Kumdykolite Mineral Data (original) (raw)
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:
PEKumdykolite = 1.67 barns/electron
U=PEKumdykolite 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 - 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 Kumdykolite Specimen Label here :
Kumdykolite
NaAlSi3O8
Dana No: 76.01.08.02 Strunz No: 09.FA.45
Locality:
Notes: