Mineralogy Database

Raite Mineral Data

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General Raite Information

Help on Chemical  Formula: Chemical Formula: Na4Mn++4Si8(O,OH)24•9(H2O)
Help on Composition: Composition: Molecular Weight = 1,052.54 gm
   Sodium      8.74 %  Na   11.78 % Na2O
   Manganese  20.88 %  Mn   26.96 % MnO
   Silicon    21.35 %  Si   45.67 % SiO2
   Hydrogen    1.92 %  H    17.12 % H2O
   Oxygen     47.12 %  O
             ______        ______ 
             100.00 %      101.52 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4Mn2+4Si8O20(OH)2•9(H2O)
Help on Environment: Environment: On the walls of fractures Filled with nepheline in alkalic pegmatite in a differentiated alkalic massif (Lovozero massif, Russia).
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: From the Jubilee pegmatite, on Mt. Karnasurt, near the valley of the Ilmajok River, Lovozero massif, and in the Khibiny massif, Kola Peninsula, Russia. At Mont Saint-Hilaire, Quebec, C Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in honor of the international group of scientists, captained by Thor Heyerdahl, crewing the papyrus ship Ra (1969-1970).
Help on Name Pronunciation: Name Pronunciation: Raite Say RAITE
Help on Synonym: Synonym: ICSD 85315
  PDF 25-1318

Raite Image

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Comments: Golden raite crystals up to 2 mm long filling cavities in white microcline with minor lomonosovite and natrolite.
Location: Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: 7x4x3 cm.
© John Betts - Fine Minerals

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  Mountainite   Raite

Comments: Bright white fibrous acicular mountainite crystal aggregate with pale golden raite.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Raite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =5.7325:1:3.4274
Help on Cell Dimensions: Cell Dimensions: a = 30.44, b = 5.31, c = 18.2, Z = 4; V = 2,941.78 Den(Calc)= 2.38
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: C 222
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.64(1), 2.939(1), 11.4(1),

Physical Properties of Raite

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect, {001} Perfect
Help on Color: Color: Brown, Violet red, Golden yellow, Reddish brown.
Help on Density: Density: 2.32 - 2.39, Average = 2.35
Help on Diaphaneity: Diaphaneity: Semitransparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: yellow

Optical Properties of Raite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2286,KPDmeas= 0.231,KC= 0.2287
Ncalc = 1.53 - 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.54, b=1.542, g=1.55, bire=0.0100, 2V(Calc)=54, 2V(Meas)=53.

Calculated Properties of Raite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Raite =2.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PERaite = 6.19 barns/electron
U=PERaite x rElectron Density= 14.66 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Raite is Not Radioactive

Raite Classification

Help on  Dana Class: Dana Class: (78)Unclassified silicates
  (78.05)possible phyllosilicates
  (78.05.08)Dana Group Raite Na4Mn4Si8(O,OH)24•9(H2O) C 222 2 2 2
Help on  Strunz Class: Strunz Class: 09.EE.55 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EE -Single tetrahedral nets of 6-membered rings
09.EE.55 Raite Na4Mn4Si8(O,OH)24•9(H2O) C 222 2 2 2

Other Raite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Raite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info

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Dana No: Strunz No: 09.EE.55





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