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Kamotoite-(Y) Mineral Data

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General Kamotoite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (Y,Nd,Gd)2U++++++4(CO3)3O12•14.5(H2O)
Help on Composition: Composition: Molecular Weight = 1,790.08 gm
   Gadolinium   1.76 %  Gd    2.03 % Gd2O3
   Yttrium      6.46 %  Y     8.20 % Y2O3
   Uranium     53.19 %  U    63.91 % UO3
   Hydrogen     1.63 %  H    14.59 % H2O
   Carbon       2.01 %  C     7.38 % CO2
   Neodymium    3.22 %  Nd    3.76 % Nd2O3
   Oxygen      31.73 %  O
              ______        ______ 
              100.00 %       99.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y1.3Nd0.4Gd0.2U4(CO3)3O12•14.5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Kamoto, southern Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality
Help on Name Pronunciation: Name Pronunciation: Kamotoite-(Y) + Pronunciation Say KAMOTOITE-(Y)
 

Kamotoite-(Y) Image

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  Kamotoite-(Y)

Comments: Bright greenish yellow kamotoite-(Y) crystals.
Location: Kamoto mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Kamotoite-(Y)

Comments: Bright yellow, feather-like kamotoite-(Y) crystal habits.
Location: Kamoto mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Kamotoite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.6411:1:0.9582
Help on Cell Dimensions: Cell Dimensions: a = 21.22, b = 12.93, c = 12.39, Z = 4; beta = 115.3° V = 3,073.43 Den(Calc)= 3.87
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.48(1), 8.49(0.8), 3.054(0.6),
 

Physical Properties of Kamotoite-(Y)

Help on Cleavage: Cleavage: {001} Good, {010} Distinct
Help on Color: Color: Yellow, Bright yellow.
Help on Density: Density: 3.93
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Kamotoite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.047 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.063 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1724,KPDmeas= 0.1698,KC= 0.1622
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (-), a=1.604, b=1.667, g=1.731, bire=0.1270, 2V(Calc)=86, 2V(Meas)=87.
 

Calculated Properties of Kamotoite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.45 gm/cc
note: Specific Gravity of Kamotoite-(Y) =3.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEKamotoite-(Y) =1,414.10 barns/electron
U=PEKamotoite-(Y) x relectron=4,883.49 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,988,551.91 (Gamma Ray American Petroleum Institute Units)
Concentration of Kamotoite-(Y) per GRapi unit = 250.72 (PPB)

Kamotoite-(Y) 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) 7.63 ± 1.91 grams of pure Kamotoite-(Y) .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 762.60 ±190.65 grams of pure Kamotoite-(Y) .

Estimated Radioactivity from Kamotoite-(Y) - 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 / 7.86 cm 95,318,795 2.58E-03 3,988,551.91 1,311.30
100 gm / 3.65 cm 9,531,880 2.58E-04 398,855.19 131.13
10 gm / 1.69 cm 953,188 2.58E-05 39,885.52 13.11
1 gm / 7.86 mm 95,319 2.58E-06 3,988.55 1.31
0.1 gm / 3.65 mm 9,532 2.58E-07 398.86 0.13
0.01 gm / 1.69 mm 953 2.58E-08 39.89 0.01
0.001 gm / 0.79 mm 95 2.58E-09 3.99 0.00

Weight of pure Kamotoite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.93 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 ( 0.25 % Th) From Sum REE Elements ( 4.98 % REE)
 

Kamotoite-(Y) Classification

Help on  Dana Class: Dana Class: 16b.03.03.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.03)where Am Bn (XO3)p Zq � x(H2O), (m+n):p = 2:1
  (16b.03.03)Dana Group
 
16b.03.03.01 Kamotoite-(Y) (Y,Nd,Gd)2U4(CO3)3O12•14.5(H2O) P 21/a 2/m
Help on  Strunz Class: Strunz Class: 05.EA.30 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.EA -UO2:CO3 > 1:1
 
05.EA.30 Kamotoite-(Y) (Y,Nd,Gd)2U4(CO3)3O12•14.5(H2O) P 21/a 2/m
 

Other Kamotoite-(Y) Information

Help on References: References: PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)
Help on See Also: See Also: Links to other databases for Kamotoite-(Y) :
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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Print or Cut-and-Paste your Kamotoite-(Y) Specimen Label here :

Kamotoite-(Y)

(Y,Nd,Gd)2U++++++4(CO3)3O12•14.5(H2O)
Dana No: 16b.03.03.01 Strunz No: 05.EA.30
Locality:

 

Notes:

 

 
   
 


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