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Neighborite

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Formula:
NaMgF3
System:
Orthorhombic
Colour:
Colorless, cream, pink, ...
Lustre:
Vitreous, Greasy, Dull
Hardness:
Name:
For Frank Neighbor, Sun Oil Co. geologist, Salt Lake City Utah
Related to the K analogue, parascandolaite.


Classification of Neighborite

Approved
3.AA.35

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
11.1.1.1

11 : HALIDE COMPLEXES
1 : AmBX3
8.4.2

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
4 : Halides of the alkaline earths and Mg

Physical Properties of Neighborite

Vitreous, Greasy, Dull
Diaphaneity (Transparency):
Transparent, Opaque
Colour:
Colorless, cream, pink, red, brown
Comment:
May be zoned
Hardness (Mohs):
Fracture:
Irregular/Uneven
Density:
3.03(3) g/cm3 (Measured)    3.06 g/cm3 (Calculated)

Optical Data of Neighborite

Type:
Isotropic
Dispersion:
r < v weak

Chemical Properties of Neighborite

Formula:
NaMgF3
Elements listed in formula:

Crystallography of Neighborite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 5.36 Å, b = 7.67 Å, c = 5.5 Å
Ratio:
a:b:c = 0.699 : 1 : 0.717
Unit Cell Volume:
V 226.11 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Pseudo-octahedral or pseudocubic crystals, oblong to rounded grains
Twinning:
Polysynthetic and interpenetrant
Comment:
space group Pbnm

Occurrences of Neighborite

Type Occurrence of Neighborite

Geological Setting of Type Material:
Aluminum deficient, dolomitic oil shale

Relationship of Neighborite to other Species

Other Members of Group:
3.AA.05MarshiteCuI
3.AA.05Miersite(Ag,Cu)I
3.AA.05NantokiteCuCl
3.AA.05UM1999-11:I:CuSCu(I,S)
3.AA.10IodargyriteAgI
3.AA.10Tocornalite(Ag,Hg)I
3.AA.15BromargyriteAgBr
3.AA.15ChlorargyriteAgCl
3.AA.20CarobbiiteKF
3.AA.20GriceiteLiF
3.AA.20HaliteNaCl
3.AA.20SylviteKCl
3.AA.20VilliaumiteNaF
3.AA.25SalammoniacNH4Cl
3.AA.25UM1998-03-Cl:TlTlCl
3.AA.25LafossaiteTlCl
3.AA.30CalomelHgCl
3.AA.30KuzminiteHg(Br,Cl)
3.AA.30MoscheliteHgI
3.AA.40ChlorocalciteKCaCl3
3.AA.45KolaritePbTeCl2
3.AA.50RadhakrishnaitePbTe3(Cl,S)2
3.AA.55ChallacolloiteKPb2Cl5
3.AA.60HephaistositeTlPb2Cl5
8.4.1SellaiteMgF2
8.4.3BischofiteMgCl2 · 6H2O
8.4.4KorshunovskiteMg2Cl(OH)3 · 4H2O
8.4.5CarnalliteKMgCl3 · 6H2O
8.4.6TachyhydriteCaMg2Cl6 · 12H2O
8.4.7FluoriteCaF2
8.4.8SinjariteCaCl2 · 2H2O
8.4.9AntarcticiteCaCl2 · 6H2O
8.4.10ChlorocalciteKCaCl3
8.4.11RorisiteCaClF
8.4.12JarliteNa2(Sr,Na)14Mg2Al12F64(OH,H2O)4
8.4.13CalcjarliteNaCa3Al3F16
8.4.14TikhonenkoviteSrAlF4(OH) · H2O
8.4.15AcuminiteSrAlF4(OH) · H2O
8.4.16FrankdicksoniteBaF2
8.4.17UsoviteBa2CaMgAl2F14
8.4.18BøgvaditeNa2Ba2SrAl4F20

Other Names for Neighborite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Neighborite

Reference List:
American Mineralogist (1961): 46: 387-393.

Mineralogical Record (1990): 21: 325-326.

Pischedda, V., Ferraris, G., Raade, G. (2005): Single-crystal X-ray diffraction study on neighborite (NaMgF3) from Gjerdingselva, Norway. Neues Jahrbuch für Mineralogie, Abhandlungen, 182, 23-29.

Internet Links for Neighborite

mindat.org URL:
https://www.mindat.org/min-2871.html
Please feel free to link to this page.
Specimens:
The following Neighborite specimens are currently listed for sale on minfind.com.

Localities for Neighborite

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
      • Lajemmerais RCM
        • Varennes & St-Amable
          • Saint-Amable sill
R. Tibbit, Horváth & Can. Museum of Nature collections - XRD & EDS
Norway
 
  • Oppland
    • Lunner
      • Nordmarka
Raade, G. & Haug, J. (1980): Rare Fluorides from a soda granite in the Oslo Region, Norway. Mineralogical Record, 11,83-91
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
P.M. Karashov data
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
http://maurice.strahlen.org/kola/khibiny.htm
Khomyakov A P, Aleksandrov V V, Krasnova N I, Ermilov V V, Smolyaninova N N (1982) Bonshtedtite, Na3Fe(PO4)(CO3), a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 111, issue 4, 486-490
Khomyakov A P, Aleksandrov V V, Krasnova N I, Ermilov V V, Smolyaninova N N (1982) Bonshtedtite, Na3Fe(PO4)(CO3), a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 111, issue 4, 486-490
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Lovozero Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
            • Umbozero mine (Umbozerskii mine; Umba Mine)
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Khomyakov A P, Shumyatskaya N G, Polezhaeva L T (1992) Shomiokite-(Y), Na3Y(CO3)3·3H2O: a new mineral, Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 121, issue 6 129-132
          • Suoluaiv Mt
Tanzania
 
  • Arusha Region
Mitchell, R.H. (1997) Carbonate-carbonate immiscibility, neighborite and potassium iron sulphide in Oldoinyo Lengai natrocarbonatite. Mineralogical Magazine: 61: 779-789.; Mattsson, H. B., & Reusser, E. (2010). Mineralogical and geochemical characterization of ashes from an early phase of the explosive September 2007 eruption of Oldoinyo Lengai (Tanzania). Journal of African Earth Sciences, 58(5), 752-763.; Victoria Sekisova, Victor Victorovich Sharygin, A. N. Zaitsev, Stanislav Strekopytov (2015) Liquid Immiscibility Геология и геофизика, 2015, т. 56, № 12, с. 2173—2197
USA
 
  • Utah
    • Uintah Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
Am Min 46:379-393
      • Uteland Knoll District (Ouray District)
        • Ouray
Min Rec 8:5 p369
Mineral and/or Locality  
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