Gaspeite Mineral Data

Gaspeite Mineral Data +

General Gaspeite Information

Chemical Formula:

(Ni,Mg,Fe++)CO3

Composition:

Molecular Weight = 108.10 gm

Magnesium 6.75 % Mg 11.19 % MgO

Iron 5.17 % Fe 6.65 % FeO

Nickel 32.58 % Ni 41.46 % NiO

Carbon 11.11 % C 40.71 % CO₂

Oxygen 44.40 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ni_0.6Mg_0.3Fe²⁺_0.1(CO₃)

Environment:

Green mineral formed from the oxidation of nickel-rich rock.

IMA Status:

Approved IMA 1966

Locality:

It was first described from the Gaspe Peninsula in Quebec, but has been reported from elsewhere, including western Australia. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Synonym:

ICSD 61067

IMA1965-029

PDF 12-771

Gaspeite Image

Images:

Gaspeite

Comments: Green, crystalline massive gaspeite in matrix.
Location: Lemieux Township, Gaspe Peninsula, Gaspe Nord County, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gaspeite Crystallography

Axial Ratios:

a:c = 1:3.2309

Cell Dimensions:

a = 4.621, c = 14.93, Z = 6; V = 276.10 Den(Calc)= 3.90

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3c

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

By Intensity(I/I_o): 2.741(1), 1.692(0.45), 3.543(0.36),

Crystal Structure:

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Graf D L , American Mineralogist , 46 (1961) p.1283-1316, Crystallographic tables for the rhombohedral carbonates

View Additional jPOWD Structure files for Gaspeite
[1]

Physical Properties of Gaspeite

Cleavage:

[1011] Good

Color:

Light green.

Density:

3.71

Diaphaniety:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous - Dull

Streak:

yellow green

Optical Properties of Gaspeite

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1846,KPDmeas= 0.1941,KC= 0.1937

Optical Data:

Uniaxial (-), e=1.61, w=1.83, bire=0.2200.

Calculated Properties of Gaspeite

Electron Density:

r_electron=3.64 gm/cc
note: r_Gaspeite=3.71 gm/cc.

Fermion Index

Fermion Index = 0.01295
Boson Index = 0.98705

Photoelectric:

PE_Gaspeite= 14.72 barns/electron
U=PE_Gaspeite x r_electron= 53.54 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Gaspeite is Not Radioactive

Gaspeite Classification

Dana Class:

14.1.1.8 (14)Anhydrous Carbonates

(14.1)with Simple Formula A+ CO3

(14.1.1)Calcite Group (Trigonal: R3¯c)

14.1.1.1 Calcite CaCO3 R 3c 3 2/m

14.1.1.2 Magnesite MgCO3 R 3c 3 2/m

14.1.1.3 Siderite FeCO3 R 3c 3 2/m

14.1.1.4 Rhodochrosite MnCO3 R 3c 3 2/m

14.1.1.5 Sphaerocobaltite CoCO3 R 3c 3 2/m

14.1.1.6 Smithsonite ZnCO3 R 3c 3 2/m

14.1.1.7 Otavite CdCO3 R 3c 3 2/m

14.1.1.8 Gaspeite (Ni,Mg,Fe)CO3 R 3c 3 2/m

Strunz Class:

V/B.02-80 V - Nitrates, Carbonates and Borates

V/B - Waterfree carbonates [CO3]2- without unfamiliar anions

V/B.02 - Calcite group

V/B.02-10 Vaterite CaCO3 P 6₃/mmc 6/m 2/m 2/m

V/B.02-20 Calcite CaCO3 R 3c 3 2/m

V/B.02-30 Magnesite MgCO3 R 3c 3 2/m

V/B.02-40 Siderite FeCO3 R 3c 3 2/m

V/B.02-50 Rhodochrosite MnCO3 R 3c 3 2/m

V/B.02-60 Smithsonite ZnCO3 R 3c 3 2/m

V/B.02-70 Sphaerocobaltite CoCO3 R 3c 3 2/m

V/B.02-80 Gaspeite (Ni,Mg,Fe)CO3 R 3c 3 2/m

V/B.02-90 Otavite CdCO3 R 3c 3 2/m

Other Gaspeite Information

References:

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

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Gaspeite

(Ni,Mg,Fe++)CO3
Dana No: 14.1.1.8 Strunz No: V/B.02-80
Locality:

Notes: