Cobaltzippeite Mineral Data

General Cobaltzippeite Information

Chemical Formula:

Co++2(UO2)6(SO4)3(OH)10•16(H2O)

Composition:

Molecular Weight = 2,484.54 gm

Uranium 57.48 % U 65.21 % UO₂

Cobalt 4.74 % Co 6.68 % Co₂O₃

Hydrogen 1.70 % H 15.23 % H₂O

Sulfur 3.87 % S 9.67 % SO₃

Oxygen 32.20 % O

______ ______

100.00 % 96.78 % = TOTAL OXIDE

Empirical Formula:

Co₂(UO₂)₆(SO₄)₃(OH)₁₀•16(H₂O)

IMA Status:

Approved IMA 1976

Locality:

Happy Jack mine, White Canyon, San Juan County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for its composition and for Franz Xaver Maxmillian Zippe (1791-1863), Austrian mineralogist.

Synonym:

Cobalt-zippeite - Renamed Cobaltzippeite by Mineralogical Record, v39 (2008), p131

Cobaltzippeite Crystallography

Crystal System:

Orthorhombic Space Group: Unk

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

By Intensity(I/I_o): 7.21(1), 3.59(0.45), 3.12(0.3),

Physical Properties of Cobaltzippeite

Color:

Orange, Tan.

Density:

4.3

Diaphaneity:

Transparent to Translucent

Habit:

Botryoidal - "Grape-like" rounded forms (e.g.. malachite).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Earthy (Dull)

Optical Properties of Cobaltzippeite

Gladstone-Dale:

CI meas= -0.175 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1834,KC= 0.1561
Ncalc = 1.67

Optical Data:

Biaxial (-), a=1.747, b=1.779, g=1.84, bire=0.0930

Calculated Properties of Cobaltzippeite

Electron Density:

Bulk Density (Electron Density)=3.79 gm/cc
note: Specific Gravity of Cobaltzippeite =4.30 gm/cc.

Fermion Index:

Fermion Index = 0.0045862265
Boson Index = 0.9954137735

Photoelectric:

PE_{Cobaltzippeite}=1,480.25 barns/electron
U=PE_{Cobaltzippeite} x r_electron=5,615.64 barns/cc.

Radioactivity:

GRapi = 4,322,776.61 (Gamma Ray American Petroleum Institute Units)
Concentration of Cobaltzippeite per GRapi unit = 231.33 (PPB)

Cobaltzippeite 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) 7.04 ± 1.76 grams of pure Cobaltzippeite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 703.64 ±175.91 grams of pure Cobaltzippeite .

**Estimated Radioactivity from Cobaltzippeite** - 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 / 7.63 cm	102,893,456	2.78E-03	4,322,776.61	1,421.19
100 gm / 3.54 cm	10,289,346	2.78E-04	432,277.66	142.12
10 gm / 1.64 cm	1,028,935	2.78E-05	43,227.77	14.21
1 gm / 7.63 mm	102,893	2.78E-06	4,322.78	1.42
0.1 gm / 3.54 mm	10,289	2.78E-07	432.28	0.14
0.01 gm / 1.64 mm	1,029	2.78E-08	43.23	0.01
0.001 gm / 0.76 mm	103	2.78E-09	4.32	0.00

Weight of pure Cobaltzippeite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.30 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

Cobaltzippeite Classification

Dana Class:

31.10.04.06 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.10)miscellaneous

(31.10.04)Zippeite Group

31.10.04.01 Zippeite K4(UO2)6(SO4)3(OH)10•4(H2O) C 2/m 2/m

31.10.04.02 Natrozippeite Na4(UO2)6(SO4)3(OH)10•4(H2O) Unk Ortho

31.10.04.03 Magnesiozippeite Mg(H2O)3.5(UO2)2(SO4)O2 C 2/m 2/m

31.10.04.04 Nickelzippeite Ni2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

31.10.04.05 Zinc-zippeite Zn2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

31.10.04.06 Cobaltzippeite Co2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

31.10.04.07 Marecottite! Mg3(H2O)18[(UO2)4O3(SO4)2]2•10(H2O) P1 1

31.10.04.08 Pseudojohannite! Cu6.5[(UO2)4O4(SO4)2]2(OH)5•25H2O P1 or P1 Tri

31.10.04.09 IMA2009-008 Y2[(UO2)8O6(SO4)4(OH)2]•26H2O P1 1

Strunz Class:

07.EC.05 07 - SULFATES (SELENATES, TELLURATES)

07.E - Uranyl Sulfates

07.EC -With medium-sized and large cations

07.EC.05 Cobaltzippeite Co2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

07.EC.05 Magnesiozippeite Mg(H2O)3.5(UO2)2(SO4)O2 C 2/m 2/m

07.EC.05 Nickelzippeite Ni2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

07.EC.05 Natrozippeite Na4(UO2)6(SO4)3(OH)10•4(H2O) Unk Ortho

07.EC.05 Zinc-zippeite Zn2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho

07.EC.05 Zippeite K4(UO2)6(SO4)3(OH)10•4(H2O) C 2/m 2/m

Other Cobaltzippeite 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 Cobaltzippeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Cobaltzippeite

Co++2(UO2)6(SO4)3(OH)10•16(H2O)
Dana No: 31.10.04.06 Strunz No: 07.EC.05
Locality:

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