Kupletskite-(Cs) Mineral Data

General Kupletskite-(Cs) Information

Chemical Formula:

(Cs,K)2Na(Mn,Fe++,Li)7(Ti,Nb)2Si8O26(OH)4F

Composition:

Molecular Weight = 1,455.85 gm

Cesium 13.69 % Cs 14.52 % Cs₂O

Potassium 1.34 % K 1.62 % K₂O

Sodium 1.58 % Na 2.13 % Na₂O

Lithium 0.19 % Li 0.41 % Li₂O

Titanium 4.60 % Ti 7.68 % TiO₂

Manganese 17.36 % Mn 22.41 % MnO

Niobium 3.19 % Nb 4.56 % Nb₂O₅

Iron 8.06 % Fe 9.87 % FeO / 0.55 % Fe₂O₃

Silicon 15.43 % Si 33.02 % SiO₂

Hydrogen 0.28 % H 2.47 % H₂O

Oxygen 32.97 % O

Fluorine 1.30 % F 1.30 % F

- % F -0.55 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cs_1.5K_0.5NaMn²⁺_4.6Fe²⁺₂Li_0.4Ti_1.4Nb_0.5Fe³⁺_0.1Si₈O₂₆(OH)₄F

Environment:

At the border of aegirine-microcline-quartz pegmatites.

IMA Status:

Approved IMA 1971

Locality:

In the [Dara-i-Pioz massif,] Alai Range, Tien Shan, Tadzhikistan. Link to MinDat.org Location Data.

Name Origin:

For the cesium in the composition and similarity to kupletskite. Renamed kupletskite-(Cs) from cesium kupletskite (IMA order 04-A).

Name Pronunciation:

Kupletskite-(Cs) + Pronunciation

Synonym:

Cesium-kupletskite

IMA2004-04a

Kupletskite-(Cs) Image

Images:

Click Here for Larger Kupletskite-(Cs) Image

Kupletskite-(Cs) Tienshanite

Comments: Dark olive-green colored crystalline tienshanite with cesium-kupletskite in microcline.
Location: Dara-Pioz, Tien-Shan, Tadzhikistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kupletskite-(Cs) Crystallography

Axial Ratios:

a:b:c =0.4608:1:1.8023

Cell Dimensions:

a = 5.41, b = 11.74, c = 21.16, Z = 2; alpha = 89°, beta = 90°, gamma = 102.383° V = 1,312.48 Den(Calc)= 3.68

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 10.4(1), 2.66(0.8), 3.54(0.8),2.79(0.8), 2.58(0.6), 1.772(0.4), 4.09(0.3),

Physical Properties of Kupletskite-(Cs)

Cleavage:

{001} Perfect

Color:

Brown, Black.

Density:

3.68

Diaphaneity:

Translucent to Opaque

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

4 - Fluorite

Luster:

Vitreous - Adamantine

Optical Properties of Kupletskite-(Cs)

Gladstone-Dale:

CI meas= 0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2016,KPDmeas= 0.2016,KC= 0.2103
Ncalc = 1.77

Optical Data:

Biaxial (+), b=1.726, g=1.758, , 2V(Meas)=75.

Calculated Properties of Kupletskite-(Cs)

Electron Density:

Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Kupletskite-(Cs) =3.68 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Kupletskite-(Cs)}= 68.38 barns/electron
U=PE_{Kupletskite-(Cs)} x r_electron= 238.55 barns/cc.

Radioactivity:

GRapi = 18.37 (Gamma Ray American Petroleum Institute Units)
Concentration of Kupletskite-(Cs) per GRapi unit = 5.44 (%)

Estimated Radioactivity from Kupletskite-(Cs) - barely detectable

Kupletskite-(Cs) Classification

Dana Class:

69.01.01.03 (69)Inosilicate Chains with Side Branches or Loops

(69.01)with (P=2, and N=4, 2 branches)

(69.01.01)Astrophyllite group

69.01.01.01 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1

69.01.01.02 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m

69.01.01.03 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1

69.01.01.04 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri

69.01.01.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1

69.01.01.06 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1

69.01.01.07 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m

69.01.01.08 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1

69.01.01.09 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1

Strunz Class:

09.DC.05 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DC -Inosilicates with branched 2-periodic single chains Si2O6 + 2SiO3 ® Si4O12

09.DC.05 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1

09.DC.05 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1

09.DC.05 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m

09.DC.05 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m

09.DC.05 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1

09.DC.05 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri

09.DC.05 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1

09.DC.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1

09.DC.05 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1

Other Kupletskite-(Cs) Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Kupletskite-(Cs) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Kupletskite-(Cs) Specimen Label here :

Kupletskite-(Cs)

(Cs,K)2Na(Mn,Fe++,Li)7(Ti,Nb)2Si8O26(OH)4F
Dana No: 69.01.01.03 Strunz No: 09.DC.05
Locality:

Notes: