IMA2004-001 Mineral Data

IMA2004-001 Mineral Data

General IMA2004-001 Information

Chemical Formula:

[(REE+Y),U,Th,Ca,Fe](Nb,Ta,Ti)O4

Composition:

Molecular Weight = 339.93 gm

Calcium 1.18 % Ca 1.65 % CaO

La,Ce,Pr,Nd,Sm, 8.47 % RE 9.88 % REE₂O₃

Thorium 6.83 % Th 7.77 % ThO₂

Ytterbium 15.27 % Yb 17.39 % Yb₂O₃

Uranium 14.00 % U 15.89 % UO₂

Tantalum 15.97 % Ta 19.50 % Ta₂O₅

Titanium 1.41 % Ti 2.35 % TiO₂

Niobium 16.40 % Nb 23.46 % Nb₂O₅

Iron 1.64 % Fe 2.35 % Fe₂O₃

Oxygen 18.83 % O

______ ______

100.00 % 100.24 % = TOTAL OXIDE

Empirical Formula:

Yb_0.3REE_0.2U_0.2Th_0.1Ca_0.1Fe³⁺_0.1Nb_0.6Ta_0.3Ti_0.1O₄

Environment:

Yb-dominant analogue of samarskite

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Little Patsy pegmatite, Jefferson Co., Colorado, USA Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-001 Crystallography

Axial Ratios:

a:b:c =0.5734:1:0.5244

Cell Dimensions:

a = 5.687, b = 9.918, c = 5.201, Z = 2; beta = 93.18° V = 292.90 Den(Calc)= 3.85

Crystal System:

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

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

By Intensity(I/I_o): 2.981(1), 3.086(0.25), 3.664(0.21),1.587(0.2), 1.865(0.2), 1.769(0.15), 1.746(0.12), 1.895(0.12),

Optical Properties of IMA2004-001

Optical Data:

NCalc= 1.66 - from Gladstone-Dale relationship (KC = 0.1717) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-001

Electron Density:

r_electron=3.30 gm/cc
note: r_IMA2004-001=3.85 gm/cc.

Fermion Index

Fermion Index = 0.06564
Boson Index = 0.93436

Photoelectric:

PE_IMA2004-001= 970.80 barns/electron
U=PE_IMA2004-001 x r_electron=3,208.42 barns/cc.

Radioactivity:

GRapi = 1,149,752.54 (Gamma Ray American Petroleum Institute Units)

IMA2004-001 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) 26.45 ± 6.61 grams of pure IMA2004-001 .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 2645.5 ±661.37 grams of pure IMA2004-001 .

**Estimated Radioactivity from IMA2004-001** - 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 / 7.92 cm	28,127,129	7.60E-04	1,149,752.54	378.00
100 gm / 3.67 cm	2,812,713	7.60E-05	114,975.25	37.80
10 gm / 1.71 cm	281,271	7.60E-06	11,497.53	3.78
1 gm / 7.92 mm	28,127	7.60E-07	1,149.75	0.38
0.1 gm / 3.67 mm	2,813	7.60E-08	114.98	0.04
0.01 gm / 1.71 mm	281	7.60E-09	11.50	0.00
0.001 gm / 0.79 mm	28	7.60E-10	1.15	0.00

Weight of pure IMA2004-001 in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.85 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

IMA2004-001 Classification

Dana Class:

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

(8.1)where A BO4

(8.1.11)Dana Group

8.1.11.1 Samarskite-(Y) (Y,Fe,U)(Nb,Ta)5O4 P bcn 2/m 2/m 2/m

8.1.11.2 IMA2004-001 ! [(REEY),U,Th,Ca,Fe](Nb,Ta,Ti)O4 P 2/c 2/m

Strunz Class:

IV/X.00-00 IV - Oxides

IV/X - Unclassified Strunz Oxides

IV/X.00 - Oxide

Other IMA2004-001 Information

See Also:

Links to other databases for IMA2004-001 :
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)

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Print or Cut-and-Paste your IMA2004-001 Specimen Label here :

IMA2004-001

[(REE+Y),U,Th,Ca,Fe](Nb,Ta,Ti)O4
Dana No: 8.1.11.2 Strunz No: IV/X.00-00
Locality:

Notes: