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Magnesiozippeite Mineral Data

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General Magnesiozippeite Information

Help on Chemical  Formula: Chemical Formula: Mg(H2O)3.5(UO2)2(SO4)O2
Help on Composition: Composition: Molecular Weight = 755.48 gm
   Magnesium   3.22 %  Mg    5.33 % MgO
   Uranium    63.01 %  U    71.49 % UO2
   Hydrogen    0.93 %  H     8.35 % H2O
   Sulfur      4.24 %  S    10.60 % SO3
   Oxygen     28.59 %  O
             ______        ______ 
             100.00 %       95.76 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(H2O)3.5(UO2)2(SO4)O2
Help on Environment: Environment: Secondary mineral formed at low pH (<5) from the oxidation of sulfides in uranium-bearing deposits.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Lucky StrikeNo. 2 mine, Emery 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: IMA2000-G
  Magnesium-zippeite - Renamed as Magnesiozippeite by Mineralogical Record, v330 (2008), p131

Magnesiozippeite Image

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  Magnesiozippeite   Marecottite

Comments: Powdery and crystalline aggregates of red-brown marecottite and yellow magnesiozippeite on matrix.
Location: Svornost Mine, Jachymov, Bohemia, Czech Republic. Scale: Specimen Size 6.5x9 cm.
© Diederik Visser

Magnesiozippeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6102:1:1.249
Help on Cell Dimensions: Cell Dimensions: a = 8.654, b = 14.182, c = 17.714, Z = 6; beta = 103.92° V = 2,110.21 Den(Calc)= 3.57
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.58(1), 3.48(0.8), 7.2(0.8),

Physical Properties of Magnesiozippeite

Help on Color: Color: Yellow, Yellowish orange.
Help on Density: Density: 3.3
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
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 Magnesiozippeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.742 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.61 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2082,KPDmeas= 0.2253,KC= 0.1293
Ncalc = 1.43 - 1.46
Help on Optical Data: Optical Data: Biaxial (?), a=1.7, b=1.74, g=1.79, bire=0.0900

Calculated Properties of Magnesiozippeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Magnesiozippeite =3.57 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0082111719
Boson Index = 0.9917888281
Help on Photoelectric: Photoelectric: PEMagnesiozippeite =1,651.86 barns/electron
U=PEMagnesiozippeite x relectron=5,105.03 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,649,748.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Magnesiozippeite per GRapi unit = 215.07 (PPB)

Magnesiozippeite 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) 6.54 ± 1.64 grams of pure Magnesiozippeite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 654.16 ±163.54 grams of pure Magnesiozippeite .

Estimated Radioactivity from Magnesiozippeite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.12 cm 112,795,528 3.05E-03 4,649,748.92 1,528.68
100 gm / 3.77 cm 11,279,553 3.05E-04 464,974.89 152.87
10 gm / 1.75 cm 1,127,955 3.05E-05 46,497.49 15.29
1 gm / 8.12 mm 112,796 3.05E-06 4,649.75 1.53
0.1 gm / 3.77 mm 11,280 3.05E-07 464.97 0.15
0.01 gm / 1.75 mm 1,128 3.05E-08 46.50 0.02
0.001 gm / 0.81 mm 113 3.05E-09 4.65 0.00

Weight of pure Magnesiozippeite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.57 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

Magnesiozippeite 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 Magnesiozippeite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed., AmMin v 88, p 676) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Magnesiozippeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 07.EC.05





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