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Braitschite-(Ce) Mineral Data

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General Braitschite-(Ce) Information

Help on Chemical Formula: Chemical Formula: (Ca,Na2)7(Ce,La)2B22O43•7(H2O)
Help on Composition: Composition: Molecular Weight = 1,623.88 gm
   Sodium      5.66 %  Na    7.63 % Na2O
   Calcium    12.34 %  Ca   17.27 % CaO
   Lanthanum   4.28 %  La    5.02 % La2O3
   Cerium     12.94 %  Ce   15.16 % Ce2O3
   Boron      14.65 %  B    47.16 % B2O3
   Hydrogen    0.87 %  H     7.77 % H2O
   Oxygen     49.26 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5Na4Ce1.5La0.5B22O43•7(H2O)
Help on Environment: Environment: Marine evaporite deposits.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Cane Creek potash mine, near Moab, Grand County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Otto Braitsch (1921-1966), German mineralogist.
Help on Name Pronunciation: Name Pronunciation: Braitschite-(Ce) + Pronunciation Say BRAITSCHITE-(CE)
 

Braitschite-(Ce) Image

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  Braitschite-(Ce)

Comments: Aggregates of white to red-brown platy Braitschite-(Ce) in halite matrix.
Location: Cane Creek near Moab, Grand Co., Utah, USA. Scale: Specimen Size 2x2.5 cm.
© Diederik Visser

Braitschite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.60686
Help on Cell Dimensions: Cell Dimensions: a = 12.156, c = 7.377, Z = 1; V = 944.04 Den(Calc)= 2.86
Help on Crystal System: Crystal System: Hexagonal Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.283(1), 3.021(0.92), 10.52(0.54),
 

Physical Properties of Braitschite-(Ce)

Help on Color: Color: Colorless, White, Pink.
Help on Density: Density: 2.903
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Hexagonal - Six-sided crystal shape in cross-section or habit.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Braitschite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.088 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.226,KPDmeas= 0.2227,KC= 0.2078
Ncalc = 1.59 - 1.6
Help on Optical Data: Optical Data: Uniaxial (+), w=1.646, e=1.647, bire=0.0010.
 

Calculated Properties of Braitschite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Braitschite-(Ce) =2.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBraitschite-(Ce) = 82.82 barns/electron
U=PEBraitschite-(Ce) x relectron= 232.00 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 17,724.30 (Gamma Ray American Petroleum Institute Units)
Concentration of Braitschite-(Ce) per GRapi unit = 56.42 (PPM)

Braitschite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Braitschite-(Ce) - 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 / 8.70 cm 385,720 1.04E-05 17,724.30 5.83
100 gm / 4.04 cm 38,572 1.04E-06 1,772.43 0.58
10 gm / 1.87 cm 3,857 1.04E-07 177.24 0.06
1 gm / 8.70 mm 386 1.04E-08 17.72 0.01
0.1 gm / 4.04 mm 39 1.04E-09 1.77 0.00
0.01 gm / 1.87 mm 4 1.04E-10 0.18 0.00
0.001 gm / 0.87 mm 0 1.04E-11 0.02 0.00

Weight of pure Braitschite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.90 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 ( 0.86 % Th) From Sum REE Elements (17.22 % REE)
 

Braitschite-(Ce) Classification
Help on Dana Class: Dana Class: 26.07.06.01 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.07)Dana Type
  (26.07.06)Dana Group
 
26.07.06.01 Braitschite-(Ce) (Ca,Na2)7(Ce,La)2B22O43•7(H2O) Unk Hex
Help on Strunz Class: Strunz Class: 06.HA.10 06 - BORATES
  06.H - Unclassified Borates
  06.HA -Unclassified borates
 
06.HA.10 Braitschite-(Ce) (Ca,Na2)7(Ce,La)2B22O43•7(H2O) Unk Hex
 

Other Braitschite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Braitschite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Braitschite-(Ce)

(Ca,Na2)7(Ce,La)2B22O43•7(H2O)
Dana No: 26.07.06.01 Strunz No: 06.HA.10
Locality:

 

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