Gaspeite Mineral Data

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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.

Name Pronunciation:

Gaspeite

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

Diaphaneity:

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
Ncalc = 1.72 - 1.76

Optical Data:

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

Calculated Properties of Gaspeite

Electron Density:

Bulk Density (Electron Density)=3.64 gm/cc
note: Specific Gravity of Gaspeite =3.71 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Gaspeite= 14.72 barns/electron
U=PE_Gaspeite x rElectron Density= 53.54 barns/cc.

Radioactivity:

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

Gaspeite Classification

Dana Class:

14.01.01.08 (14)Anhydrous Carbonates

(14.01)with Simple Formula A+ CO3

(14.01.01)Calcite Group (Trigonal: R-3c)

14.01.01.01 Calcite CaCO3 R 3c 3 2/m

14.01.01.02 Magnesite MgCO3 R 3c 3 2/m

14.01.01.03 Siderite FeCO3 R 3c 3 2/m

14.01.01.04 Rhodochrosite MnCO3 R 3c 3 2/m

14.01.01.05 Sphaerocobaltite CoCO3 R 3c 3 2/m

14.01.01.06 Smithsonite ZnCO3 R 3c 3 2/m

14.01.01.07 Otavite CdCO3 R 3c 3 2/m

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

Strunz Class:

05.AB.05 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

05.AB -Alkali-earth (and other M2+) carbonates

05.AB.05 Calcite CaCO3 R 3c 3 2/m

05.AB.05 Gaspeite (Ni,Mg,Fe)CO3 R 3c 3 2/m

05.AB.05 Magnesite MgCO3 R 3c 3 2/m

05.AB.05 Rhodochrosite MnCO3 R 3c 3 2/m

05.AB.05 Otavite CdCO3 R 3c 3 2/m

05.AB.05 Sphaerocobaltite CoCO3 R 3c 3 2/m

05.AB.05 Siderite FeCO3 R 3c 3 2/m

05.AB.05 Smithsonite ZnCO3 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)

See Also:

Links to other databases for Gaspeite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - MinDAT
11 - Mineral and Gemstone Kingdom
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Gaspeite

(Ni,Mg,Fe++)CO3
Dana No: 14.01.01.08 Strunz No: 05.AB.05
Locality:

Notes: