Metavandendriesscheite Mineral Data

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General Metavandendriesscheite Information

Chemical Formula:

PbU7O22•n(H2O)(n<12)

Composition:

Molecular Weight = 2,405.54 gm

Uranium 69.27 % U 83.23 % UO₃

Hydrogen 0.84 % H 7.49 % H₂O

Lead 8.61 % Pb 9.28 % PbO

Oxygen 21.28 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbU₇O₂₂•10(H₂O)

Environment:

"Gummite zone" of the uranium deposit.

IMA Status:

Approved IMA 1960

Locality:

Shinkolobwe, Shaba, Zaire. Link to MinDat.org Location Data.

Name Origin:

Named for Adrien Vandendriessche (1914-1940), Belgain mineralogist and geologist. Meta is used for dehydrated vandendriesscheite.

Name Pronunciation:

Metavandendriesscheite + Pronunciation

Metavandendriesscheite Image

Images:

Metavandendriesscheite

Comments: Botryoidal crusts of orange metavandendriesscheite with red- to yellow-brown prismatic masyuite.
Location: Giftkiesstollen, Jachymov, Bohemia, Czech Republic. Scale: Not Given.
© Diederik Visser

Metavandendriesscheite Crystallography

Axial Ratios:

a:b:c =0.3405:1:1.0488

Cell Dimensions:

a = 14.07, b = 41.31, c = 43.33, Z = 35; V = 25,184.77 Den(Calc)= 5.55

Crystal System:

OrthorhombicSpace Group: Pmma,Pm2a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.61(1), 7.25(1), 3.17(0.8),2.52(0.3), 3.53(0.3), 2.03(0.2), 4.53(0.1),

Physical Properties of Metavandendriesscheite

Cleavage:

{001} Perfect

Color:

Orange, Amber.

Density:

5.45

Diaphaneity:

Transparent to Translucent

Habit:

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

Hardness:

3 - Calcite

Luster:

Adamantine

Optical Properties of Metavandendriesscheite

Gladstone-Dale:

CI meas= -0.12 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.099 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1495,KPDmeas= 0.1523,KC= 0.136
Ncalc = 1.74 - 1.75

Optical Data:

Biaxial (-), a=1.78, b=1.85, g=1.86, bire=0.0800, 2V(Calc)=40, 2V(Meas)=60.

Pleochroism (x):

colorless.

Pleochroism (y):

golden yellow.

Pleochroism (z):

golden yellow.

Calculated Properties of Metavandendriesscheite

Electron Density:

Bulk Density (Electron Density)=4.62 gm/cc
note: Specific Gravity of Metavandendriesscheite =5.55 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Metavandendriesscheite}=2,045.06 barns/electron
U=PE_{Metavandendriesscheite} x r_electron=9,455.47 barns/cc.

Radioactivity:

GRapi = 4,918,507.44 (Gamma Ray American Petroleum Institute Units)
Concentration of Metavandendriesscheite per GRapi unit = 203.31 (PPB)

Metavandendriesscheite 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) 6.18 ± 1.55 grams of pure Metavandendriesscheite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 618.41 ±154.60 grams of pure Metavandendriesscheite .

**Estimated Radioactivity from Metavandendriesscheite** - 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 / 7.01 cm	123,984,626	3.35E-03	4,918,507.44	1,617.04
100 gm / 3.25 cm	12,398,463	3.35E-04	491,850.74	161.70
10 gm / 1.51 cm	1,239,846	3.35E-05	49,185.07	16.17
1 gm / 7.01 mm	123,985	3.35E-06	4,918.51	1.62
0.1 gm / 3.25 mm	12,398	3.35E-07	491.85	0.16
0.01 gm / 1.51 mm	1,240	3.35E-08	49.19	0.02
0.001 gm / 0.70 mm	124	3.35E-09	4.92	0.00

Weight of pure Metavandendriesscheite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.55 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

Metavandendriesscheite Classification

Dana Class:

05.08.01.02 (05)Oxides Containing Uranium and Thorium

(05.08)with a cation charge of 6+ containing Pb and sigificant water of hydration

(05.08.01)Dana Group

05.08.01.01 Vandendriesscheite Pb(UO2)10O6(OH)11•11(H2O) P bca 2/m 2/m 2/m

05.08.01.02 Metavandendriesscheite PbU7O22•n(H2O)(n<12) Pmma,Pm2a Ortho

Strunz Class:

04.GB.40 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.40 Metavandendriesscheite PbU7O22•n(H2O)(n<12) Pmma,Pm2a Ortho

04.GB.40 Vandendriesscheite Pb(UO2)10O6(OH)11•11(H2O) P bca 2/m 2/m 2/m

Other Metavandendriesscheite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Metavandendriesscheite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - MinMax(Deutsch)
10 - MinMax(English)
11 - Mineralienatlas (Deutsch)
12 - QUT Mineral Atlas
13 - Ruff.Info

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Metavandendriesscheite

PbU7O22•n(H2O)(n<12)
Dana No: 05.08.01.02 Strunz No: 04.GB.40
Locality:

Notes: