Mineralogy Database

Neighborite Mineral Data

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General Neighborite Information

Help on Chemical  Formula: Chemical Formula: NaMgF3
Help on Composition: Composition: Molecular Weight = 104.29 gm
   Sodium     22.04 %  Na   29.71 % Na2O
   Magnesium  23.31 %  Mg   38.65 % MgO
   Fluorine   54.65 %  F    54.65 % F
                -   %   F   -23.01 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaMgF3
Help on Environment: Environment: Found in a drill core penetration of the Eocene Green River Formation.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: South Ouray, Uintah County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frank Neighbor (1906-?), American petroleum geologist, Sun Oil Co. who logged the first specimen.
Help on Name Pronunciation: Name Pronunciation: Neighborite + Pronunciation Say NEIGHBORITE
Help on Synonym: Synonym: ICSD 75291
  PDF 13-303

Neighborite Image

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Comments: Dark red-brown neighborite crystals in matrix.
Location: Mont St. Hilaire, Quebec, Canada. Scale: Crystal Size 1-2 mm.
© Diederik Visser

Neighborite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6986:1:0.7169
Help on Cell Dimensions: Cell Dimensions: a = 5.363, b = 7.676, c = 5.503, Z = 4; V = 226.54 Den(Calc)= 3.06
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pcmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.918(1), 2.71(0.5), 3.83(0.35),1.56(0.3), 2.3(0.3), 2.23(0.2), 1.58(0.1),

Physical Properties of Neighborite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Colorless, Pink, Reddish brown.
Help on Density: Density: 3.03
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Neighborite

Help on Optical Data: Optical Data: Biaxial (?), a=1.364, g=1.367, bire=0.0030

Calculated Properties of Neighborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.93 gm/cc
note: Specific Gravity of Neighborite =3.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PENeighborite = 1.14 barns/electron
U=PENeighborite x rElectron Density= 3.34 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Neighborite is Not Radioactive

Neighborite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.01)where (A)m B (X)3
  (11.01.01)Dana Group Neighborite NaMgF3 Pcmn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 03.AA.35 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AA -M:X = 1:1, 2:3, 3:5, etc.
03.AA.35 Neighborite NaMgF3 Pcmn 2/m 2/m 2/m

Other Neighborite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Neighborite :
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 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 03.AA.35





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