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Revdite Mineral Data

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General Revdite Information

Help on Chemical  Formula: Chemical Formula: Na2Si2O5•5(H2O)
Help on Composition: Composition: Molecular Weight = 272.22 gm
   Sodium    16.89 %  Na   22.77 % Na2O
   Silicon   20.63 %  Si   44.14 % SiO2
   Hydrogen   3.70 %  H    33.09 % H2O
   Oxygen    58.77 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2(Si2O5)•5(H2O)
Help on Environment: Environment: In ussingite veinlets cutting nepheline syenites in a differentiated alkalic massif.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: From Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Revda, a town near Mt. Karnasurt, on which the mineral occurs.
Help on Name Pronunciation: Name Pronunciation: Revdite Say REVDITE
Help on Synonym: Synonym: ICSD 39603
  PDF 33-1279

Revdite Image

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Comments: Transparent crystal fragment of revdite photographed through a capsule.
Location: Mt. Alluaiv, Lovozero, Kola, Russia. Scale: Not Given.
© Diederik Visser

Revdite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5398:1:0.6926
Help on Cell Dimensions: Cell Dimensions: a = 5.383, b = 9.972, c = 6.907, Z = 2; beta = 96.78° V = 368.17 Den(Calc)= 2.46
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.46(1), 13.37(0.76), 3.34(0.71),

Physical Properties of Revdite

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 1.94
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Revdite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.211 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1953,KPDmeas= 0.2476,KC= 0.2476
Ncalc = 1.48 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.469, b=1.482, g=1.49, bire=0.0210, 2V(Calc)=74, 2V(Meas)=75.

Calculated Properties of Revdite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.00 gm/cc
note: Specific Gravity of Revdite =1.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0099237957
Boson Index = 0.9900762043
Help on Photoelectric: Photoelectric: PERevdite = 1.14 barns/electron
U=PERevdite x rElectron Density= 2.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Revdite is Not Radioactive

Revdite Classification

Help on  Dana Class: Dana Class: (74)Phyllosilicate Modulated Layers
  (74.03)with joined strips
  (74.03.06)Dana Group Revdite Na2Si2O5•5(H2O) C 2 2
Help on  Strunz Class: Strunz Class: 09.DM.30 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DM -Inosilicates with 6-periodic single chains
09.DM.30 Revdite Na2Si2O5•5(H2O) C 2 2

Other Revdite Information

Help on References: References: NAME( AntBidBlaNic2) 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 Revdite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 09.DM.30





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