Mineralogy Database

Cobaltzippeite Mineral Data

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General Cobaltzippeite Information

Help on Chemical  Formula: Chemical Formula: Co++2(UO2)6(SO4)3(OH)10•16(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Co2(UO2)6(SO4)3(OH)10•16(H2O)
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Happy Jack mine, White Canyon, San Juan County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and for Franz Xaver Maxmillian Zippe (1791-1863), Austrian mineralogist.
Help on Synonym: Synonym: Cobalt-zippeite - Renamed Cobaltzippeite by Mineralogical Record, v39 (2008), p131

Cobaltzippeite Crystallography

Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.21(1), 3.59(0.45), 3.12(0.3),

Physical Properties of Cobaltzippeite

Help on Color: Color: Orange, Tan.
Help on Density: Density: 4.3
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Earthy (Dull)

Optical Properties of Cobaltzippeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.175 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1834,KC= 0.1561
Ncalc = 1.67
Help on Optical Data: Optical Data: Biaxial (-), a=1.747, b=1.779, g=1.84, bire=0.0930

Calculated Properties of Cobaltzippeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.79 gm/cc
note: Specific Gravity of Cobaltzippeite =4.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0045862265
Boson Index = 0.9954137735
Help on Photoelectric: Photoelectric: PECobaltzippeite =1,480.25 barns/electron
U=PECobaltzippeite x relectron=5,615.64 barns/cc.
Help on Radioactivity: 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
Curies (Ci)
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

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.10.04)Zippeite Group Zippeite K4(UO2)6(SO4)3(OH)10•4(H2O) C 2/m 2/m Natrozippeite Na4(UO2)6(SO4)3(OH)10•4(H2O) Unk Ortho Magnesiozippeite Mg(H2O)3.5(UO2)2(SO4)O2 C 2/m 2/m Nickelzippeite Ni2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho Zinc-zippeite Zn2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho Cobaltzippeite Co2(UO2)6(SO4)3(OH)10•16(H2O) Unk Ortho Marecottite! Mg3(H2O)18[(UO2)4O3(SO4)2]2•10(H2O) P1 1 Pseudojohannite! Cu6.5[(UO2)4O4(SO4)2]2(OH)5•25H2O P1 or P1 Tri IMA2009-008 Y2[(UO2)8O6(SO4)4(OH)2]•26H2O P1 1
Help on  Strunz Class: 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

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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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Dana No: Strunz No: 07.EC.05





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