Rauvite Mineral Data

General Rauvite Information

Chemical Formula:

Ca(UO2)2V+++++10O28•16(H2O)

Composition:

Molecular Weight = 1,825.78 gm

Calcium 2.20 % Ca 3.07 % CaO

Uranium 26.07 % U 29.58 % UO₂

Vanadium 27.90 % V 49.81 % V₂O₅

Hydrogen 1.77 % H 15.79 % H₂O

Oxygen 42.06 % O

______ ______

100.00 % 98.25 % = TOTAL OXIDE

Empirical Formula:

Ca(UO₂)₂V⁵⁺₁₀O₂₈•16(H₂O)

Environment:

Oxidized zones of U-V ores in Colorado Plateau-type deposits.

IMA Status:

Valid Species (Pre-IMA) 1922

Locality:

Flat Top Mesa, San Rafael District, Emery County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the composition, RAdium, Uranium, and Vanadium.

Name Pronunciation:

Rauvite

Rauvite Image

Images:

Rauvite

Comments: Irregular grains of dark-colored rauvite in matrix.
Location: Monument No. 2 Mine, Monument Valley, Apache County, Arizona, USA. Scale: Picture size 2.5 mm.
© Paul M. Schumacher

Images:

Rauvite

Comments: Brownish-yellow scaly rauvite on sandstone.
Location: Monument Valley, Apache County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rauvite Crystallography

Crystal System:

Amorphous- No Crystals

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

By Intensity(I/I_o): 10.7(1), 2.95(0.5), 3.49(0.4),

Physical Properties of Rauvite

Cleavage:

None

Color:

Bluish black, Brown red, Orange, Purple red.

Density:

2.92

Diaphaneity:

Semitransparent

Fracture:

Brittle - Sectile - Brittle fracture with slightly sectile shavings possible.

Habit:

Compact - Occurs as a compact mass.

Habit:

Waxy - Looks like candle wax.

Luminescence:

Non-fluorescent.

Luster:

Adamantine - Waxy

Magnetism:

Nonmagnetic

Streak:

brown

Optical Properties of Rauvite

Gladstone-Dale:

CI meas= -0.21 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3134,KC= 0.2591
Ncalc = 1.76

Optical Data:

Biaxial (-), a=1.88, g=1.95, bire=0.0700

Calculated Properties of Rauvite

Electron Density:

Bulk Density (Electron Density)=2.72 gm/cc
note: Specific Gravity of Rauvite =2.92 gm/cc.

Fermion Index:

Fermion Index = 0.0028090648
Boson Index = 0.9971909352

Photoelectric:

PE_Rauvite= 641.18 barns/electron
U=PE_Rauvite x r_electron=1,743.27 barns/cc.

Radioactivity:

GRapi = 2,069,413.69 (Gamma Ray American Petroleum Institute Units)
Concentration of Rauvite per GRapi unit = 483.23 (PPB)

Rauvite 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) 14.70 ± 3.67 grams of pure Rauvite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1469.8 ±367.46 grams of pure Rauvite .

**Estimated Radioactivity from Rauvite** - 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 / 8.68 cm	46,672,945	1.26E-03	2,069,413.69	680.36
100 gm / 4.03 cm	4,667,295	1.26E-04	206,941.37	68.04
10 gm / 1.87 cm	466,729	1.26E-05	20,694.14	6.80
1 gm / 8.68 mm	46,673	1.26E-06	2,069.41	0.68
0.1 gm / 4.03 mm	4,667	1.26E-07	206.94	0.07
0.01 gm / 1.87 mm	467	1.26E-08	20.69	0.01
0.001 gm / 0.87 mm	47	1.26E-09	2.07	0.00

Weight of pure Rauvite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.92 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

Rauvite Classification

Dana Class:

47.04.04.01 (47)Vanadium Oxysalts

(47.04)(Hydrated Containing V++++ and V+++++)

(47.04.04)Dana Group

47.04.04.01 Rauvite Ca(UO2)2V10O28•16(H2O) None

Strunz Class:

04.HB.40 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.40 Rauvite Ca(UO2)2V10O28•16(H2O) None

Other Rauvite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Dana) OPTIC PROP.(AntBidBlaNic4)

See Also:

Links to other databases for Rauvite :
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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Rauvite

Ca(UO2)2V+++++10O28•16(H2O)
Dana No: 47.04.04.01 Strunz No: 04.HB.40
Locality:

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