Calcioburbankite Mineral Data

General Calcioburbankite Information

Chemical Formula:

Na3(Ca,REE,Sr)3(CO3)5

Composition:

Molecular Weight = 597.04 gm

Sodium 11.55 % Na 15.57 % Na₂O

Strontium 4.40 % Sr 5.21 % SrO

Calcium 12.08 % Ca 16.91 % CaO

La,Ce,Pr,Nd,Sm, 21.71 % RE 25.32 % REE₂O₃

Carbon 10.06 % C 36.86 % CO₂

Oxygen 40.20 % O

______ ______

100.00 % 99.87 % = TOTAL OXIDE

Empirical Formula:

Na₃Ca_1.8REE_0.9Sr_0.3(CO₃)₅

Environment:

In a vent associated with ancylite-Ce and a vug inside a marble zenolith associated the carbonatite assemblage at Mont Saint-Hilaire.

IMA Status:

Approved IMA 1995

Locality:

Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.

Name Origin:

For its relationship as the calcium-dominant analog of burbankite.

Name Pronunciation:

Calcioburbankite + Pronunciation

Synonym:

IMA1993-001

Calcioburbankite Image

Images:

Calcioburbankite Aegirine

Comments: Tan crystal spray of calcioburbankite on dark green aegirine.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calcioburbankite Crystallography

Axial Ratios:

a:c = 1:0.60476

Cell Dimensions:

a = 10.447, c = 6.318, Z = 2; V = 597.16 Den(Calc)= 3.32

Crystal System:

Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 6₃mc

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

By Intensity(I/I_o): 2.601(1), 2.13(0.6), 3.01(0.5),

Physical Properties of Calcioburbankite

Cleavage:

{100} Imperfect

Color:

Deep orange, Silky white, Pink. light.

Density:

3.45

Diaphaneity:

Translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Crystalline - Coarse - Occurs as well-formed coarse sized crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

3-4 - Calcite-Fluorite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Calcioburbankite

Gladstone-Dale:

CI meas= -0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1908,KPDmeas= 0.1836,KC= 0.1834
Ncalc = 1.61 - 1.63

Optical Data:

Uniaxial (-), e=1.631, w=1.636, bire=0.0050.

Calculated Properties of Calcioburbankite

Electron Density:

Bulk Density (Electron Density)=3.30 gm/cc
note: Specific Gravity of Calcioburbankite =3.45 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Calcioburbankite}= 135.40 barns/electron
U=PE_{Calcioburbankite} x r_electron= 446.43 barns/cc.

Radioactivity:

GRapi = 22,208.16 (Gamma Ray American Petroleum Institute Units)
Concentration of Calcioburbankite per GRapi unit = 45.03 (PPM)

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

**Estimated Radioactivity from Calcioburbankite** - 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 / 8.21 cm	487,983	1.32E-05	22,208.16	7.30
100 gm / 3.81 cm	48,798	1.32E-06	2,220.82	0.73
10 gm / 1.77 cm	4,880	1.32E-07	222.08	0.07
1 gm / 8.21 mm	488	1.32E-08	22.21	0.01
0.1 gm / 3.81 mm	49	1.32E-09	2.22	0.00
0.01 gm / 1.77 mm	5	1.32E-10	0.22	0.00
0.001 gm / 0.82 mm	0	1.32E-11	0.02	0.00

Weight of pure Calcioburbankite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.45 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 ( 1.09 % Th) From Sum REE Elements (21.71 % REE)

Calcioburbankite Classification

Dana Class:

14.04.04.03 (14)Anhydrous Carbonates

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

(14.04.04)Burbankite Group (Hexagonal)

14.04.04.01 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 6₃/mmc 6/m 2/m 2/m

14.04.04.02 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 6₃mc 6mm

14.04.04.03 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 6₃mc 6mm

14.04.04.04 Sanromanite! Na2CaPb3(CO3)5 P 6₃mc 6mm

Strunz Class:

05.AC.30 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

05.AC -Alkali and alkali-earth carbonates

05.AC.30 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 6₃/mmc 6/m 2/m 2/m

05.AC.30 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 6₃mc 6mm

05.AC.30 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 6₃mc 6mm

05.AC.30 Sanromanite! Na2CaPb3(CO3)5 P 6₃mc 6mm

Other Calcioburbankite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min v 81, p 1013, AmMin v 88, p 934) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Calcioburbankite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Calcioburbankite

Na3(Ca,REE,Sr)3(CO3)5
Dana No: 14.04.04.03 Strunz No: 05.AC.30
Locality:

Notes:

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