Nullaginite Mineral Data

Nullaginite Mineral Data +

General Nullaginite Information

Chemical Formula:

Ni2(CO3)(OH)2

Composition:

Molecular Weight = 211.40 gm

Nickel 55.52 % Ni 70.66 % NiO

Hydrogen 0.95 % H 8.52 % H₂O

Carbon 5.68 % C 20.82 % CO₂

Oxygen 37.84 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ni₂(CO₃)(OH)₂

Environment:

Secondary mineral in serpentinized peridotites.

IMA Status:

Approved IMA 1981

Locality:

Otway Belt, Nullagine district, WA, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

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Nullaginite Crystallography

Axial Ratios:

a:b:c =0.7696:1:0.2575

Cell Dimensions:

a = 9.236, b = 12.001, c = 3.091, Z = 4; beta = 90.48° V = 342.60 Den(Calc)= 4.10

Crystal System:

MonoclinicSpace Group: P 2₁/m,P 2₁

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

By Intensity(I/I_o): 2.579(1), 2.557(0.9), 4.619(0.4),

Physical Properties of Nullaginite

Color:

Bright green, Dark green.

Density:

3.56

Diaphaniety:

Transparent to Translucent

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Silky

Optical Properties of Nullaginite

Gladstone-Dale:

CI meas= -0.059 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1813,KPDmeas= 0.2088,KC= 0.1973

Optical Data:

Biaxial (?), a=1.67, b=1.78, g=1.78, bire=0.1100

Calculated Properties of Nullaginite

Electron Density:

r_electron=3.50 gm/cc
note: r_Nullaginite=3.56 gm/cc.

Fermion Index

Fermion Index = 0.00708
Boson Index = 0.99292

Photoelectric:

PE_Nullaginite= 22.00 barns/electron
U=PE_Nullaginite x r_electron= 77.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Nullaginite is Not Radioactive

Nullaginite Classification

Dana Class:

16a.3.2.2 (16a)Carbonates - Hydroxyl or Halogen

(16a.3)where (A B)2 (XO3) Zq

(16a.3.2)Malachite Group

16a.3.2.1 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

16a.3.2.2 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

16a.3.2.3 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 2₁/a 2/m

Strunz Class:

V/C.01-70 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.01 - Azurite - Rosasite group and related compounds

V/C.01-10 Azurite Cu3(CO3)2(OH)2 P 2₁/a 2/m

V/C.01-20 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-25 Georgeite Cu5(CO3)3(OH)4·6(H2O) None

V/C.01-30 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 2₁/a 2/m

V/C.01-40 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

V/C.01-50 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

V/C.01-60 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-70 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

V/C.01-80 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-90 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-100 Hydrozincite Zn5(CO3)2(OH)6 C 2/m 2/m

V/C.01-105 Brianyoungite Zn3(CO3,SO4)(OH)4 C 2/m 2/m

V/C.01-110 Aurichalcite (Zn,Cu)5(CO3)2(OH)6 P 2₁/m 2/m

V/C.01-120 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

V/C.01-130 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Other Nullaginite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Print or Cut-and-Paste your Nullaginite Specimen Label here :

Nullaginite

Ni2(CO3)(OH)2
Dana No: 16a.3.2.2 Strunz No: V/C.01-70
Locality:

Notes: