Mineralogy Database

Wegscheiderite Mineral Data

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General Wegscheiderite Information

Help on Chemical  Formula: Chemical Formula: Na5(CO3)(HCO3)3
Help on Composition: Composition: Molecular Weight = 358.01 gm
   Sodium    32.11 %  Na   43.28 % Na2O
   Hydrogen   0.84 %  H     7.55 % H2O
   Carbon    13.42 %  C    49.17 % CO2
   Oxygen    53.63 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na5(CO3)(HCO3)3
Help on Environment: Environment: Replacement of trona in a lacustrine deposit.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Perkins Well No. 1, the Perkins Well No. 2, in the Green River Formation about 10 km west, and as large crystals in the Grierson Well No. 1, about 20 km northwest, Sweetwater Co., Utah Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Rudolf Franz Johann Wegscheider (1859-1935), Austrian chemist, who first synthesized the compound.
Help on Name Pronunciation: Name Pronunciation: Wegscheiderite + Pronunciation Say WEGSCHEIDERITE
Help on Synonym: Synonym: ICSD 68711
  PDF 15-653

Wegscheiderite Image

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Comments: Greasy pale pink translucent platy crystalline wegscheiderite in syenite rock.
Location: Mount Alluaiv, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wegscheiderite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6452:1:0.2227
Help on Cell Dimensions: Cell Dimensions: a = 10.04, b = 15.56, c = 3.466, Z = 2; alpha = 91.917°, beta = 95.817°, gamma = 108.667° V = 510.06 Den(Calc)= 2.33
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.95(1), 2.64(0.6), 3.68(0.6),

Physical Properties of Wegscheiderite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless.
Help on Density: Density: 2.34
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Wegscheiderite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2108,KPDmeas= 0.2108,KC= 0.2116
Ncalc = 1.5
Help on Optical Data: Optical Data: Biaxial (-), a=1.433, b=1.519, g=1.528, bire=0.0950, 2V(Calc)=34, 2V(Meas)=32.4.

Calculated Properties of Wegscheiderite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Wegscheiderite =2.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0017348539
Boson Index = 0.9982651461
Help on Photoelectric: Photoelectric: PEWegscheiderite = 0.70 barns/electron
U=PEWegscheiderite x rElectron Density= 1.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wegscheiderite is Not Radioactive

Wegscheiderite Classification

Help on  Dana Class: Dana Class: (13)Acid Carbonates
  (13.01)with miscellaneous formulae
  (13.01.06)Dana Group Wegscheiderite Na5(CO3)(HCO3)3 P1 1
Help on  Strunz Class: Strunz Class: 05.AA.30 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AA -Alkali Carbonates
05.AA.30 Wegscheiderite Na5(CO3)(HCO3)3 P1 1

Other Wegscheiderite 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 Wegscheiderite :
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.AA.30





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