 2.09 % H - % Calc as (NH₄)₂O

Hydrogen 3.13 % H 27.97 % H₂O

Sulfur 16.60 % S 41.44 % SO₃

Nitrogen 7.25 % N 13.48 % (NH₄)₂O

Oxygen 57.97 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

(NH₄)₂Ni_0.75Mg_0.25(SO₄)₂·6(H₂O)

IMA Status:

Approved IMA 1976

Locality:

Link to MinDat.org Location Data.

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Nickel-boussingaultite Crystallography

Axial Ratios:

a:b:c =0.7391:1:1.0032

Cell Dimensions:

a = 9.21, b = 12.46, c = 12.5, Z = 4; beta = 106.867° V = 1,372.75 Den(Calc)= 1.87

Crystal System:

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

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

By Intensity(I/I_o): 4.153(1), 3.759(0.8), 2.119(0.7),

Physical Properties of Nickel-boussingaultite

Color:

Blue.

Diaphaniety:

Transparent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Optical Properties of Nickel-boussingaultite

Gladstone-Dale:

CI calc= -0.329 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2647,KC= 0.1992

Optical Data:

Biaxial (+), a=1.49, b=1.494, g=1.501, bire=0.0110

Calculated Properties of Nickel-boussingaultite

Electron Density:

r_electron=1.96 gm/cc
note: r_{Nickel-boussingaultite}=1.87 gm/cc.

Fermion Index

Fermion Index = 0.07662
Boson Index = 0.92338

Photoelectric:

PE_{Nickel-boussingaultite}= 5.36 barns/electron
U=PE_{Nickel-boussingaultite} x r_electron= 10.49 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Nickel-boussingaultite is Not Radioactive

Nickel-boussingaultite Classification

Dana Class:

29.3.7.3 (29)Hydrated Acid and Sulfates

(29.3)where (A+)2 B (XO4)2 · x(H2O)

(29.3.7)Dana Group

29.3.7.1 Mohrite (NH4)2Fe(SO4)2·6(H2O) P 2₁/c 2/m

29.3.7.2 Boussingaultite (NH4)2Mg(SO4)2·6(H2O) P 2₁/a 2/m

29.3.7.3 Nickel-boussingaultite (NH4)2(Ni,Mg)(SO4)2·6(H2O) P 2₁/a 2/m

Strunz Class:

VI/C.19-40 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/C.19 - Picromerite group

VI/C.19-10 Picromerite K2Mg(SO4)2·6(H2O) P 2₁/a 2/m

VI/C.19-20 Cyanochroite K2Cu(SO4)2·6(H2O) P 2₁/a 2/m

VI/C.19-30 Boussingaultite (NH4)2Mg(SO4)2·6(H2O) P 2₁/a 2/m

VI/C.19-40 Nickel-boussingaultite (NH4)2(Ni,Mg)(SO4)2·6(H2O) P 2₁/a 2/m

VI/C.19-50 Mohrite (NH4)2Fe(SO4)2·6(H2O) P 2₁/c 2/m

Other Nickel-boussingaultite 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 Nickel-boussingaultite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Nickel-boussingaultite

(NH4)2(Ni,Mg)(SO4)2·6(H2O)
Dana No: 29.3.7.3 Strunz No: VI/C.19-40
Locality:

Notes: