Marthozite Mineral Data + Say MARTHOZITE


[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Marthozite Information

Help on Chemical  Formula: Chemical Formula: Cu[(UO2)3(SeO3)2O2]·8(H2O)
Help on Composition: Composition: Molecular Weight = 1,303.67 gm
   Uranium   54.78 %  U    62.14 % UO2
   Copper     4.87 %  Cu    6.10 % CuO
   Hydrogen   1.24 %  H    11.06 % H2O
   Selenium  12.11 %  Se   17.02 % SeO2
   Oxygen    27.00 %  O
            ______        ______ 
            100.00 %       96.32 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu(UO2)3(SeO3)2(O)2·8(H2O)
Help on Environment: Environment: In cavities in selenian digenite. Dehydrates in air to (H2O)6.
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Musonoi mine, Kolwezi, Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Aime Marthoz (1864-1962), French mineralogist and inspector General, Bureau de Recherches Geolgiques et Miniere.
 

Marthozite Image

Click Here for Larger Marthozite Image in a New Browser Window Images:
Click Here for Larger Marthozite Image

Marthozite

Comments: Yellowish green coating of marthozite on matrix.
Location: Musonoi Mine, Katanga, Democratic Republic of the Congo. Scale: Not Given.
© John Veevaert

Click Here for Larger Marthozite Image in a New Browser Window Images:
Click Here for Larger Marthozite Image

Marthozite

Comments: Olive green crystal of marthozite showing multiple face development on main crystal. Schumacher Collection.
Location: Musonoi Mine, Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Za?re). Scale: Picture size 5 mm.
© Paul M. Schumacher

Marthozite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4247:1:1.0467
Help on Cell Dimensions: Cell Dimensions: a = 6.9879, b = 16.4537, c = 17.2229, Z = 4; V = 1,980.23 Den(Calc)= 4.37
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Pbn21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.09(1), 8.23(1), 3.22(0.8),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: [ 1 0 0] [ 1 0 3] [ 1 0 5] [ 1 0 1] [ 1 4 1.2] [ 0 2 1] [ 1 4 0] [ 0 0 1] [ 0 1 0]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Click Here for Large Marthozite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Cooper M A , Hawthorne F C , The Canadian Mineralogist , 39 (2001) p.797-807, Structure topology and hydrogen bonding in mathozite, Cu[(UO2)3(SeO3)2O2](H2O)8,, a comparison with guilleminite, Ba[(UO2)3(SeO3)2O2](H2O)3

 

Physical Properties of Marthozite

Help on Cleavage: Cleavage: [100] Perfect, [010] Indistinct
Help on Color: Color: Greenish brown, Yellow green.
Help on Density: Density: 4.44
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Hardness: Hardness: 6 - Orthoclase
 

Optical Properties of Marthozite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.23 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.25 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1791,KPDmeas= 0.1762,KC= 0.1433
Help on Optical Data: Optical Data: Biaxial (-), b=1.78-1.785, g=1.78-1.785, , 2V(Meas)=37-42.
Help on Pleochroism (x): Pleochroism (x): yellowish brown.
Help on Pleochroism (y): Pleochroism (y): greenish yellow.
Help on Pleochroism (z): Pleochroism (z): greenish yellow.
 

Calculated Properties of Marthozite

Help on Electron Density: Electron Density:

relectron=3.85 gm/cc
note: rMarthozite =4.44 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01328
Boson Index = 0.98672
Help on Photoelectric: Photoelectric:

PEMarthozite =1,445.94 barns/electron
U=PEMarthozite x relectron=5,564.74 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 4,046,969.06 (Gamma Ray American Petroleum Institute Units)

Marthozite 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) 7.52 ± 1.88 grams of pure Marthozite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 751.59 ±187.90 grams of pure Marthozite .

Estimated Radioactivity from Marthozite - 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 / 7.55 cm 98,047,698 2.65E-03 4,046,969.06 1,330.51
100 gm / 3.50 cm 9,804,770 2.65E-04 404,696.91 133.05
10 gm / 1.63 cm 980,477 2.65E-05 40,469.69 13.31
1 gm / 7.55 mm 98,048 2.65E-06 4,046.97 1.33
0.1 gm / 3.50 mm 9,805 2.65E-07 404.70 0.13
0.01 gm / 1.63 mm 980 2.65E-08 40.47 0.01
0.001 gm / 0.75 mm 98 2.65E-09 4.05 0.00

Weight of pure Marthozite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.44 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
 

Marthozite Classification

Help on  Dana Class: Dana Class: 34.7.4.1 (34)Selenites - Tellurites - Sulfites
  (34.7)Dana Type
  (34.7.4)Dana Group
 
34.7.4.1 Marthozite Cu[(UO2)3(SeO3)2O2]·8(H2O) Pbn21 mm2
Help on  Strunz Class: Strunz Class: IV/K.11-20 IV - Oxides
  IV/K - Uranyl-Selenides with [UO2]2+ - [SeO3]2- groups
  IV/K.11 - Derriksite - Demesmaekerite series
 
IV/K.11-10 Derriksite Cu4(UO2)(SeO3)2(OH)6 Pn21m mm2
 
IV/K.11-20 Marthozite Cu[(UO2)3(SeO3)2O2]·8(H2O) Pbn21 mm2
 
IV/K.11-25 Haynesite (UO2)3(SeO3)2(OH)2·5(H2O) Pnc2,Pncm Ortho
 
IV/K.11-26 Larisaite! Na(H3O)(UO2)3(SeO3)2O2·4(H2O) Pm 2
 
IV/K.11-28 Piretite! Ca(UO2)3(SeO3)2(OH)4-4(H2O) P mn21,Pmnm Ortho
 
IV/K.11-30 Guilleminite Ba(UO2)3(SeO3)2O2·3(H2O) P 21nm mm2
 
IV/K.11-40 Demesmaekerite Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O) P1 1
 

Other Marthozite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(AmMin, Vol 87, p 358) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Marthozite :
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 11 - Uranium Minerals 12 -École des Mines de Paris

Search for Marthozite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Marthozite :
AA Mineral Specimens
B and L Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Marthozite Mineral Data :

Ask about Marthozite 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 Marthozite Specimen Label here :

Marthozite

Cu[(UO2)3(SeO3)2O2]·8(H2O)
Dana No: 34.7.4.1 Strunz No: IV/K.11-20
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links