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Thorosteenstrupine Mineral Data

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General Thorosteenstrupine Information

Help on Chemical  Formula: Chemical Formula: (Ca,Th,Mn)3Si4O11F•6(H2O)
Help on Composition: Composition: Molecular Weight = 712.88 gm
   Calcium    10.12 %  Ca   14.16 % CaO
   Thorium    29.29 %  Th   33.33 % ThO2
   Manganese   2.31 %  Mn    2.99 % MnO
   Silicon    15.76 %  Si   33.71 % SiO2
   Hydrogen    1.70 %  H    15.16 % H2O
   Oxygen     38.15 %  O
   Fluorine    2.67 %  F     2.67 % F
                -   %   F    -1.12 % -O=F2    
             ______        ______ 
             100.00 %      100.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.8Th0.9Mn2+0.3Si4O11F•6(H2O)
Help on Environment: Environment: Metasomatic veins associated with orthoclase.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Unspecified locality in eastern Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for steenstrupine and the thorium content.
Help on Name Pronunciation: Name Pronunciation: Thorosteenstrupine + Pronunciation Say THOROSTEENSTRUPINE
 

Thorosteenstrupine Crystallography

Help on Crystal System: Crystal System: Amorphous- No Crystals
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.61(1), 3.25(1), 4.08(1),
 

Physical Properties of Thorosteenstrupine

Help on Color: Color: Dark brown, Black, Black brown.
Help on Density: Density: 3.02
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: dark brown
 

Optical Properties of Thorosteenstrupine

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2136,KC= 0.2142
Ncalc = 1.65
Help on Optical Data: Optical Data: Isotropic, n=1.63-1.66.
 

Calculated Properties of Thorosteenstrupine

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.86 gm/cc
note: Specific Gravity of Thorosteenstrupine =3.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0076819759
Boson Index = 0.9923180241
Help on Photoelectric: Photoelectric: PEThorosteenstrupine = 653.40 barns/electron
U=PEThorosteenstrupine x relectron=1,868.42 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 591,738.05 (Gamma Ray American Petroleum Institute Units)
Concentration of Thorosteenstrupine per GRapi unit =1,689.94 (PPB)

Thorosteenstrupine 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) 51.40 ± 12.85 grams of pure Thorosteenstrupine .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 5140.2 ±1285.1 grams of pure Thorosteenstrupine .

Estimated Radioactivity from Thorosteenstrupine - 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 / 8.58 cm 13,123,885 3.55E-04 591,738.05 194.54
100 gm / 3.98 cm 1,312,389 3.55E-05 59,173.81 19.45
10 gm / 1.85 cm 131,239 3.55E-06 5,917.38 1.95
1 gm / 8.58 mm 13,124 3.55E-07 591.74 0.19
0.1 gm / 3.98 mm 1,312 3.55E-08 59.17 0.02
0.01 gm / 1.85 mm 131 3.55E-09 5.92 0.00
0.001 gm / 0.86 mm 13 3.55E-10 0.59 0.00

Weight of pure Thorosteenstrupine in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.02 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
 

Thorosteenstrupine Classification

Help on  Dana Class: Dana Class: 61.04.02.02 (61)Cyclosilicate Six-Membered Rings
  (61.04)with other anions
  (61.04.02)Steenstrupine group
 
61.04.02.01 Steenstrupine-(Ce) Na14Ce6MnMnFe2(Zr,Th)(Si6O18)2(PO4)7•3(H2O) R 3m 3 2/m
 
61.04.02.02 Thorosteenstrupine (Ca,Th,Mn)3Si4O11F•6(H2O) None
Help on  Strunz Class: Strunz Class: 09.CK.20 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CK -[Si6O18]12- 6-membered single rings, with insular complex anions
 
09.CK.20 Thorosteenstrupine (Ca,Th,Mn)3Si4O11F•6(H2O) None
 
09.CK.20 Steenstrupine-(Ce) Na14Ce6MnMnFe2(Zr,Th)(Si6O18)2(PO4)7•3(H2O) R 3m 3 2/m
 

Other Thorosteenstrupine 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 Thorosteenstrupine :
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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Print or Cut-and-Paste your Thorosteenstrupine Specimen Label here :

Thorosteenstrupine

(Ca,Th,Mn)3Si4O11F•6(H2O)
Dana No: 61.04.02.02 Strunz No: 09.CK.20
Locality:

 

Notes:

 

 
   
 


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