Mineralogy Database

Protasite Mineral Data

Search Webmineral :
  
Advertisment

General Protasite Information

Help on Chemical  Formula: Chemical Formula: Ba(UO2)3O3(OH)2•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,083.47 gm
   Barium    12.67 %  Ba   14.15 % BaO
   Uranium   65.91 %  U    74.77 % UO2
   Hydrogen   0.74 %  H     6.65 % H2O
   Oxygen    20.67 %  O
            ______        ______ 
            100.00 %       95.57 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba(UO2)3O3(OH)2•3(H2O)
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Shinkolobwe, Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jean Protas (1931-), University of Nancy, France.
Help on Name Pronunciation: Name Pronunciation: Protasite + Pronunciation Say PROTASITE
Help on Synonym: Synonym: ICSD 202479
  PDF 39-349
 

Protasite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Protasite

Comments: Orange crystals of protasite on matrix.
Location: Shinkolobwe mine (Kasolo mine), Shaba (Katanga), Congo (Zaïre). Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Protasite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7027:1:0.9633
Help on Cell Dimensions: Cell Dimensions: a = 12.2949, b = 7.2206, c = 6.9558, Z = 2; beta = 90.401° V = 617.50 Den(Calc)= 5.83
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Pn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.14(1), 7.06(0.5), 3.58(0.35),
 

Physical Properties of Protasite

Help on Cleavage: Cleavage: {010} Good
Help on Color: Color: Light orange.
Help on Density: Density: 5.827
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Hackly - Jagged, torn surfaces, (e.g. fractured metals).
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Luster: Luster: Subadamantine
 

Optical Properties of Protasite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.204 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.203 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1389,KPDmeas= 0.139,KC= 0.1155
Ncalc = 1.67
Help on Optical Data: Optical Data: Biaxial (-), b=1.79-1.83, g=1.79-1.83, , 2V(Meas)=60-65.
 

Calculated Properties of Protasite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.86 gm/cc
note: Specific Gravity of Protasite =5.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEProtasite =1,853.03 barns/electron
U=PEProtasite x relectron=9,013.68 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,687,273.28 (Gamma Ray American Petroleum Institute Units)
Concentration of Protasite per GRapi unit = 213.34 (PPB)

Protasite 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) 6.49 ± 1.62 grams of pure Protasite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 648.92 ±162.23 grams of pure Protasite .

Estimated Radioactivity from Protasite - very strong
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 / 6.89 cm 117,974,340 3.19E-03 4,687,273.28 1,541.02
100 gm / 3.20 cm 11,797,434 3.19E-04 468,727.33 154.10
10 gm / 1.49 cm 1,179,743 3.19E-05 46,872.73 15.41
1 gm / 6.89 mm 117,974 3.19E-06 4,687.27 1.54
0.1 gm / 3.20 mm 11,797 3.19E-07 468.73 0.15
0.01 gm / 1.49 mm 1,180 3.19E-08 46.87 0.02
0.001 gm / 0.69 mm 118 3.19E-09 4.69 0.00

Weight of pure Protasite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.83 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
 

Protasite Classification

Help on  Dana Class: Dana Class: 05.05.03.01 (05)Oxides Containing Uranium and Thorium
  (05.05)with alkaline and alkaline-earth elements (hydrated)
  (05.05.03)Dana Group
 
05.05.03.01 Protasite Ba(UO2)3O3(OH)2•3(H2O) Pn m
Help on  Strunz Class: Strunz Class: 04.GB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.G - Uranyl Hydroxides
  04.GB -With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
 
04.GB.10 Billietite Ba(UO2)6O4(OH)6•8(H2O) Pbn21 mm2
 
04.GB.10 Becquerelite Ca(UO2)6O4(OH)6•8(H2O) Pn21a mm2
 
04.GB.10 Protasite Ba(UO2)3O3(OH)2•3(H2O) Pn m
 

Other Protasite Information

Help on References: References: NAME( Dana8) 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 Protasite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
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
15 - Uranium Minerals
16 - WWW-MINCRYST

Search for Protasite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Protasite :

Ask about Protasite 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 Espaņol

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

Protasite

Ba(UO2)3O3(OH)2•3(H2O)
Dana No: 05.05.03.01 Strunz No: 04.GB.10
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.