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.

Name Pronunciation:

Nullaginite + Pronunciation

Nullaginite Image

Images:

Nullaginite

Comments: BSE image of a nullaginite nodule in a polished section. (CanMin, v19:315).
Location: Otwav deposit, Nullagine district, Western Australia.. Scale: See Image.
© Canadian Mineralogist

Images:

Nullaginite

Comments: Green encrustations of nullaginite on matrix.
Location: Widgiemooltha, Western Australia, Australia. Scale: Sample size: 2 x 2 x 1 cm.
© Tom Loomis / Dakota Matrix

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:

Monoclinic Space 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

Diaphaneity:

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= -0.058 (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
Ncalc = 1.7 - 1.81

Optical Data:

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

Calculated Properties of Nullaginite

Electron Density:

Bulk Density (Electron Density)=3.50 gm/cc
note: Specific Gravity of Nullaginite =3.56 gm/cc.

Fermion Index:

Fermion Index = 0.0070822538
Boson Index = 0.9929177462

Photoelectric:

PE_Nullaginite= 22.00 barns/electron
U=PE_Nullaginite x rElectron Density= 77.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nullaginite is Not Radioactive

Nullaginite Classification

Dana Class:

16a.03.02.02 (16a)Carbonates - Hydroxyl or Halogen

(16a.03)where (A B)2 (XO3) Zq

(16a.03.02)Malachite Group

16a.03.02.01 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

16a.03.02.02 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

16a.03.02.03 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

16a.03.02.04 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Strunz Class:

05.BA.10 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BA -With Cu, Co, Ni, Zn, Mg, Mn

05.BA.10 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

05.BA.10 Georgeite Cu5(CO3)3(OH)4•6(H2O) None

05.BA.10 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

05.BA.10 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

05.BA.10 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

05.BA.10 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Other Nullaginite Information

References:

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

See Also:

Links to other databases for Nullaginite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Nullaginite

Ni2(CO3)(OH)2
Dana No: 16a.03.02.02 Strunz No: 05.BA.10
Locality:

Notes:

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