Magnesiozippeite Mineral Data

Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals

General Magnesiozippeite Information

Chemical Formula:

Mg(H2O)3.5(UO2)2(SO4)O2

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

Empirical Formula:

Mg(H₂O)_3.5(UO₂)₂(SO₄)O₂

Environment:

Secondary mineral formed at low pH (<5) from the oxidation of sulfides in uranium-bearing deposits.

IMA Status:

Approved IMA 1976

Locality:

Lucky StrikeNo. 2 mine, Emery 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:

IMA2000-G

Magnesium-zippeite - Renamed as Magnesiozippeite by Mineralogical Record, v330 (2008), p131

Mg-zippeite

Zippeite-Mg

Magnesiozippeite Image

Images:

Click Here for Larger Magnesiozippeite Image

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

Axial Ratios:

a:b:c =0.6102:1:1.249

Cell Dimensions:

a = 8.654, b = 14.182, c = 17.714, Z = 6; beta = 103.92° V = 2,110.21 Den(Calc)= 3.57

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 3.58(1), 3.48(0.8), 7.2(0.8),

Physical Properties of Magnesiozippeite

Color:

Yellow, Yellowish orange.

Density:

3.3

Diaphaneity:

Transparent to Translucent

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Earthy (Dull)

Optical Properties of Magnesiozippeite

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

Optical Data:

Biaxial (?), a=1.7, b=1.74, g=1.79, bire=0.0900

Calculated Properties of Magnesiozippeite

Electron Density:

Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Magnesiozippeite =3.57 gm/cc.

Fermion Index:

Fermion Index = 0.0082111719
Boson Index = 0.9917888281

Photoelectric:

PE_{Magnesiozippeite}=1,651.86 barns/electron
U=PE_{Magnesiozippeite} x r_electron=5,105.03 barns/cc.

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
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 / 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

Dana Class:

31.10.04.03 (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 Magnesiozippeite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed., AmMin v 88, p 676) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Magnesiozippeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Magnesiozippeite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Magnesiozippeite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Magnesiozippeite Mineral Data :

Ask about Magnesiozippeite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Magnesiozippeite Specimen Label here :

Magnesiozippeite

Mg(H2O)3.5(UO2)2(SO4)O2
Dana No: 31.10.04.03 Strunz No: 07.EC.05
Locality:

Notes: