Cobalt-zippeite Mineral Data

Cobalt-zippeite Mineral Data

General Cobalt-zippeite 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.

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Cobalt-zippeite Crystallography

Crystal System:

OrthorhombicSpace 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 Cobalt-zippeite

Color:

Orange, Tan.

Density:

4.3

Diaphaniety:

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 Cobalt-zippeite

Gladstone-Dale:

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

Optical Data:

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

Calculated Properties of Cobalt-zippeite

Electron Density:

r_electron=3.79 gm/cc
note: r_{Cobalt-zippeite}=4.30 gm/cc.

Fermion Index

Fermion Index = 0.00458
Boson Index = 0.99542

Photoelectric:

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

Radioactivity:

GRapi = 4,322,774.88 (Gamma Ray American Petroleum Institute Units)

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

**Estimated Radioactivity from Cobalt-zippeite** - 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	102,893,442	2.78E-03	4,322,774.88	1,421.19
100 gm / 3.54 cm	10,289,344	2.78E-04	432,277.49	142.12
10 gm / 1.64 cm	1,028,934	2.78E-05	43,227.75	14.21
1 gm / 7.63 mm	102,893	2.78E-06	4,322.77	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 Cobalt-zippeite 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

Cobalt-zippeite Classification

Dana Class:

31.10.4.6 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.10)miscellaneous

(31.10.4)Zippeite Group

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

31.10.4.2 Sodium-zippeite Na4(UO2)6(SO4)3(OH)10·4(H2O) Unk Ortho

31.10.4.3 Magnesium-zippeite Mg(H2O)3.5(UO2)2(SO4)O2 C 2/m 2/m

31.10.4.4 Nickel-zippeite Ni2(UO2)6(SO4)3(OH)10·16(H2O) Unk Ortho

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

31.10.4.6 Cobalt-zippeite Co2(UO2)6(SO4)3(OH)10·16(H2O) Unk Ortho

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

Strunz Class:

VI/D.20-60 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Uranylsulfates [UO2]4+ - [SO4]2-

VI/D.20 - Uranopilite - Rabejacite series

VI/D.20-05 Jachymovite! (UO2)8(SO4)(OH)14·13(H2O) P 2₁,P 2₁/m Mono

VI/D.20-10 Uranopilite [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O) P1 1

VI/D.20-20 Meta-uranopilite (UO2)6(SO4)(OH)10·5(H2O) Unk Ortho

VI/D.20-30 Sodium-zippeite Na4(UO2)6(SO4)3(OH)10·4(H2O) Unk Ortho

VI/D.20-40 Zippeite K4(UO2)6(SO4)3(OH)10·4(H2O) C 2/m 2/m

VI/D.20-50 Magnesium-zippeite Mg(H2O)3.5(UO2)2(SO4)O2 C 2/m 2/m

VI/D.20-60 Cobalt-zippeite Co2(UO2)6(SO4)3(OH)10·16(H2O) Unk Ortho

VI/D.20-70 Nickel-zippeite Ni2(UO2)6(SO4)3(OH)10·16(H2O) Unk Ortho

VI/D.20-80 Zinc-zippeite Zn2(UO2)6(SO4)3(OH)10·16(H2O) Unk Ortho

VI/D.20-85 Deliensite! Fe(UO2)2(SO4)2(OH)2·3(H2O) Pnnm or Pnn2 Ortho

VI/D.20-90 Rabejacite Ca(UO2)4(SO4)2(OH)6·6(H2O) Unk Ortho

Other Cobalt-zippeite 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 Cobalt-zippeite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Cobalt-zippeite

Co++2(UO2)6(SO4)3(OH)10·16(H2O)
Dana No: 31.10.4.6 Strunz No: VI/D.20-60
Locality:

Notes: