Rouvilleite Mineral Data

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General Rouvilleite Information

Chemical Formula:

Na3Ca2(CO3)3F

Composition:

Molecular Weight = 348.15 gm

Sodium 19.81 % Na 26.70 % Na₂O

Calcium 23.02 % Ca 32.21 % CaO

Carbon 10.35 % C 37.92 % CO₂

Oxygen 41.36 % O

Fluorine 5.46 % F 5.46 % F

- % F -2.30 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₃Ca₂(CO₃)₃F

Environment:

Cavities in sodalite syenite inclusions in nepheline syenite.

IMA Status:

Approved IMA 1991

Locality:

Poudrette quarry, Rouville County, Mt. St-Hilaire, Quebec, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Rouvilleite + Pronunciation

Synonym:

ICSD 39352

IMA1989-050

PDF 44-1471

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Rouvilleite Crystallography

Axial Ratios:

a:b:c =0.5086:1:0.4445

Cell Dimensions:

a = 8.043, b = 15.812, c = 7.03, Z = 4; beta = 101.16° V = 877.14 Den(Calc)= 2.64

Crystal System:

MonoclinicSpace Group: Cc,C 2/c

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

By Intensity(I/I_o): 2.895(1), 2.711(0.9), 7.081(0.8),

Crystal Structure:

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Yamnova N A , Pushcharovskii D Yu , Khomyakov A P , Vyatkin S V , Soviet Physics - Crystallography , 36 (1991) p.14-16, Crystal structure of the new natural fluorocarbonate Na3Ca(Mn,Ca)(CO3)3F, Locality: hydrothermalites, Lovozero alkaline massif, Kola Peninsula, Russia

Physical Properties of Rouvilleite

Cleavage:

{001} Good, {010} Good

Color:

Colorless, Reddish brown, Tan.

Density:

2.67

Diaphaneity:

Transparent

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Hardness:

3 - Calcite

Luster:

Vitreous - Waxy

Streak:

white

Optical Properties of Rouvilleite

Gladstone-Dale:

CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2024,KPDmeas= 0.2001,KC= 0.201
Ncalc = 1.53 - 1.54

Optical Data:

Biaxial (-), a=1.472, b=1.562, g=1.569, bire=0.0970, 2V(Calc)=28, 2V(Meas)=25-30.

Pleochroism (x):

none.

Pleochroism (y):

none.

Pleochroism (z):

none.

Calculated Properties of Rouvilleite

Electron Density:

Bulk Density (Electron Density)=2.64 gm/cc
note: Specific Gravity of Rouvilleite =2.67 gm/cc.

Fermion Index:

Fermion Index = 0.0016478209
Boson Index = 0.9983521791

Photoelectric:

PE_Rouvilleite= 3.31 barns/electron
U=PE_Rouvilleite x rElectron Density= 8.74 barns/cc.

Radioactivity:

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

Rouvilleite Classification

Dana Class:

16a.05.05.01 (16a)Carbonates - Hydroxyl or Halogen

(16a.05)with miscellaneous formulae

(16a.05.05)Dana Group

16a.05.05.01 Rouvilleite Na3Ca2(CO3)3F Cc,C 2/c Mono

16a.05.05.02 Podlesnoite! BaCa2(CO3)2F2 C mcm 2/m 2/m 2/m

Strunz Class:

05.BC.10 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BC -With alkali-earth cations

05.BC.10 Rouvilleite Na3Ca2(CO3)3F Cc,C 2/c Mono

Other Rouvilleite Information

References:

PHYS. PROP.(Am.Min.,Vol.76,p2023,1991) OPTIC PROP.(Am.Min.,Vol.76,p2023,1991)

See Also:

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

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

Rouvilleite

Na3Ca2(CO3)3F
Dana No: 16a.05.05.01 Strunz No: 05.BC.10
Locality:

Notes: