Kambaldaite Mineral Data

Kambaldaite Mineral Data +

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General Kambaldaite Information

Chemical Formula:

NaNi4(CO3)3(OH)3·3(H2O)

Composition:

Molecular Weight = 542.85 gm

Sodium 4.24 % Na 5.71 % Na₂O

Nickel 43.25 % Ni 55.04 % NiO

Hydrogen 1.67 % H 14.93 % H₂O

Carbon 6.64 % C 24.32 % CO₂

Oxygen 44.21 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaNi₄(CO₃)₃(OH)₃·3(H₂O)

Environment:

Secondary mineral in nickel-bearing rocks.

IMA Status:

Approved IMA 1985

Locality:

Otter shoot, Kambalda, WA, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Kambaldaite Image

Images:

Kambaldaite

Comments: Light green kambaldaite blebs and crusts.
Location: Kambalda Nickel deposit, Kambalda, WA, Australia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Kambaldaite Crystallography

Axial Ratios:

a:c = 1:0.58965

Cell Dimensions:

a = 10.34, c = 6.097, Z = 2; V = 564.53 Den(Calc)= 3.19

Crystal System:

Hexagonal - PyramidalH-M Symbol (6) Space Group: P 6₃

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

By Intensity(I/I_o): 9.03(1), 4.49(0.9), 3.613(0.4),

Crystal Structure:

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Engelhardt L M , Hall S R , White A H , American Mineralogist , 70 (1985) p.423-427, Crystal Structure of kambaldaite, Na2Ni8(CO3)6(OH)6(H2O)6, Note: U(1,2) for Na and for Ni2 has been altered to match symmetry constraints

Physical Properties of Kambaldaite

Cleavage:

None

Color:

Light green, Emerald green.

Density:

3.18

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

light green

Optical Properties of Kambaldaite

Dichroism (e):

light green.

Dichroism (w):

emerald green.

Gladstone-Dale:

CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.21,KPDmeas= 0.2107,KC= 0.2098

Optical Data:

Uniaxial (+), w=1.65, e=1.69, bire=0.0400.

Calculated Properties of Kambaldaite

Electron Density:

r_electron=3.17 gm/cc
note: r_Kambaldaite=3.19 gm/cc.

Fermion Index

Fermion Index = 0.00583
Boson Index = 0.99417

Photoelectric:

PE_Kambaldaite= 17.08 barns/electron
U=PE_Kambaldaite x r_electron= 54.19 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kambaldaite is Not Radioactive

Kambaldaite Classification

Dana Class:

16b.7.12.1 (16b)Carbonates - Hydroxyl or Halogen

(16b.7)Dana Type

(16b.7.12)Dana Group

16b.7.12.1 Kambaldaite NaNi4(CO3)3(OH)3·3(H2O) P 6₃ 6

Strunz Class:

V/E.05-30 V - Nitrates, Carbonates and Borates

V/E - Water-bearing carbonates with unfamiliar anions

V/E.05 - Otwayite - Szymanskite series

V/E.05-10 Otwayite Ni2(CO3)(OH)2·(H2O) Unk Ortho

V/E.05-20 Zaratite Ni3(CO3)(OH)4·4(H2O) Unk (in part amorphous) Cubic

V/E.05-30 Kambaldaite NaNi4(CO3)3(OH)3·3(H2O) P 6₃ 6

V/E.05-40 Szymanskiite Hg16(Ni,Mg)6(H3O)8(CO3)12·3(H2O) P 6₃ 6

Other Kambaldaite Information

References:

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

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Kambaldaite

NaNi4(CO3)3(OH)3·3(H2O)
Dana No: 16b.7.12.1 Strunz No: V/E.05-30
Locality:

Notes: