Umbozerite Mineral Data (original) (raw)

General Umbozerite Information

Help on Chemical Formula: Chemical Formula:

Na3Sr4ThSi8(O,OH)24

Help on Composition: Composition:

Molecular Weight = 1,262.17 gm

Sodium 5.46 % Na 7.37 % Na2O

Strontium 27.77 % Sr 32.84 % SrO

Thorium 18.38 % Th 20.92 % ThO2

Silicon 17.80 % Si 38.08 % SiO2

Hydrogen 0.16 % H 1.43 % H2O

Oxygen 30.42 % O

______ ______

100.00 % 100.63 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na3Sr4ThSi8O22(OH)2

Help on Environment: Environment:

In ussingite veinlets cutting alkalic rocks.

Help on IMA Status: IMA Status:

Approved IMA 1974

Help on Locality: Locality:

Umbozero (Lake Umba), Kola Peninsula, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality.

Help on Name Pronunciation: Name Pronunciation:

Umbozerite + Pronunciation Say UMBOZERITE

Umbozerite Image

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

Umbozerite Crystallography

Help on Crystal System: Crystal System:

Amorphous- No Crystals

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.29(1), 1.701(0.8), 3.38(0.6),

Physical Properties of Umbozerite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Bottle green, Greenish brown.

Help on Density: Density:

3.6

Help on Fracture: Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Help on Habit: Habit:

Metamict - Mineral originally crystalline, now amorphous due to radiation damage.

Help on Habit: Habit:

Pseudo Tetragonal - Crystals show a tetragonal shape.

Help on Hardness: Hardness:

5 - Apatite

Help on Luster: Luster:

Vitreous (Glassy)

Optical Properties of Umbozerite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1778,KC= 0.1806
Ncalc = 1.65

Help on Optical Data: Optical Data:

Isotropic, n=1.64.

Calculated Properties of Umbozerite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Umbozerite =3.60 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEUmbozerite = 452.73 barns/electron
U=PEUmbozerite x relectron=1,500.48 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 361,065.87 (Gamma Ray American Petroleum Institute Units)
Concentration of Umbozerite per GRapi unit = 2.77 (PPM)

Umbozerite 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) 84.24 ± 21.06 grams of pure Umbozerite .
Estimated Maximum U.S. Postal Shipping Size(10 mRem/hr limit, Unshielded 100 cm box) 8424.1 ±2106.0 grams of pure Umbozerite .

Estimated Radioactivity from Umbozerite - strong

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 8.10 cm 8,236,040 2.23E-04 361,065.87 118.71
100 gm / 3.76 cm 823,604 2.23E-05 36,106.59 11.87
10 gm / 1.74 cm 82,360 2.23E-06 3,610.66 1.19
1 gm / 8.10 mm 8,236 2.23E-07 361.07 0.12
0.1 gm / 3.76 mm 824 2.23E-08 36.11 0.01
0.01 gm / 1.74 mm 82 2.23E-09 3.61 0.00
0.001 gm / 0.81 mm 8 2.23E-10 0.36 0.00

Weight of pure Umbozerite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.60 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

Umbozerite Classification

Help on Dana Class: Dana Class:

78.07.17.01 (78)Unclassified silicates

(78.07)wholly unclassified silicates

(78.07.17)Dana Group

78.07.17.01 Umbozerite Na3Sr4ThSi8(O,OH)24 None

Help on Strunz Class: Strunz Class:

09.HG.15 09 - SILICATES (Germanates)

09.H - Unclassified Silicates

09.HG -With REE, Th

09.HG.15 Umbozerite Na3Sr4ThSi8(O,OH)24 None

Other Umbozerite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Umbozerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals

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Ask about Umbozerite here :
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Print or Cut-and-Paste your Umbozerite Specimen Label here :

Umbozerite

Na3Sr4ThSi8(O,OH)24
Dana No: 78.07.17.01 Strunz No: 09.HG.15
Locality:

Notes: