Mineralogy Database

Radiobarite Mineral Data

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General Radiobarite Information

Help on Chemical  Formula: Chemical Formula: (Ba,Ra)SO4
Help on Composition: Composition: Molecular Weight = 233.40 gm
   Barium  58.83 %  Ba   65.69 % BaO
   Radium   0.01 %  Ra    0.01 % RaO
   Sulfur  13.74 %  S    34.30 % SO3
   Oxygen  27.42 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba0.99Ra0.0001(SO4)
Help on Environment: Environment: Highly radioactive secondary mineral formed in the oxidized zone of sediment-hosted uranium deposits.
Help on IMA Status: IMA Status: Not Submitted IMA
Help on Locality: Locality: Section 23 mine, Grants, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From radium replacing barium and from the Greek, baryos, "heavy."
 

Radiobarite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.6289:1:1.3122
Help on Cell Dimensions: Cell Dimensions: a = 8.878, b = 5.45, c = 7.152, Z = 4; V = 346.05 Den(Calc)= 4.48
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m)
 

Physical Properties of Radiobarite

Help on Cleavage: Cleavage: {010} Perfect, {210} Perfect, [010} Imperfect
Help on Color: Color: White, Yellowish white.
Help on Density: Density: 4.48
Help on Diaphaneity: Diaphaneity: Transparent to translucent to opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Radiobarite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1428,KPDmeas= 0.1428,KC= 0.1448
Ncalc = 1.65
Help on Optical Data: Optical Data: Biaxial (+), a=1.634-1.637, b=1.6355-1.638, g=1.646-1.648, bire=0.0110-0.0120, 2V(Calc)=36-42, 2V(Meas)=36-40. Dispersion weak, r < v.
 

Calculated Properties of Radiobarite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.99 gm/cc
note: Specific Gravity of Radiobarite =4.48 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PERadiobarite = 265.73 barns/electron
U=PERadiobarite x relectron=1,060.97 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 1352106239.53 (Gamma Ray American Petroleum Institute Units)
Concentration of Radiobarite per GRapi unit = 0.74 (PPB)

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

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 0.02 ± 0.01 grams of pure Radiobarite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 2.25 ± 0.56 grams of pure Radiobarite .

Estimated Radioactivity from Radiobarite - dangerous
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 / 7.53 cm 31,860,550,776 8.61E-01 1352106239.53 444,528.08
100 gm / 3.49 cm 3,186,055,078 8.61E-02 135,210,623.95 44,452.81
10 gm / 1.62 cm 318,605,508 8.61E-03 13,521,062.40 4,445.28
1 gm / 7.53 mm 31,860,551 8.61E-04 1,352,106.24 444.53
0.1 gm / 3.49 mm 3,186,055 8.61E-05 135,210.62 44.45
0.01 gm / 1.62 mm 318,606 8.61E-06 13,521.06 4.45
0.001 gm / 0.75 mm 31,861 8.61E-07 1,352.11 0.44

Weight of pure Radiobarite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.48 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
 

Radiobarite Classification

Help on  Dana Class: Dana Class: 28.00.00.00 (28)Sulfate Minerals
  (28.00)Without Dana Classification Numbers
  (28.00.00)Barite Group
 
28.00.00.00 Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm
 
28.00.00.00 Blakeite Fe2(TeO3)3 Cubic ? Cubic
 
28.00.00.00 IMA2008-029 (NH4)3Fe(SO4)3 R 3c 3m
 
28.00.00.00 IMA2008-040 BiMo2O7(OH)•2H2O P 21/m 2/m
 
28.00.00.00 Radiobarite* (Ba,Ra)SO4 2/m 2/m 2/m
 
28.00.00.00 Zincosite* ZnSO4 Unk Ortho
Help on  Strunz Class: Strunz Class: 07.AD.35 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AD -With only large cations
 
07.AD.35 Anglesite PbSO4 Pbnm 2/m 2/m 2/m
 
07.AD.35 Barite BaSO4 Pbnm 2/m 2/m 2/m
 
07.AD.35 Celestine SrSO4 Pbnm 2/m 2/m 2/m
 
07.AD.35 Olsacherite Pb2(SeO4)(SO4) P 2212 2 2 2
 
07.AD.35 Radiobarite* (Ba,Ra)SO4 2/m 2/m 2/m
 

Other Radiobarite Information

Help on See Also: See Also: Links to other databases for Radiobarite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Uranium Minerals

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

Radiobarite

(Ba,Ra)SO4
Dana No: 28.00.00.00 Strunz No: 07.AD.35
Locality:

 

Notes:

 

 
   
 


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