Mineralogy Database

Heklaite Mineral Data

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General Heklaite Information

Help on Chemical  Formula: Chemical Formula: KNaSiF6
Help on Composition: Composition: Molecular Weight = 204.16 gm
   Potassium  19.15 %  K    23.07 % K2O
   Sodium     11.26 %  Na   15.18 % Na2O
   Silicon    13.76 %  Si   29.43 % SiO2
   Fluorine   55.83 %  F    55.83 % F
                -   %   F   -23.51 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KNaSiF6
Help on Environment: Environment: Fumarolic mineral. New structure type; identical with synthetic KNaSiF6
Help on IMA Status: IMA Status: Proposed IMA 2008 (Dana # Added)
Help on Locality: Locality: Hekla volcano, Tonci Balic-´┐Żunic, Iceland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Synonym: Synonym: IMA2008-052

Heklaite Image

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Comments: Post mining sample of heklaite..
Location: Bone Valley Phosphate Mining District, near Bartow, Polk County, Florida. Scale: Specimen size 8.6 x 5.5 x 4.2 cm.
© Isaias Casanova / IC Minerals

Heklaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.6969:1:1.7801
Help on Cell Dimensions: Cell Dimensions: a = 9.337, b = 5.5022, c = 9.795, V = 503.21
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.34(1), 4.26(0.56), 4.33(0.53),2.05(0.52), 3.4(0.49), 3.37(0.47), 2.016(0.29), 2.251(0.27),

Physical Properties of Heklaite

Help on Color: Color: Cololess, White.
Help on Streak: Streak: white

Calculated Properties of Heklaite

Help on Fermion Index: Fermion Index: Fermion Index = 0.0064471931
Boson Index = 0.9935528069
Help on Photoelectric: Photoelectric: PEHeklaite = 2.96 barns/electron
U=PEHeklaite x relectron= . barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 265.28 (Gamma Ray American Petroleum Institute Units)
Concentration of Heklaite per GRapi unit = 0.38 (%)

Estimated Radioactivity from Heklaite - barely detectable


Heklaite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.05)where (A)m B (X)6
  (11.05.09)Dana Group Heklaite! KNaSiF6 P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.DB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.D - Metal Sulfides, M:S = 3:4 and 2:3
  02.DB -M:S = 2:3 and similar
02.DB.05 Heklaite! KNaSiF6 P nma 2/m 2/m 2/m

Other Heklaite Information

Help on See Also: See Also: Links to other databases for Heklaite :
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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Dana No: Strunz No: 02.DB.05