Carbocernaite Mineral Data

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General Carbocernaite Information

Chemical Formula:

(Ca,Na)(Sr,Ce,Ba)(CO3)2

Composition:

Molecular Weight = 264.16 gm

Barium 5.20 % Ba 5.80 % BaO

Sodium 2.18 % Na 2.93 % Na₂O

Strontium 19.90 % Sr 23.54 % SrO

Calcium 11.38 % Ca 15.92 % CaO

Cerium 15.91 % Ce 18.64 % Ce₂O₃

Carbon 9.09 % C 33.32 % CO₂

Oxygen 36.34 % O

______ ______

100.00 % 100.15 % = TOTAL OXIDE

Empirical Formula:

Ca_0.75Na_0.25Sr_0.6Ce_0.3Ba_0.1(CO₃)₂

Environment:

Accessory mineral in dolomite–calcite carbonatite associated with an alkaline ultramafic massif.

IMA Status:

Approved IMA 1961

Locality:

Vuoriyarvi carbonatite complex, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the essential chemical components, CARBOnate, CERium, and sodium, Natrium.

Synonym:

ICSD 201461

PDF 25-175

Carbocernaite Image

Images:

Carbocernaite

Comments: Light brownish massive carbocernaite.
Location: Olenii (Oleny) Ruchei Stream apatite deposit, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Carbocernaite Crystallography

Axial Ratios:

a:b:c =0.8806:1:0.7141

Cell Dimensions:

a = 6.41, b = 7.279, c = 5.198, Z = 2; V = 242.53 Den(Calc)= 3.62

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P mc2₁

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

By Intensity(I/I_o): 2.989(1), 4.05(0.5), 4.81(0.5),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Nicheng S , Zhesheng M , Zhizhong P , Kexue Tongbao , 27 (1982) p.76-80, The crystal structure of carbocernaite, Locality: deposits of the Bayan Obo, Baotou, China

Physical Properties of Carbocernaite

Cleavage:

{100} Indistinct, {021} Indistinct, {010} Indistinct

Color:

Brown, Colorless, Yellow, Yellow brown, White.

Density:

3.53

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

3 - Calcite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Carbocernaite

Gladstone-Dale:

CI meas= -0.039 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1801,KPDmeas= 0.1847,KC= 0.1777
Ncalc = 1.63 - 1.64

Optical Data:

Biaxial (-), a=1.569, b=1.679, g=1.708, bire=0.1390, 2V(Calc)=50, 2V(Meas)=52.

Calculated Properties of Carbocernaite

Electron Density:

Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Carbocernaite =3.62 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Carbocernaite}= 124.93 barns/electron
U=PE_{Carbocernaite} x r_electron= 423.03 barns/cc.

Radioactivity:

GRapi = 15,876.77 (Gamma Ray American Petroleum Institute Units)
Concentration of Carbocernaite per GRapi unit = 62.99 (PPM)

Carbocernaite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Carbocernaite** - weak
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 8.08 cm	356,436	9.63E-06	15,876.77	5.22
100 gm / 3.75 cm	35,644	9.63E-07	1,587.68	0.52
10 gm / 1.74 cm	3,564	9.63E-08	158.77	0.05
1 gm / 8.08 mm	356	9.63E-09	15.88	0.01
0.1 gm / 3.75 mm	36	9.63E-10	1.59	0.00
0.01 gm / 1.74 mm	4	9.63E-11	0.16	0.00
0.001 gm / 0.81 mm	0	9.63E-12	0.02	0.00

Weight of pure Carbocernaite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.62 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.80 % Th) From Sum REE Elements (15.91 % REE)

Carbocernaite Classification

Dana Class:

14.04.06.01 (14)Anhydrous Carbonates

(14.04)with Compound Formula A+2 B++2 (CO3)4

(14.04.06)Dana Group

14.04.06.01 Carbocernaite (Ca,Na)(Sr,Ce,Ba)(CO3)2 P mc2₁ mm2

Strunz Class:

05.AB.50 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

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

05.AB.50 Carbocernaite (Ca,Na)(Sr,Ce,Ba)(CO3)2 P mc2₁ mm2

Other Carbocernaite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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

Carbocernaite

(Ca,Na)(Sr,Ce,Ba)(CO3)2
Dana No: 14.04.06.01 Strunz No: 05.AB.50
Locality:

Notes: