Vaterite Mineral Data

Vaterite Mineral Data +

General Vaterite Information

Chemical Formula:

CaCO3

Composition:

Molecular Weight = 100.09 gm

Calcium 40.04 % Ca 56.03 % CaO

Carbon 12.00 % C 43.97 % CO₂

Oxygen 47.96 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca(CO₃)

IMA Status:

Valid Species (Pre-IMA) 1911

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 18127

PDF 33-268

Vaterite Image

Images:

Vaterite Defernite Manganite

Comments: Opaque white fibrous vaterite with red defernite and black manganite.
Location: Kombat Mine, Otavi, Otjozondjupa, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vaterite Crystallography

Axial Ratios:

a:c = 1:2.37981

Cell Dimensions:

a = 7.135, c = 16.98, Z = 12; V = 748.61 Den(Calc)= 2.66

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mmc

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

By Intensity(I/I_o): 2.73(1), 3.3(1), 3.58(1),

Crystal Structure:

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Kamhi S R , Acta Crystallographica , 16 (1963) p.770-772, On the structure of vaterite, CaCO3, Locality: Synthetic

Physical Properties of Vaterite

Cleavage:

[???] Good

Color:

Colorless.

Density:

2.54

Diaphaniety:

Transparent

Hardness:

3 - Calcite

Streak:

white

Optical Properties of Vaterite

Gladstone-Dale:

CI meas= -0.123 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.072 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2256,KPDmeas= 0.2362,KC= 0.2104

Optical Data:

Uniaxial (+), w=1.55, e=1.65, bire=0.1000.

Calculated Properties of Vaterite

Electron Density:

r_electron=2.66 gm/cc
note: r_Vaterite=2.66 gm/cc.

Fermion Index

Fermion Index = 0.00209
Boson Index = 0.99791

Photoelectric:

PE_Vaterite= 5.06 barns/electron
U=PE_Vaterite x r_electron= 13.45 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Vaterite is Not Radioactive

Vaterite Classification

Dana Class:

14.1.2.1 (14)Anhydrous Carbonates

(14.1)with Simple Formula A+ CO3

(14.1.2)Dana Group

14.1.2.1 Vaterite CaCO3 P 6₃/mmc 6/m 2/m 2/m

14.1.2.2 Gregoryite (Na2,K2,Ca)CO3 P 6₃mc 6mm

Strunz Class:

V/B.02-10 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 Vaterite Information

References:

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

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Vaterite

CaCO3
Dana No: 14.1.2.1 Strunz No: V/B.02-10
Locality:

Notes: