Mineralogy Database

Metatyuyamunite Mineral Data

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General Metatyuyamunite Information

Help on Chemical  Formula: Chemical Formula: Ca(UO2)2V2O8•3(H2O)
Help on Composition: Composition: Molecular Weight = 864.06 gm
   Calcium    4.64 %  Ca    6.49 % CaO
   Uranium   55.10 %  U    62.50 % UO2
   Vanadium  11.79 %  V    21.05 % V2O5
   Hydrogen   0.70 %  H     6.25 % H2O
   Oxygen    27.77 %  O
            ______        ______ 
            100.00 %       96.30 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca(UO2)2V5+2O8•3(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1950
Help on Locality: Locality: Jo Dandy mine, Paradox Valley, Montrose Co., Colorado, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the lower hydrate of tyuyamunite.
Help on Name Pronunciation: Name Pronunciation: Metatyuyamunite + Pronunciation Say METATYUYAMUNITE
 

Metatyuyamunite Image

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  Metatyuyamunite

Comments: Bright yellow bladed crystals of metatyuyamunite.
Location: Mashamba mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Metatyuyamunite   Metatorbernite

Comments: Yellow, platy metatyuyamunite and transparent, tabular green metatorbernite crystals with a minor amount of white, snowy-looking saleeite.
Location: Mashamba West Mine, Kolwezi, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 0.5 cm.
© Paul M. Schumacher

Metatyuyamunite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2414:1:2.0424
Help on Cell Dimensions: Cell Dimensions: a = 10.54, b = 8.49, c = 17.34, Z = 4; V = 1,551.66 Den(Calc)= 3.70
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.51(1), 4.22(0.8), 3.26(0.6),
 

Physical Properties of Metatyuyamunite

Help on Cleavage: Cleavage: {001} Perfect, {101} Distinct, {100} Distinct
Help on Color: Color: Greenish yellow, Yellow, Yellow green, Dark green.
Help on Density: Density: 3.8 - 3.9, Average = 3.84
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Subadamantine
Help on Streak: Streak: light yellow
 

Optical Properties of Metatyuyamunite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.22 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.269 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2144,KPDmeas= 0.2061,KC= 0.169
Ncalc = 1.63 - 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.68, b=1.835, g=1.865, bire=0.1850, 2V(Calc)=44, 2V(Meas)=45.
 

Calculated Properties of Metatyuyamunite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.35 gm/cc
note: Specific Gravity of Metatyuyamunite =3.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0044586524
Boson Index = 0.9955413476
Help on Photoelectric: Photoelectric: PEMetatyuyamunite =1,439.40 barns/electron
U=PEMetatyuyamunite x relectron=4,822.99 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,087,201.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Metatyuyamunite per GRapi unit = 244.67 (PPB)

Metatyuyamunite 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) 7.44 ± 1.86 grams of pure Metatyuyamunite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 744.19 ±186.05 grams of pure Metatyuyamunite .

Estimated Radioactivity from Metatyuyamunite - 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 / 7.92 cm 98,621,159 2.67E-03 4,087,201.36 1,343.74
100 gm / 3.67 cm 9,862,116 2.67E-04 408,720.14 134.37
10 gm / 1.71 cm 986,212 2.67E-05 40,872.01 13.44
1 gm / 7.92 mm 98,621 2.67E-06 4,087.20 1.34
0.1 gm / 3.67 mm 9,862 2.67E-07 408.72 0.13
0.01 gm / 1.71 mm 986 2.67E-08 40.87 0.01
0.001 gm / 0.79 mm 99 2.67E-09 4.09 0.00

Weight of pure Metatyuyamunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.85 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
 

Metatyuyamunite Classification

Help on  Dana Class: Dana Class: 40.02a.26.02 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.26)Dana Group
 
40.02a.26.01 Tyuyamunite Ca(UO2)2V2O8•5-8(H2O) Pnan 2/m 2/m 2/m
 
40.02a.26.02 Metatyuyamunite Ca(UO2)2V2O8•3(H2O) Pnam 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.HB.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HB -Uranyl Sorovanadates
 
04.HB.25 Metatyuyamunite Ca(UO2)2V2O8•3(H2O) Pnam 2/m 2/m 2/m
 
04.HB.25 Tyuyamunite Ca(UO2)2V2O8•5-8(H2O) Pnan 2/m 2/m 2/m
 

Other Metatyuyamunite Information

Help on References: References: 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 Metatyuyamunite :
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

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

Metatyuyamunite

Ca(UO2)2V2O8•3(H2O)
Dana No: 40.02a.26.02 Strunz No: 04.HB.25
Locality:

 

Notes:

 

 
   
 


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