Oswaldpeetersite Mineral Data

General Oswaldpeetersite Information

Chemical Formula:

(UO2)2CO3(OH)2•4(H2O)

Composition:

Molecular Weight = 706.14 gm

Uranium 67.42 % U 76.48 % UO₂

Hydrogen 1.43 % H 12.76 % H₂O

Carbon 1.70 % C 6.23 % CO₂

Oxygen 29.45 % O

______ ______

100.00 % 95.47 % = TOTAL OXIDE

Empirical Formula:

(UO₂)₂(CO₃)(OH)₂•4(H₂O)

Environment:

Coating sandstone in organic-rich Permian-aged Shinarump Conglomerate.

IMA Status:

Approved IMA 2000 (Dana # Added)

Locality:

Jomac uranium mine, Brown's Rim, San Juan County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Maurice Oswald Peeters (1945-), structural crystallographer at the University of Leuven, Belgium.

Synonym:

IMA2000-034

Oswaldpeetersite Image

Images:

Oswaldpeetersite

Comments: Yellow oswaldpeetersite in matrix.
Location: Jomac Mine, White Canyon,White Canyon District (White Canyon), San Juan Co., Utah, USA. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Oswaldpeetersite

Comments: Greenish-yellow, acicular, radial-spherical blebs of oswaldpeetersite on matrix.
Location: Jomac Mine, San Juan County, Utah, USA. Scale: Picture size 5 mm.
© Paul M. Schumacher

Oswaldpeetersite Crystallography

Axial Ratios:

a:b:c =0.2938:1:1.3033

Cell Dimensions:

a = 4.1425, b = 14.098, c = 18.374, Z = 4; beta = 103.62° V = 1,042.88 Den(Calc)= 4.50

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.322(1)(114), 4.546(0.96)(031), 3.029(0.85)(043),8.95(0.65)(002), 7.54(0.63)(012), 2.273(0.62)(062), 3.463(0.62)(015), 4.262(0.6)(014),

Physical Properties of Oswaldpeetersite

Cleavage:

{hk0} Distinct

Color:

Canary yellow.

Diaphaneity:

Transparent

Fracture:

Weak - Hard to handle without causing serious harm or damage.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

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

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

pale yellow

Optical Properties of Oswaldpeetersite

Gladstone-Dale:

CI calc= -0.094 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1455,KC= 0.133
Ncalc = 1.6

Optical Data:

Biaxial (-), a=1.583, b=1.669, g=1.712, bire=0.1290

Calculated Properties of Oswaldpeetersite

Electron Density:

Bulk Density (Electron Density)=3.87 gm/cc
note: Specific Gravity of Oswaldpeetersite =4.50 gm/cc.

Fermion Index:

Fermion Index = 0.0051846422
Boson Index = 0.9948153578

Photoelectric:

PE_{Oswaldpeetersite}=1,776.47 barns/electron
U=PE_{Oswaldpeetersite} x r_electron=6,883.09 barns/cc.

Radioactivity:

GRapi = 4,947,831.30 (Gamma Ray American Petroleum Institute Units)
Concentration of Oswaldpeetersite per GRapi unit = 202.11 (PPB)

Oswaldpeetersite 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 Oswaldpeetersite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 614.75 ±153.69 grams of pure Oswaldpeetersite .

**Estimated Radioactivity from Oswaldpeetersite** - 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 / 7.52 cm	120,676,209	3.26E-03	4,947,831.30	1,626.68
100 gm / 3.49 cm	12,067,621	3.26E-04	494,783.13	162.67
10 gm / 1.62 cm	1,206,762	3.26E-05	49,478.31	16.27
1 gm / 7.52 mm	120,676	3.26E-06	4,947.83	1.63
0.1 gm / 3.49 mm	12,068	3.26E-07	494.78	0.16
0.01 gm / 1.62 mm	1,207	3.26E-08	49.48	0.02
0.001 gm / 0.75 mm	121	3.26E-09	4.95	0.00

Weight of pure Oswaldpeetersite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.50 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

Oswaldpeetersite Classification

Dana Class:

15.01.08.03 (15)Hydrated Carbonates

(15.01)where A+ (XO3) ï¿½ x(H2O)

(15.01.08)Joliotite Group

15.01.08.01 Joliotite (UO2)(CO3)•n(H2O),(n=2?) P 222, Pmm2 Ortho

15.01.08.02 Blatonite! UO2CO3•(H2O) Unk Hex

15.01.08.03 Oswaldpeetersite! (UO2)2CO3(OH)2•4(H2O) P 2₁/c 2/m

Strunz Class:

05.EA.20 05 - CARBONATES (NITRATES)

05.E - Uranyl Carbonates

05.EA -UO2:CO3 > 1:1

05.EA.20 Oswaldpeetersite! (UO2)2CO3(OH)2•4(H2O) P 2₁/c 2/m

Other Oswaldpeetersite Information

References:

NAME( MinRec, v 33, n 4, p 354) PHYS. PROP.(MinRec, v 33, n 4, p 354) OPTIC PROP.(MinRec, v 33, n 4, p 354)

See Also:

Links to other databases for Oswaldpeetersite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - Uranium Minerals

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Oswaldpeetersite

(UO2)2CO3(OH)2•4(H2O)
Dana No: 15.01.08.03 Strunz No: 05.EA.20
Locality:

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