Baylissite Mineral Data

Baylissite Mineral Data
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General Baylissite Information

Help on Chemical Formula: Chemical Formula: K2Mg(CO3)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 294.58 gm
   Potassium  26.55 %  K    31.98 % K2O
   Magnesium   8.25 %  Mg   13.68 % MgO
   Hydrogen    2.74 %  H    24.46 % H2O
   Carbon      8.15 %  C    29.88 % CO2
   Oxygen     54.31 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Mg(CO3)2•4(H2O)
Help on Environment: Environment: Secondary mineral in fractures in aplite granite and granodiorite.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Gerstenegg-Sommerloch cable tunnel, north of the Grimsel Pass, Bern, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Noel Stanley Bayliss, Professor of Chemistry, University of Western Australia, Nedlands, Western Australia, who characterized the synthetic compound.
Help on Name Pronunciation: Name Pronunciation: Baylissite + Pronunciation Say BAYLISSITE
Help on Synonym: Synonym: ICSD 200006
  PDF 29-1017
 

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Baylissite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.9823:1:1.0993
Help on Cell Dimensions: Cell Dimensions: a = 12.37, b = 6.24, c = 6.86, Z = 2; beta = 114.5° V = 481.84 Den(Calc)= 2.03
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.01(1), 2.98(0.9), 6.31(0.8),
Click Here for Large Baylissite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
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Bucat R B , Patrick J M , White A H , Willis A C , Australian Journal of Chemistry , 30 (1977) p.1379-1382, Crystal structure of baylissite, K2Mg(CO3)2,4H2O

 

Physical Properties of Baylissite

Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Streak: Streak: white
 

Optical Properties of Baylissite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2438,KC= 0.2363
Ncalc = 1.48
Help on Optical Data: Optical Data: Biaxial (-), a=1.465, b=1.485, g=1.535, bire=0.0700, 2V(Calc)=68, 2V(Meas)=64.
 

Calculated Properties of Baylissite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Baylissite =2.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0094443671
Boson Index = 0.9905556329
Help on Photoelectric: Photoelectric: PEBaylissite = 2.95 barns/electron
U=PEBaylissite x relectron= 6.09 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 390.05 (Gamma Ray American Petroleum Institute Units)
Concentration of Baylissite per GRapi unit = 0.26 (%)

Estimated Radioactivity from Baylissite - barely detectable

 

Baylissite Classification
Help on Dana Class: Dana Class: 15.02.04.01 (15)Hydrated Carbonates
  (15.02)where A+m B++n (XO3)p · x(H2O), (m+n):p > 1:1
  (15.02.04)Dana Group
 
15.02.04.01 Baylissite K2Mg(CO3)2•4(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 05.CB.45 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CB -With large cations (alkali and alkali-earth carbonates)
 
05.CB.45 Baylissite K2Mg(CO3)2•4(H2O) P 21/a 2/m
 

Other Baylissite Information
Help on References: References: NAME( AntBidBlaNic3) 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 Baylissite :
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 - WWW-MINCRYST

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

Baylissite

K2Mg(CO3)2•4(H2O)
Dana No: 15.02.04.01 Strunz No: 05.CB.45
Locality:

 

Notes: