Kumdykolite Mineral Data

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General Kumdykolite Information

Chemical Formula:

NaAlSi3O8

Composition:

Molecular Weight = 262.22 gm

Sodium 8.77 % Na 11.82 % Na₂O

Aluminum 10.29 % Al 19.44 % Al₂O₃

Silicon 32.13 % Si 68.74 % SiO₂

Oxygen 48.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaAlSi₃O₈

Environment:

High Pressure polymorph of albite. Feldspar group

IMA Status:

Proposed IMA 2007

Locality:

Kumdy Kol, Kokchetav, Northern Kazakhstan Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2007-049

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Kumdykolite Crystallography

Axial Ratios:

a:b:c =0.9493:1:0.5576

Cell Dimensions:

a = 8.24, b = 8.68, c = 4.84, Z = 4; V = 346.17 Den(Calc)= 5.03

Crystal System:

OrthorhombicSpace Group: P 2nn or Pmnn

Optical Properties of Kumdykolite

Optical Data:

NCalc= 2.03 - from Gladstone-Dale relationship (KC = 0.2057) where Ncalc=Dcalc*KC+1

Calculated Properties of Kumdykolite

Electron Density:

Bulk Density (Electron Density)=4.99 gm/cc
note: Specific Gravity of Kumdykolite =5.03 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Kumdykolite= 1.67 barns/electron
U=PE_Kumdykolite x rElectron Density= 8.35 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kumdykolite is Not Radioactive

Kumdykolite Classification

Dana Class:

76.01.08.02 (76)Tectosilicate Al-Si Framework

(76.01)with Al-Si frameworks

(76.01.08)Hexagonal Feldspars (High Pressure)

76.01.08.01 Kokchetavite! KAlSi3O8 P 6/mmm(?) 6/m 2/m 2/m

76.01.08.02 Kumdykolite NaAlSi3O8 P 2nn or Pmnn Ortho

Strunz Class:

09.FA.45 09 - SILICATES (Germanates)

09.F - Tektosilicates without Zeolitic H2O

09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1

09.FA.45 Svyatoslavite CaAl2Si2O8 P 2₁ 2

09.FA.45 Kumdykolite NaAlSi3O8 P 2nn or Pmnn Ortho

Other Kumdykolite Information

See Also:

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

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Print or Cut-and-Paste your Kumdykolite Specimen Label here :

Kumdykolite

NaAlSi3O8
Dana No: 76.01.08.02 Strunz No: 09.FA.45
Locality:

Notes: