Burbankite Mineral Data + Say BURBANKITE

General Burbankite Information
Help on Chemical Formula: Chemical Formula: (Na,Ca)3(Sr,Ba,Ce)3(CO3)5
Help on Composition: Composition: Molecular Weight = 706.03 gm
   Barium     17.51 %  Ba   19.55 % BaO
   Sodium      7.16 %  Na    9.66 % Na2O
   Strontium  22.34 %  Sr   26.42 % SrO
   Calcium     4.54 %  Ca    6.35 % CaO
   Cerium      5.95 %  Ce    6.97 % Ce2O3
   Carbon      8.51 %  C    31.17 % CO2
   Oxygen     33.99 %  O
             ______        ______ 
             100.00 %      100.11 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.2Ca0.8Sr1.8Ba0.9Ce0.3(CO3)5
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 30949
  PDF 26-1374
 

Burbankite Image

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Burbankite

Comments: White crystal of burbankite (see arrow) and bluish green fluorite on matrix.
Location: Pocos de Caldes, Minas Gerais, Brazil. Scale: Crystal size 2 mm.
© John Veevaert
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Burbankite

Comments: Yellow massive burbankite.
Location: Big Sandy Creek, near Rocky Boy, Big Bear Paw Mountains, Hill County, Montana, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Burbankite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.61443
Help on Cell Dimensions: Cell Dimensions: a = 10.53, c = 6.47, Z = 2; V = 621.29 Den(Calc)= 3.77
Help on Crystal System: 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/Io): 2.639(1), 3.041(0.8), 5.28(0.7),
Click Here for Large Burbankite Structure Window Crystal Structure:

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Belovitskaya Yu V , Pekov I V , Kabalov Yu K , Crystallography Reports , 45 (2000) p.26-29, Refinement of the crystal structures of low-rare-earth, and typical burbankites by the Rietveld method, Locality: Khibiny Massif, Kola Peninsula, Russia, Sample: B-108, Note: x02 adjusted to satisfy symmetry constraints

View Additional jPOWD Structure files for Burbankite
[1]
 

Physical Properties of Burbankite

Help on Cleavage: Cleavage: [100] Distinct
Help on Color: Color: Colorless, Grayish yellow, Orange, Pink.
Help on Density: Density: 3.5
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Burbankite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.039 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1647,KPDmeas= 0.1774,KC= 0.1708
Help on Optical Data: Optical Data: Uniaxial (?), a=1.615, b=1.627, bire=0.0120.
 

Calculated Properties of Burbankite

Help on Electron Density: Electron Density:

relectron=3.49 gm/cc
note: rBurbankite =3.77 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.04799
Boson Index = 0.95201
Help on Photoelectric: Photoelectric:

PEBurbankite = 131.97 barns/electron
U=PEBurbankite x relectron= 460.00 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5,871.73 (Gamma Ray American Petroleum Institute Units)

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

Estimated Radioactivity from Burbankite - mild
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 / 7.97 cm 133,361 3.60E-06 5,871.73 1.93
100 gm / 3.70 cm 13,336 3.60E-07 587.17 0.19
10 gm / 1.72 cm 1,334 3.60E-08 58.72 0.02
1 gm / 7.97 mm 133 3.60E-09 5.87 0.00
0.1 gm / 3.70 mm 13 3.60E-10 0.59 0.00
0.01 gm / 1.72 mm 1 3.60E-11 0.06 0.00
0.001 gm / 0.80 mm 0 3.60E-12 0.01 0.00

Weight of pure Burbankite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.77 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 ( 0.30 % Th) From Sum REE Elements ( 5.95 % REE)
 

Burbankite Classification
Help on Dana Class: Dana Class: 14.4.4.1 (14)Anhydrous Carbonates
  (14.4)with Compound Formula A+2 B++2 (CO3)4
  (14.4.4)Burbankite Group (Hexagonal)
 
14.4.4.1 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 63/mmc 6/m 2/m 2/m
 
14.4.4.2 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 63mc 6mm
 
14.4.4.3 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 63mc 6mm
Help on Strunz Class: Strunz Class: V/B.05-100 V - Nitrates, Carbonates and Borates
  V/B - Waterfree carbonates [CO3]2- without unfamiliar anions
  V/B.05 - Eitelie - Shortite - Carbocernaite series
 
V/B.05-10 Eitelite Na2Mg(CO3)2 R 3 3
 
V/B.05-20 Nyerereite Na2Ca(CO3)2 C mc21 mm2
 
V/B.05-30 Natrofairchildite Na2Ca(CO3)2 P 63/mmc 6/m 2/m 2/m
 
V/B.05-40 Gregoryite (Na2,K2,Ca)CO3 P 63mc 6mm
 
V/B.05-50 Fairchildite K2Ca(CO3)2 P 63/mmc 6/m 2/m 2/m
 
V/B.05-55 Zemkorite (Na,K)2Ca(CO3)2 P 63/mmc, P 63mc, P 62c- Hex
 
V/B.05-60 Butschliite K2Ca(CO3)2 R 3m 3 2/m
 
V/B.05-70 Shortite Na2Ca2(CO3)3 Amm2 mm2
 
V/B.05-80 Sahamalite-(Ce) (Mg,Fe)Ce2(CO3)4 P 21/a 2/m
 
V/B.05-90 Remondite-(Ce) Na3(Ce,La,Ca,Na,Sr)3(CO3)5 P 21 2
 
V/B.05-92 Remondite-(La)! Na3(La,Ce,Ca)3(CO3)5 P 21 2
 
V/B.05-95 Petersenite-(Ce) (Na,Ca)4(Ce,La,Nd)2(CO3)5 P 21 2
 
V/B.05-98 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 63mc 6mm
 
V/B.05-100 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 63/mmc 6/m 2/m 2/m
 
V/B.05-110 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 63mc 6mm
 
V/B.05-120 Carbocernaite (Ca,Na)(Sr,Ce,Ba)(CO3)2 P mc21 mm2
 

Other Burbankite Information
Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Burbankite :
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 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris

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Burbankite

(Na,Ca)3(Sr,Ba,Ce)3(CO3)5
Dana No: 14.4.4.1 Strunz No: V/B.05-100
Locality:

 

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