Radiobarite Mineral Data

Radiobarite Mineral Data

General Radiobarite Information

Chemical Formula:

(Ba,Ra)SO4

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

Empirical Formula:

Ba_0.9999Ra_0.0001(SO₄)

Environment:

Highly radioactive secondary mineral formed in the oxidized zone of sediment-hosted uranium deposits.

IMA Status:

Not Submitted IMA

Locality:

Section 23 mine, Grants, New Mexico. Link to MinDat.org Location Data.

Name Origin:

From radium replacing barium and from the Greek, baryos, "heavy."

Search for Radiobarite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Radiobarite Crystallography

Axial Ratios:

a:b:c =1.6289:1:1.3122

Cell Dimensions:

a = 8.878, b = 5.45, c = 7.152, Z = 4; V = 346.05 Den(Calc)= 4.48

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m)

Physical Properties of Radiobarite

Cleavage:

[010] Perfect, [210] Perfect, [010] Imperfect

Color:

White, Yellowish white.

Density:

4.48

Diaphaniety:

Transparent to translucent to opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

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

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Radiobarite

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

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

Electron Density:

r_electron=3.99 gm/cc
note: r_Radiobarite=4.48 gm/cc.

Fermion Index

Fermion Index = 0.10601
Boson Index = 0.89399

Photoelectric:

PE_Radiobarite= 265.73 barns/electron
U=PE_Radiobarite x r_electron=1,060.97 barns/cc.

Radioactivity:

GRapi = 1351539387.93 (Gamma Ray American Petroleum Institute Units)

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	31,847,200,000	8.61E-01	1351539387.93	444,341.72
100 gm / 3.49 cm	3,184,720,000	8.61E-02	135,153,938.79	44,434.17
10 gm / 1.62 cm	318,472,000	8.61E-03	13,515,393.88	4,443.42
1 gm / 7.53 mm	31,847,200	8.61E-04	1,351,539.39	444.34
0.1 gm / 3.49 mm	3,184,720	8.61E-05	135,153.94	44.43
0.01 gm / 1.62 mm	318,472	8.61E-06	13,515.39	4.44
0.001 gm / 0.75 mm	31,847	8.61E-07	1,351.54	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

Dana Class:

28.0.0.0 (28)Sulfate Minerals

(28.0)Without Dana Classification Numbers

(Barite Group)

Strunz Class:

VI/X.00-00 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/X - Unclassified Strunz Sulfates,Chromates,Molybdates and Tungstates

VI/X.00 - Barite Group

Other Radiobarite Information

See Also:

Links to other databases for Radiobarite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas 10 - Uranium Minerals

Search for Radiobarite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Radiobarite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Radiobarite Mineral Data :

Ask about Radiobarite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Radiobarite

(Ba,Ra)SO4
Dana No: Unknown Strunz No: VI/X.00-00
Locality:

Notes: