Cleusonite Mineral Data

Cleusonite Mineral Data

General Cleusonite Information

Chemical Formula:

Pb(U++++,U++++++)(Ti,Fe2+,Fe3+)20(O,OH)38

Composition:

Molecular Weight = 2,076.56 gm

Uranium 11.46 % U 9.75 % UO₂ / 3.44 % UO₃

Titanium 27.67 % Ti 46.16 % TiO₂

Iron 21.52 % Fe 20.76 % FeO / 7.69 % Fe₂O₃

Hydrogen 0.10 % H 0.87 % H₂O

Lead 9.98 % Pb 10.75 % PbO

Oxygen 29.28 % O

______ ______

100.00 % 99.42 % = TOTAL OXIDE

Empirical Formula:

PbU_0.75U_0.25Ti₁₂Fe²⁺₆Fe³⁺₂O₃₆(OH)₂

Environment:

(crichtonite group)

IMA Status:

Proposed IMA 2001 (Dana # Added)

Locality:

Barrage de Cleuson, Val de Nendaz, Switzerland. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA1998-070

Search for Cleusonite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Cleusonite Crystallography

Axial Ratios:

a:c = 1:2.01626

Cell Dimensions:

a = 10.576, c = 21.324, V = 2,065.58

Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3

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

By Intensity(I/I_o): 2.891(0.6), 3.41(0.6), 2.248(0.35),2.993(0.3), 3.06(0.3), 5.16(0.3), 6.86(0.3), 3.23(0.25),

Physical Properties of Cleusonite

Color:

Black.

Diaphaniety:

Opaque

Luster:

Sub Metallic

Optical Properties of Cleusonite

RL Color:

Light gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cleusonite in Air**
λ	R	∑ R(λ)
460 nm	18.40
540 nm	17.50
580 nm	17.40
640 nm	17.40

**Calculated Relative Intensity Colors of Cleusonite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	510%
R

Calculated Properties of Cleusonite

Fermion Index

Fermion Index = 0.06335
Boson Index = 0.93665

Photoelectric:

PE_Cleusonite= 462.30 barns/electron
U=PE_Cleusonite x r_electron= . barns/cc.

Radioactivity:

GRapi = 895,863.52 (Gamma Ray American Petroleum Institute Units)

Cleusonite 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) 33.95 ± 8.49 grams of pure Cleusonite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 3395.2 ±848.81 grams of pure Cleusonite .

**Estimated Radioactivity from Cleusonite** - 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	20,518,161	5.55E-04	895,863.52	294.53
100 gm	2,051,816	5.55E-05	89,586.35	29.45
10 gm	205,182	5.55E-06	8,958.64	2.95
1 gm	20,518	5.55E-07	895.86	0.29
0.1 gm	2,052	5.55E-08	89.59	0.03
0.01 gm	205	5.55E-09	8.96	0.00
0.001 gm	21	5.55E-10	0.90	0.00

Weight of pure Cleusonite in grams (gm).*
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

Cleusonite Classification

Dana Class:

8.5.1.10 (8)Multiple Oxides with Nb, Ta, and Ti

(8.5)Dana Type

(8.5.1)Crichtonite group (ABC18 T2 O38)

8.5.1.1 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

8.5.1.2 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

8.5.1.3 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

8.5.1.4 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

8.5.1.5 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

8.5.1.6 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

8.5.1.7 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

8.5.1.8 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

8.5.1.9 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

8.5.1.10 Cleusonite ! Pb(U,U)(Ti,Fe2,Fe3)20(O,OH)38 R 3 3

8.5.1.11 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Strunz Class:

IV/X.00-00 IV - Oxides

IV/X - Unclassified Strunz Oxides

IV/X.00 - Crichtonite Group

Other Cleusonite Information

See Also:

Links to other databases for Cleusonite :
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 - Uranium Minerals

Search for Cleusonite using:

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

Visit our Advertisers for Cleusonite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
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
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Cleusonite Mineral Data :

Ask about Cleusonite 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 Cleusonite Specimen Label here :

Cleusonite

Pb(U++++,U++++++)(Ti,Fe2+,Fe3+)20(O,OH)38
Dana No: 8.5.1.10 Strunz No: IV/X.00-00
Locality:

Notes: