Sazhinite-(La) Mineral Data

Sazhinite-(La) Mineral Data
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General Sazhinite-(La) Information

Help on Chemical Formula: Chemical Formula: Na3La[Si6O15]•2(H2O)
Help on Composition: Composition: Molecular Weight = 652.93 gm
   Potassium       0.12 %  K     0.14 % K2O
   Sodium         10.11 %  Na   13.62 % Na2O
   Strontium       0.13 %  Sr    0.16 % SrO
   Lithium         0.01 %  Li    0.02 % Li2O
   Calcium         0.49 %  Ca    0.69 % CaO
   Lanthanum       8.72 %  La   10.23 % La2O3
   Cerium          7.51 %  Ce    8.80 % Ce2O3
   Praeseodymium   0.43 %  Pr    0.51 % Pr2O3
   Yttrium         0.14 %  Y     0.17 % Y2O3
   Thorium         3.20 %  Th    3.64 % ThO2
   Zirconium       0.14 %  Zr    0.19 % ZrO2
   Uranium         0.36 %  U     0.41 % UO2
   Silicon        25.25 %  Si   54.02 % SiO2
   Boron           0.02 %  B     0.05 % B2O3
   Hydrogen        0.62 %  H     5.52 % H2O
   Sulfur          0.29 %  S     0.74 % SO3
   Neodymium       0.88 %  Nd    1.03 % Nd2O3
   Oxygen         41.17 %  O
   Fluorine        0.41 %  F     0.41 % F
                    -   %   F    -0.17 % -O=F2    
                 ______        ______ 
                 100.00 %      100.17 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.87K0.02Sr0.01La0.41Ce0.35Pr0.02Nd0.04Th0.09U0.01Y0.01Zr0.01Ca0.08Li0.01Si5.87S0.06 B0.01O14.8F0.14·2(H2O)
Help on Environment: Environment: Occurs in vesicles within the phonolite, together with other species crystallized from late-stage hydrothermal fluids. La-dominant analogue of sazhinite.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Aris phonolite intrusion, Windhoek, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the La-dominant analogue of sazhinite.
Help on Name Pronunciation: Name Pronunciation: Sazhinite-(La) + Pronunciation Say SAZHINITE-(LA)
Help on Synonym: Synonym: IMA2002-042a
 

Sazhinite-(La) Image

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Sazhinite-(La)

Comments: White, fine-grained crystalling sazhinite-(La) lining vugs in matrix.
Location: Aris Phonolite, Windhoek, Namibia. Scale: Specimen Size 19x13x10 mm.
© Sergey Vasiliev / Systematic Mineralogy

Sazhinite-(La) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4779:1:0.4617
Help on Cell Dimensions: Cell Dimensions: a = 7.415, b = 15.515, c = 7.164, Z = 2; V = 824.17 Den(Calc)= 2.63
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmm2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.411(1), 3.252(0.83), 5.26(0.68),5.36(0.6), 7.42(0.59), 6.5(0.48), 3.226(0.45), 3.345(0.45),
Click Here for Large Sazhinite-(La) Structure Window Crystal Structure:

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Camara F , Ottolini L , Devouard B , Garvie L A J , Hawthorne F C , Mineralogical Magazine , 70 (2006) p.405-418, Sazhinite-(La), Na3LaSi6O15(H2O)2, a new mineral from the, Aris phonolite, Nambia: description and crystal structure, Locality: Aris phonolite, Nambia

 

Physical Properties of Sazhinite-(La)

Help on Cleavage: Cleavage: {010} Good, {001} Good
Help on Color: Color: Creamy white.
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Sazhinite-(La)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2023,KC= 0.1977
Ncalc = 1.52
Help on Optical Data: Optical Data: Biaxial (+), a=1.524, b=1.528, g=1.544, bire=0.0200
 

Calculated Properties of Sazhinite-(La)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Sazhinite-(La) =2.63 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESazhinite-(La) = 162.48 barns/electron
U=PESazhinite-(La) x relectron= 410.83 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 95,476.10 (Gamma Ray American Petroleum Institute Units)
Concentration of Sazhinite-(La) per GRapi unit = 10.47 (PPM)

Sazhinite-(La) 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) 318.58 ± 79.64 grams of pure Sazhinite-(La) .

Estimated Radioactivity from Sazhinite-(La) - weak
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Becquerels
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 8.99 cm 2,085,468 5.64E-05 95,476.10 31.39
100 gm / 4.17 cm 208,547 5.64E-06 9,547.61 3.14
10 gm / 1.94 cm 20,855 5.64E-07 954.76 0.31
1 gm / 8.99 mm 2,085 5.64E-08 95.48 0.03
0.1 gm / 4.17 mm 209 5.64E-09 9.55 0.00
0.01 gm / 1.94 mm 21 5.64E-10 0.95 0.00
0.001 gm / 0.90 mm 2 5.64E-11 0.10 0.00

Weight of pure Sazhinite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.63 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
 

Sazhinite-(La) Classification
Help on Dana Class: Dana Class: 72.02.01.04 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.02)with 4-, 6-, and 8-membered rings
  (72.02.01)Dalylite group
 
72.02.01.01 Dalyite K2ZrSi6O15 P1 1
 
72.02.01.02 Davanite K2TiSi6O15 P1 1
 
72.02.01.03 Sazhinite-(Ce) Na2Ce[Si6O14(OH)]•n(H2O),(n>=1.5) Pmm2 mm2
 
72.02.01.04 Sazhinite-(La)! Na3La[Si6O15]•2(H2O) Pmm2 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 09.EA.30 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
 
09.EA.30 Sazhinite-(Ce) Na2Ce[Si6O14(OH)]•n(H2O),(n>=1.5) Pmm2 mm2
 
09.EA.30 Sazhinite-(La)! Na3La[Si6O15]•2(H2O) Pmm2 2/m 2/m 2/m
 

Other Sazhinite-(La) Information
Help on References: References: NAME( MinMag v70:405) PHYS. PROP.(MinMag v70:405) OPTIC PROP.(MinMag v70:405)
Help on See Also: See Also: Links to other databases for Sazhinite-(La) :
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

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Print or Cut-and-Paste your Sazhinite-(La) Specimen Label here :

Sazhinite-(La)

Na3La[Si6O15]•2(H2O)
Dana No: 72.02.01.04 Strunz No: 09.EA.30
Locality:

 

Notes: