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Kupletskite-(Cs)

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Darai-Pioz (Dara-i-Pioz; Dara-Pioz) Glacier, Alai (Alayskiy) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan
© Knut Eldjarn

Show Kupletskite-(Cs) Photos (2)



Formula:
(Cs,K,Na)
 
3
(Mn,Fe
2+
 
)
 
7
(Ti,Nb)
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
System:TriclinicColour:Brown
Lustre:VitreousHardness:4
Member of:Astrophyllite Group
Name:In allusion to its composition, being the caesium-dominant analogue of kupletskite.


Astrophyllite Group.
Kupletskite-Kupletskite-(Cs) Series.
Originally named cesium kupletskite. The cesium analogue of Kupletskite.

Classification of Kupletskite-(Cs)

IMA status:Approved
Strunz 8th edition ID:8/G.12-60
Nickel-Strunz 10th (pending) edition ID:9.DC.05

9 : SILICATES (Germanates)
D : Inosilicates
C : Inosilicates with branched 2-periodic single chains; Si2O6 + 2SiO3 Si4O12
Dana 8th edition ID:69.1.1.3

69 : INOSILICATES Chains with Side Branches or Loops
1 : Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
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Type Occurrence of Kupletskite-(Cs)

Type Locality:Darai-Pioz (Dara-i-Pioz; Dara-Pioz) Glacier, Alai (Alayskiy) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan

Physical Properties of Kupletskite-(Cs)

Lustre:Vitreous
Colour:Brown
Hardness (Mohs):4

Crystallography of Kupletskite-(Cs)

Crystal System:Triclinic

Optical Data of Kupletskite-(Cs)

Type:Biaxial (+)
Dispersion:r < v

Chemical Properties of Kupletskite-(Cs)

Formula:
(Cs,K,Na)
 
3
(Mn,Fe
2+
 
)
 
7
(Ti,Nb)
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
Essential elements:Cs, Mn, O, Si, Ti
All elements listed in formula:Cs, F, Fe, H, K, Mn, Na, Nb, O, Si, Ti

Relationship of Kupletskite-(Cs) to other Species

Series:Forms a series with Kupletskite (see here)
Member of:Astrophyllite Group
Other Members of Group:

- +
Astrophyllite
(K,Na)
 
3
(Fe,Mn)
 
7
Ti
 
2
Si
 
8
O
 
24
(O,OH)
 
7
Hydroastrophyllite
(H
 
3
O,K,Ca)
 
3
(Fe,Mn)
 
5-65
Ti
 
2
Si
 
8
(O,OH)
 
31
Kupletskite
(K,Na)
 
3
(Mn,Fe)
 
7
Ti
 
2
Si
 
8
O
 
26
(OH)
 
4
F
Magnesioastrophyllite
(Na,K)
 
4
Mg
 
2
(Fe,Fe,Mn)
 
5
Ti
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
Nalivkinite
Li
 
2
Na(Fe
2+
 
,Mn
2+
 
)
 
7
Ti
 
2
Si
 
8
O
 
26
(OH)
 
4
F
Niobokupletskite
K
 
2
Na(Mn,Zn,Fe)
 
7
(Nb,Zr,Ti)
 
2
Si
 
8
O
 
26
(OH)
 
4
(O,F)
Niobophyllite
(K,Na)
 
3
(Fe,Mn)
 
6
(Nb,Ti)
 
2
Si
 
8
(O,OH,F)
 
31
Tarbagataite
(K□)Ca(Fe
2+
 
,Mn)
 
7
Ti
 
2
(Si
 
4
O
 
12
)
 
2
O
 
2
(OH)
 
5
Zircophyllite
(K,Na)
 
3
(Mn,Fe
2+
 
)
 
7
(Zr,Ti)
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
Related Minerals - Nickel-Strunz Grouping):

- +
9.DC.05Astrophyllite
(K,Na)
 
3
(Fe,Mn)
 
7
Ti
 
2
Si
 
8
O
 
24
(O,OH)
 
7
9.DC.05Hydroastrophyllite
(H
 
3
O,K,Ca)
 
3
(Fe,Mn)
 
5-65
Ti
 
2
Si
 
8
(O,OH)
 
31
9.DC.05Kupletskite
(K,Na)
 
3
(Mn,Fe)
 
7
Ti
 
2
Si
 
8
O
 
26
(OH)
 
4
F
9.DC.05Magnesioastrophyllite
(Na,K)
 
4
Mg
 
2
(Fe,Fe,Mn)
 
5
Ti
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
9.DC.05Niobophyllite
(K,Na)
 
3
(Fe,Mn)
 
6
(Nb,Ti)
 
2
Si
 
8
(O,OH,F)
 
31
9.DC.05Zircophyllite
(K,Na)
 
3
(Mn,Fe
2+
 
)
 
7
(Zr,Ti)
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
9.DC.05Niobokupletskite
K
 
2
Na(Mn,Zn,Fe)
 
7
(Nb,Zr,Ti)
 
2
Si
 
8
O
 
26
(OH)
 
4
(O,F)
9.DC.05Nalivkinite
Li
 
2
Na(Fe
2+
 
,Mn
2+
 
)
 
7
Ti
 
2
Si
 
8
O
 
26
(OH)
 
4
F
9.DC.05Sveinbergeite
Ca(Fe
2+
6
Fe
3+
 
)Ti
 
2
(Si
 
4
O
 
12
)
 
2
O
 
2
(OH)
 
5
(H
 
2
O)
 
4

Other Names for Kupletskite-(Cs)

Synonyms:
Caesium-KupletskiteCesium-kupletskite
Other Languages:
Russian:Куплетскит-(Cs)

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 Kupletskite-(Cs)

Reference List:

- +
American Mineralogist: 57: 328.

Bayliss, P. (2007): Cesium kupletskite renamed kupletskite-(Cs). Mineralogical Magazine, 71, 365-367.

Internet Links for Kupletskite-(Cs)

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    • Localities for Kupletskite-(Cs)

    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.
    Tajikistan
     
    • Region of Republican Subordination
      • Tien Shan Mts
        • Alai (Alayskiy) Range
    		www.koeln.netsurf.de/~w.steffens/dara.htm; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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