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Paralstonite Mineral Data

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General Paralstonite Information

Help on Chemical  Formula: Chemical Formula: BaCa(CO3)2
Help on Composition: Composition: Molecular Weight = 297.42 gm
   Barium   46.17 %  Ba   51.55 % BaO
   Calcium  13.48 %  Ca   18.85 % CaO
   Carbon    8.08 %  C    29.59 % CO2
   Oxygen   32.28 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaCa(CO3)2
Help on Environment: Environment: Low-temperature hydrothermal Pb�Zn deposits.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Minerva No. 1 and Annabel Lee mines, Cave-in-Rock, Hardin Co., Illinois, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for near and its morphological and chemical relation with alstonite.
Help on Name Pronunciation: Name Pronunciation: Paralstonite + Pronunciation Say PARALSTONITE
Help on Synonym: Synonym: ICSD 100477
  PDF 33-178

Paralstonite Image

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Comments: Translucent bright white steep pyramidal paralstonite microcrystals on fluorite.
Location: Bethel Level, Minerva #1 Mine, Cave-in-Rock, Hardin County, Illinois, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Paralstonite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.70731
Help on Cell Dimensions: Cell Dimensions: a = 8.692, c = 6.148, Z = 3; V = 402.26 Den(Calc)= 3.68
Help on Crystal System: Crystal System: Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: P 321
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.55(1), 2.51(0.65), 2.048(0.2),

Physical Properties of Paralstonite

Help on Color: Color: Colorless, White.
Help on Density: Density: 3.6
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Paralstonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1629,KPDmeas= 0.1665,KC= 0.168
Ncalc = 1.6 - 1.62
Help on Optical Data: Optical Data: Uniaxial (-), e=1.527, w=1.672, bire=0.1450.

Calculated Properties of Paralstonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.29 gm/cc
note: Specific Gravity of Paralstonite =3.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEParalstonite = 204.28 barns/electron
U=PEParalstonite x rElectron Density= 672.54 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paralstonite is Not Radioactive

Paralstonite Classification

Help on  Dana Class: Dana Class: (14)Anhydrous Carbonates
  (14.02)with Compound Formula A+ B++ (CO3)2
  (14.02.02)Norsethite Group Norsethite BaMg(CO3)2 R 32 3 2 Paralstonite BaCa(CO3)2 P 321 3 2 Olekminskite Sr(Sr,Ca,Ba)(CO3)2 P 321 3 2
Help on  Strunz Class: Strunz Class: 05.AB.40 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AB -Alkali-earth (and other M2+) carbonates
05.AB.40 Olekminskite Sr(Sr,Ca,Ba)(CO3)2 P 321 3 2
05.AB.40 Paralstonite BaCa(CO3)2 P 321 3 2

Other Paralstonite 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 Paralstonite :
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

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Dana No: Strunz No: 05.AB.40





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