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Khanneshite

Formula:
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
System:HexagonalColour:Light yellow, almost ...
Hardness:3 - 4
Name:After the type locality at Khanneshin, Afghanistan.


Burbankite Group

Classification of Khanneshite

IMA status:Approved
Strunz 8th edition ID:5/B.05-110
Nickel-Strunz 10th (pending) edition ID:5.AC.30

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
Dana 8th edition ID:14.4.4.2

14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous
Hey's CIM Ref.:11.8.15

11 : Carbonates
8 : Carbonates of the rare earths
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Type Occurrence of Khanneshite

Type Locality:Khanneshin, Helmand (Hilmend; Hilmand) Province, Afghanistan
Year of Discovery:1982

Physical Properties of Khanneshite

Diaphaneity (Transparency):Transparent
Colour:Light yellow, almost colourless
Hardness (Mohs):3 - 4
Tenacity:Brittle

Crystallography of Khanneshite

Crystal System:Hexagonal
Cell Parameters:a = 10.65Å, c = 6.58Å
Ratio:a:c = 1 : 0.618
Unit Cell Volume:V 646.33 ų (Calculated from Unit Cell)

Optical Data of Khanneshite

Type:Uniaxial (-)
RI values: nω = 1.620 - 1.623 nε = 1.609 - 1.610
Maximum Birefringence:δ = 0.011 - 0.013

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

Chemical Properties of Khanneshite

Formula:
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
Essential elements:Ba, C, Na, O
All elements listed in formula:Ba, C, Ca, Ce, Na, O, Sr

Relationship of Khanneshite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.AC.05Eitelite
Na
 
2
Mg(CO
 
3
)
 
2
5.AC.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
5.AC.10Zemkorite
Na
 
2
Ca(CO
 
3
)
 
2
5.AC.15Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.20Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.25Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
5.AC.30Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
5.AC.30Calcioburbankite
Na
 
3
(Ca,REE,Sr)
 
3
(CO
 
3
)
 
5
5.AC.30Sanrománite
Na
 
2
CaPb
 
3
[CO
 
3
]
 
5
Related Minerals - Hey's Index Grouping:

- +
11.8.1Calkinsite-(Ce)
(Ce,La)
 
2
[CO
 
3
]
 
3
 · 4H
 
2
O
11.8.2Lanthanite-(La)
(La,Ce)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.3Lanthanite-(Ce)
(Ce,La,Nd)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.4Lanthanite-(Nd)
(Nd,La)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.5Hydroxylbastnäsite-(Ce)
(Ce,La)[(OH,F)|CO
 
3
]
11.8.6Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)[(OH,F)|CO
 
3
]
11.8.7Hydroxylbastnäsite-(La)
(La,Ce)[(OH,F)|CO
 
3
]
11.8.8Remondite-(Ce)
Na
 
3
(Ce,La,Ca,Na,Sr)
 
3
(CO
 
3
)
 
5
11.8.9Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
 · 2-3H
 
2
O
11.8.10Kimuraite-(Y)
Ca(Y,Nd)
 
2
[CO
 
3
]
 
4
 · 6H
 
2
O
11.8.11Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
[CO
 
3
]
 
7
 · 9H
 
2
O
11.8.12Calcioancylite-(Nd)
(Nd,Ce)
 
3
Ca(CO
 
3
)
 
4
(OH)
 
3
·H
 
2
O
11.8.13Calcioancylite-(Ce)
(Ca,Sr)Ce(CO
 
3
)
 
2
OH·H
 
2
O
11.8.14Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
11.8.16Donnayite-(Y)
Sr
 
3
NaCaY(CO
 
3
)
 
6
·3H
 
2
O
11.8.17Carbocernaite
(Ca,Na)(Sr,Ce,Ba)(CO
 
3
)
 
2
11.8.18Ancylite-(Ce)
SrCe[OH|(CO
 
3
)
 
2
] · H
 
2
O
11.8.19Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
11.8.20Mckelveyite-(Y)
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
·3H
 
2
O
11.8.21Sahamalite-(Ce)
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4

Other Names for Khanneshite

Synonyms:
IMA1981-025
Other Languages:
German:Khanneshit
Russian:Ханнешит
Spanish:Khanneshita

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 Khanneshite

Reference List:Yeremenko, G.K. and Bel’ko, V.A. (1982) Khanneshite, (Na, Ca)3(Ba, Sr,
RE, Ca)3(CO3)5 – a new mineral of the burbankite group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 111,
321–324 (in Russian).

American Mineralogist (1983): 68: 1249.

Pekov, I.V., Chukanov, N.V., and Belovitskaya, Y.V. (1998) Khanneshite and petersenite-(Ce) from the Khibiny massif. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 127(2): 92-100 (in Russian w. English abstract).

Internet Links for Khanneshite

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    Localities for Khanneshite

    Hide Locality List
    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.
    Afghanistan
     
    • Helmand (Hilmend; Hilmand) Province
    		ZVMO (1982) 111, 321-324; Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Afrikanda
    		www.koeln.netsurf.de/~w.steffens/afri.htm
          • Khibiny Massif
    		http://maurice.strahlen.org/kola/khibiny.htm
    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: 9th Nov 2009 05:10:03