Mineralogy Database

Wyartite Mineral Data

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General Wyartite Information

Help on Chemical  Formula: Chemical Formula: Ca3U++++(UO2)6(CO3)2(OH)18•3-5(H2O)
Help on Composition: Composition: Molecular Weight = 2,458.63 gm
   Calcium    4.89 %  Ca    6.84 % CaO
   Uranium   67.77 %  U    76.88 % UO2
   Hydrogen   0.98 %  H     8.79 % H2O
   Carbon     0.98 %  C     3.58 % CO2
   Oxygen    25.38 %  O
            ______        ______ 
            100.00 %       96.10 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3U(UO2)6(CO3)2(OH)18•3(H2O)
Help on Environment: Environment: Alteration product of red rims around uraninite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Shinkolobwe, Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jean Wyart (1902-1992), mineralogist at the Sorbonne, Paris.
Help on Name Pronunciation: Name Pronunciation: Wyartite Say WYARTITE
 

Wyartite Image

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  Wyartite   Rutherfordine

Comments: Brown, acicular wyartite crystals next to bright yellow rutherfordine tufts.
Location: Shinokolbwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wyartite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5889:1:2.9632
Help on Cell Dimensions: Cell Dimensions: a = 11.25, b = 7.08, c = 20.98, Z = 2; V = 1,671.06 Den(Calc)= 4.89
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.46(1), 3.47(0.2), 4.22(0.18),
 

Physical Properties of Wyartite

Help on Cleavage: Cleavage: {001} Perfect, {010} Perfect
Help on Color: Color: Greenish black, Black, Black violet.
Help on Density: Density: 4.69
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: brownish violet
 

Optical Properties of Wyartite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.491 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.43 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.184,KPDmeas= 0.1919,KC= 0.1287
Ncalc = 1.6 - 1.63
Help on Optical Data: Optical Data: Biaxial (-), a=1.89, g=1.91, bire=0.0200, 2V(Meas)=48.
Help on Pleochroism (x): Pleochroism (x): gray.
Help on Pleochroism (y): Pleochroism (y): violet.
Help on Pleochroism (z): Pleochroism (z): lavender blue.
 

Calculated Properties of Wyartite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.18 gm/cc
note: Specific Gravity of Wyartite =4.89 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.005176206
Boson Index = 0.994823794
Help on Photoelectric: Photoelectric: PEWyartite =1,797.40 barns/electron
U=PEWyartite x relectron=7,521.55 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,943,362.43 (Gamma Ray American Petroleum Institute Units)
Concentration of Wyartite per GRapi unit = 202.29 (PPB)

Wyartite 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) 6.15 ± 1.54 grams of pure Wyartite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 615.30 ±153.83 grams of pure Wyartite .

Estimated Radioactivity from Wyartite - 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 / 7.31 cm 121,307,705 3.28E-03 4,943,362.43 1,625.22
100 gm / 3.39 cm 12,130,771 3.28E-04 494,336.24 162.52
10 gm / 1.57 cm 1,213,077 3.28E-05 49,433.62 16.25
1 gm / 7.31 mm 121,308 3.28E-06 4,943.36 1.63
0.1 gm / 3.39 mm 12,131 3.28E-07 494.34 0.16
0.01 gm / 1.57 mm 1,213 3.28E-08 49.43 0.02
0.001 gm / 0.73 mm 121 3.28E-09 4.94 0.00

Weight of pure Wyartite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.89 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
 

Wyartite Classification

Help on  Dana Class: Dana Class: 16b.07.04.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.07)Dana Type
  (16b.07.04)Dana Group
 
16b.07.04.01 Wyartite Ca3U(UO2)6(CO3)2(OH)18•3-5(H2O) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 05.EA.15 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.EA -UO2:CO3 > 1:1
 
05.EA.15 Wyartite Ca3U(UO2)6(CO3)2(OH)18•3-5(H2O) P 212121 2 2 2
 

Other Wyartite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Wyartite :
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

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

Wyartite

Ca3U++++(UO2)6(CO3)2(OH)18•3-5(H2O)
Dana No: 16b.07.04.01 Strunz No: 05.EA.15
Locality:

 

Notes:

 

 
   
 


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