Yoshiokaite Mineral Data + Say YOSHIOKAITE

General Yoshiokaite Information

Help on Chemical  Formula: Chemical Formula: (Ca8-(x/2)[ ](x/2)Al16-xSixO32)
Help on Composition: Composition: Molecular Weight = 1,245.37 gm
   Calcium   24.14 %  Ca   33.77 % CaO
   Aluminum  32.50 %  Al   61.40 % Al2O3
   Silicon    2.26 %  Si    4.82 % SiO2
   Oxygen    41.11 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca7.5Al15SiO32
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 69380
  IMA1989-043
  PDF 46-1336
 

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Yoshiokaite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.82956
Help on Cell Dimensions: Cell Dimensions: a = 9.939, c = 8.245, Z = 1; V = 705.35 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: P 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.57(1), 2.979(0.91), 3.718(0.79),
Click Here for Large Yoshiokaite Structure Window Crystal Structure:

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Steele I M , Pluth J J , American Mineralogist , 75 (1990) p.1186-1191, Crystal structure of synthetic yoshiokaite, a stuffed derivative of the, tridymite structure

 

Physical Properties of Yoshiokaite

Help on Cleavage: Cleavage: [???] Indistinct
Help on Color: Color: White, Colorless.
Help on Density: Density: 2.76 - 2.9, Average = 2.83
Help on Diaphaniety: Diaphaniety: Translucent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Yoshiokaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.019 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2048,KPDmeas= 0.212,KC= 0.2081
Help on Optical Data: Optical Data: Uniaxial (+), w=1.56-1.58, e=1.62-1.64, bire=0.0600.
 

Calculated Properties of Yoshiokaite

Help on Electron Density: Electron Density:

relectron=2.89 gm/cc
note: rYoshiokaite =2.93 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00157
Boson Index = 0.99843
Help on Photoelectric: Photoelectric:

PEYoshiokaite = 4.02 barns/electron
U=PEYoshiokaite x relectron= 11.62 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yoshiokaite is Not Radioactive

 

Yoshiokaite Classification

Help on  Dana Class: Dana Class: 76.2.1.6 (76)Tectosilicate Al-Si Framework
  (76.2)Feldspathoids and related species
  (76.2.1)Nepheline group
 
76.2.1.1 Kalsilite KAlSiO4 P 31c 3m
 
76.2.1.2 Nepheline (Na,K)AlSiO4 P 63 6
 
76.2.1.3 Trikalsilite (K,Na)AlSiO4 P 63 6
 
76.2.1.4 Panunzite (K,Na)AlSiO4 P 63 6
 
76.2.1.5 Kaliophilite KAlSiO4 P 6322 6 2 2
 
76.2.1.6 Yoshiokaite (Ca8-(x/2)[](x/2)Al16-xSixO32) P 3 3
 
76.2.1.7 Megakalsilite! KAlSiO4 P 63 6
Help on  Strunz Class: Strunz Class: VIII/J.02-60 VIII - Silicates
  VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders
  VIII/J.02 - Nepheline - Yoshiokaite series
 
VIII/J.02-10 Nepheline (Na,K)AlSiO4 P 63 6
 
VIII/J.02-20 Kalsilite KAlSiO4 P 31c 3m
 
VIII/J.02-25 Megakalsilite! KAlSiO4 P 63 6
 
VIII/J.02-30 Trikalsilite (K,Na)AlSiO4 P 63 6
 
VIII/J.02-40 Panunzite (K,Na)AlSiO4 P 63 6
 
VIII/J.02-50 Kaliophilite KAlSiO4 P 6322 6 2 2
 
VIII/J.02-60 Yoshiokaite (Ca8-(x/2)[](x/2)Al16-xSixO32) P 3 3
 
VIII/J.02-70 Malinkoite! NaBSiO4 P 63 6
 

Other Yoshiokaite Information

Help on References: References: PHYS. PROP.(Am.Min.,Vol.75,p676-686,1990) OPTIC PROP.(Am.Min.,Vol.75,p676-686,1990)
Help on See Also: See Also: Links to other databases for Yoshiokaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Print or Cut-and-Paste your Yoshiokaite Specimen Label here :

Yoshiokaite

(Ca8-(x/2)[ ](x/2)Al16-xSixO32)
Dana No: 76.2.1.6 Strunz No: VIII/J.02-60
Locality:

 

Notes:

 

 
   
 
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