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Gagarinite-(Y)

Big Photo

Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA
© 2002 DM

Show Gagarinite-(Y) Photos (11)
Formula:
NaCaY(F,Cl)
 
6
System:HexagonalColour:Creamy, yellowish, pink.
Lustre:VitreousHardness:4½
Name:For Yuri Gagarin (1934-1968), the first cosmonaut.
This page provides mineralogical data about Gagarinite-(Y).

Classification of Gagarinite-(Y)

IMA status:Approved
Strunz 8th edition ID:3/A.08-40
Nickel-Strunz 10th (pending) edition ID:3.AB.35

3 : HALIDES
A : Simple halides, without H2O
B : M:X = 1:2
Dana 8th edition ID:11.5.6.1

11 : HALIDE COMPLEXES
5 : AmBX6
Hey's CIM Ref.:8.7.4

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
7 : Halides of the rare earth metals
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Type Occurrence of Gagarinite-(Y)

Type Locality:Verkhnee Espe Massif, Tarbagatai Range, Semipalatinsk Oblysy (Semipalatinsk [Semipalatinskaya] Oblast'), Kazakhstan

Physical Properties of Gagarinite-(Y)

Lustre:Vitreous
Colour:Creamy, yellowish, pink.
Hardness (Mohs):4½

Crystallography of Gagarinite-(Y)

Crystal System:Hexagonal

Optical Data of Gagarinite-(Y)

Type:Uniaxial (+)
RI values: nω = 1.472 nε = 1.492
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Gagarinite-(Y)

Formula:
NaCaY(F,Cl)
 
6
Essential elements:Ca, F, Na, Y
All elements listed in formula:Ca, Cl, F, Na, Y

Relationship of Gagarinite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):
3.AB.05Tolbachite
CuCl
 
2
3.AB.10Coccinite
HgI
 
2
3.AB.15Sellaite
MgF
 
2
3.AB.20Chloromagnesite
MgCl
 
2
3.AB.20Lawrencite
(Fe
2+
 
,Ni)Cl
 
2
3.AB.20Scacchite
MnCl
 
2
3.AB.25Fluorite
CaF
 
2
3.AB.25Frankdicksonite
BaF
 
2
3.AB.30Tveitite-(Y)
(Y, Na)
 
6
Ca
 
6
Ca
 
6
F
 
42
3.AB.35Zajacite-(Ce)
Na(REE
 
x
Ca
 
1-x
)(REE
 
y
Ca
 
1-y
)F
 
6
Related Minerals - Hey's Index Grouping:
8.7.1Fluocerite-(Ce)
(Ce,La)F
 
3
8.7.2Fluocerite-(La)
(La,Ce)F
 
3
8.7.3Tveitite-(Y)
(Y, Na)
 
6
Ca
 
6
Ca
 
6
F
 
42

Other Names for Gagarinite-(Y)

Synonyms:
Nakalifite
German names:
Nakalifit
Russian names:
Гагаринит-(Y)
Spanish names:
Nakalifita

Other Information

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

References for Gagarinite-(Y)

Reference List:American Mineralogist: 47: 805.

Doklady Akademii Nauk SSSR: 141: 954-957.

Doklady of the Academy of Sciences of the USSR, Earth Science Sections: 141: 1290-1293.

Canadian Mineralogist: 32: 563-565.

Internet Links for Gagarinite-(Y)

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    Localities for Gagarinite-(Y)

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    The 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.
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    (TL) indicates type locality. ? 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
     
    • Newfoundland and Labrador
      • Labrador
    		Miller (1996), Can.Min.: 34:349-371; Salvi & Williams-Jones (1995); Am.Min.: 80:1031-1040; Miller (1990), Newfoundland Dept. of Mines & Energy Geol. Sur. Report 90-1: 171-182.
    Kazakhstan
    No reference listed
    No reference listed
    • Semipalatinsk Oblysy (Semipalatinsk [Semipalatinskaya] Oblast')
      • Tarbagatai Range
    		DAN-SSSR,(1961) 141, 954-957
    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'
      • Tuva Republic
    		no reference
    USA
     
    • Washington
      • Okanogan Co.
        • Golden Horn Batholith
    		Micro Probe Volume VI Number 8; Rocks and Minerals, 66:6, p. 454
    Mineral and/or Locality
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