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Khanneshite

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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:Central Khanneshin deposit, Khanneshin complex, Dushan District, Helmand Province (Hilmend Province; 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)(CO
 
3
)(OH,F)
11.8.6Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)(CO
 
3
)(OH,F)
11.8.7Hydroxylbastnäsite-(La)
(La,Ce)(CO
 
3
)(F,OH)
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)
Ca(Nd,La,Ce)(CO
 
3
)
 
2
(OH)
 
.
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(CO
 
3
)
 
2
(OH) · 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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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Khanneshite details from Handbook of Mineralogy (PDF)
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    • Localities for Khanneshite

    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.
    Hide Locality List
    (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 Province (Hilmend Province; Hilmand Province)
      • Dushan District
        • Khanneshin complex
    		Yeremenko, G.K., and Bel’ko, V.A. (1982): Zap. Vses. Mineral. Obshch. 111, 321–324; New Data on Minerals (2004): 39: 50-64
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Afrikanda
    		www.koeln.netsurf.de/~w.steffens/afri.htm; New Data on Minerals (2004): 39: 50-64
          • Khibiny Massif
    		http://maurice.strahlen.org/kola/khibiny.htm
    New Data on Minerals (2004): 39: 50-64
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