Cleusonite Mineral Data

General Cleusonite Information

Chemical Formula:

Pb(U++++,U++++++)(Ti,Fe++,Fe+++)20(O,OH)38

Composition:

Molecular Weight = 2,080.74 gm

Strontium 0.51 % Sr 0.60 % SrO

Uranium 12.47 % U 10.25 % UO₂ / 4.12 % UO₃

Titanium 27.15 % Ti 45.30 % TiO₂

Manganese 0.21 % Mn 0.27 % MnO

Aluminum 0.09 % Al 0.17 % Al₂O₃

Vanadium 0.47 % V 0.83 % V₂O₅

Zinc 0.28 % Zn 0.35 % ZnO

Iron 20.61 % Fe 18.47 % FeO / 8.94 % Fe₂O₃

Hydrogen 0.13 % H 1.14 % H₂O

Lead 8.86 % Pb 9.55 % PbO

Oxygen 29.22 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb_0.89Sr_0.12U_0.79U_0.3Fe²⁺_1.91Zn_0.09Ti_11.8Fe²⁺_3.44Fe³⁺_2.33V⁵⁺_0.19Mn²⁺_0.08 Al_0.07O_35.37(OH)_2.63

Environment:

Oligocene-Miocene alpine cleft veins. (crichtonite group).

IMA Status:

Approved 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

Cleusonite Image

Images:

Cleusonite

Comments: Black submetallic ceusonite crystals in matrix.
Location: Kaisererbruch, Rauris, Salzburg, Austria. Scale: Specimen Size 3x4.5 cm.
© Diederik Visser

Cleusonite Crystallography

Axial Ratios:

a:c = 1:2.01626

Cell Dimensions:

a = 10.576, c = 21.324, Z = 3; V = 2,065.58 Den(Calc)= 5.02

Crystal System:

Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3

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

By Intensity(I/I_o): 2.82(1)(303 ), 2.45(0.38)(312 ), 1.485(0.33)(342 ),2.137(0.21)(226 ), 3.31(0.19)(122 ), 2.957(0.16)(116 ), 2.081(0.15)(10.1.0 ),

Physical Properties of Cleusonite

Cleavage:

None

Color:

Black.

Density:

4.74

Diaphaneity:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Sub Metallic

Streak:

black

Optical Properties of Cleusonite

Optical Data:

NCalc= 2.39 - from Gladstone-Dale relationship (KC = 0.2777) where Ncalc=Dcalc*KC+1
NCalc= 2.32 - from Gladstone-Dale relationship (KC = 0.2777) where Ncalc=Dmeas*KC+1

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

Electron Density:

Bulk Density (Electron Density)=4.60 gm/cc
note: Specific Gravity of Cleusonite =5.02 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Cleusonite= 469.14 barns/electron
U=PE_Cleusonite x r_electron=2,158.92 barns/cc.

Radioactivity:

GRapi = 974,319.01 (Gamma Ray American Petroleum Institute Units)
Concentration of Cleusonite per GRapi unit =1,026.36 (PPB)

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) 31.22 ± 7.80 grams of pure Cleusonite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 3121.8 ±780.46 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 / 7.25 cm	22,319,871	6.03E-04	974,319.01	320.32
100 gm / 3.36 cm	2,231,987	6.03E-05	97,431.90	32.03
10 gm / 1.56 cm	223,199	6.03E-06	9,743.19	3.20
1 gm / 7.25 mm	22,320	6.03E-07	974.32	0.32
0.1 gm / 3.36 mm	2,232	6.03E-08	97.43	0.03
0.01 gm / 1.56 mm	223	6.03E-09	9.74	0.00
0.001 gm / 0.72 mm	22	6.03E-10	0.97	0.00

Weight of pure Cleusonite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.02 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

Cleusonite Classification

Dana Class:

08.05.01.10 (08)Multiple Oxides with Nb, Ta, and Ti

(08.05)Dana Type

(08.05.01)Crichtonite group (ABC18 T2 O38)

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

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

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

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

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

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

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

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

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

08.05.01.10 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

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

Strunz Class:

04.CC.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.40 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

04.CC.40 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

04.CC.40 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

04.CC.40 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

04.CC.40 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Other Cleusonite Information

References:

NAME( AmMin, v91, p1202) PHYS. PROP.(AmMin, v91, p1202) OPTIC PROP.(AmMin, v91, p1202)

See Also:

Links to other databases for Cleusonite :
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
11 - Uranium Minerals

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Cleusonite

Pb(U++++,U++++++)(Ti,Fe++,Fe+++)20(O,OH)38
Dana No: 08.05.01.10 Strunz No: 04.CC.40
Locality:

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