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Yaroslavite

Formula:
Ca
 
3
Al
 
2
F
 
10
(OH)
 
2
·H
 
2
O
System:OrthorhombicColour:White
Lustre:VitreousHardness:4
Name:Named after its discovery locality, Yaroslavskoye tin deposit, Primorskii Kray, Russia.
This page provides mineralogical data about Yaroslavite.

Classification of Yaroslavite

IMA status:Approved
Strunz 8th edition ID:3/C.02-30
Nickel-Strunz 10th (pending) edition ID:3.CB.50

3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
Dana 8th edition ID:11.6.15.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
Hey's CIM Ref.:8.6.14

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
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Type Occurrence of Yaroslavite

Type Locality:Yaroslavskoye Sn Deposit, Voznesenka ore District, Primorskiy Kray, Far-Eastern Region, Russia
Year of Discovery:1966

Physical Properties of Yaroslavite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:White
Streak:White
Hardness (Mohs):4

Crystallography of Yaroslavite

Crystal System:Orthorhombic
Cell Parameters:a = 8.76Å, b = 5.54Å, c = 4.52Å
Ratio:a:b:c = 1.581 : 1 : 0.816
Unit Cell Volume:V 219.36 ų (Calculated from Unit Cell)

Optical Data of Yaroslavite

Type:Biaxial (-)
RI values: nα = 1.413 nβ = 1.416 - 1.417 nγ = 1.423
2V:Measured: 74° , Calculated: 68° to 80°
Maximum Birefringence:δ = 0.010

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

Chemical Properties of Yaroslavite

Formula:
Ca
 
3
Al
 
2
F
 
10
(OH)
 
2
·H
 
2
O
Essential elements:Al, Ca, F, H, O
All elements listed in formula:Al, Ca, F, H, O

Relationship of Yaroslavite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.CB.05Cryolithionite
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
3.CB.15Cryolite
Na
 
3
[AlF
 
6
]
3.CB.15Elpasolite
NaK
 
2
[AlF
 
6
]
3.CB.15Simmonsite
Na
 
2
Li[AlF
 
6
]
3.CB.20Colquiriite
CaLi[AlF
 
6
]
3.CB.25Weberite
Na
 
2
Mg[F|AlF
 
6
]
3.CB.30Karasugite
SrCa[Al(F,OH)
 
7
]
3.CB.35Usovite
Ba
 
2
CaMgAl
 
2
F
 
14
3.CB.40Pachnolite
NaCaAlF
 
6
·H
 
2
O
3.CB.40Thomsenolite
NaCaAlF
 
6
·H
 
2
O
3.CB.45Carlhintzeite
Ca
 
2
[F|AlF
 
6
] · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
8.6.1Zharchikhite
AlF(OH)
 
2
8.6.2Chloraluminite
AlCl
 
3
·6H
 
2
O
8.6.3Cadwaladerite
Al(OH)
 
2
Cl·4H
 
2
O
8.6.4Cryolithionite
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
8.6.5Cryolite
Na
 
3
[AlF
 
6
]
8.6.6Chiolite
Na
 
5
Al
 
3
F
 
14
8.6.7Elpasolite
NaK
 
2
[AlF
 
6
]
8.6.8Weberite
Na
 
2
Mg[F|AlF
 
6
]
8.6.9Ralstonite
NaMgAl(F,OH)
 
6
·H
 
2
O
8.6.10Koenenite
Na
 
4
Mg
 
9
Al
 
4
Cl
 
12
(OH)
 
22
8.6.11 Chlor-manasseite
Mg
 
x
Al(OH)
 
2x+2
Cl·(x-0.8)H
 
2
O x about 1.75
8.6.12Gearksutite
Ca[Al(F,OH)
 
5
(H
 
2
O)]
8.6.13Prosopite
CaAl
 
2
(F,OH)
 
8
8.6.15Carlhintzeite
Ca
 
2
[F|AlF
 
6
] · H
 
2
O
8.6.16Colquiriite
CaLi[AlF
 
6
]
8.6.17Thomsenolite
NaCaAlF
 
6
·H
 
2
O
8.6.18Pachnolite
NaCaAlF
 
6
·H
 
2
O
8.6.19Zirklerite
(Fe,Mg,Ca)
 
9
Al
 
4
Cl
 
18
(OH)
 
12
·14H
 
2
O (?)

Other Names for Yaroslavite

Other Languages:
German:Yaroslavit
Spanish:Yaroslavita

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 Yaroslavite

Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1966): 95(1): 39-44.

American Mineralogist (1966): 51: 1546-1547, 1820.


Internet Links for Yaroslavite

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    Localities for Yaroslavite

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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.
    (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.
    Russia
     
    • Far-Eastern Region
      • Primorskiy Kray
        • Voznesenka ore District
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 3rd Nov 2009 22:53:14