Mineralogy Database

Kogarkoite Mineral Data

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General Kogarkoite Information

Help on Chemical  Formula: Chemical Formula: Na3(SO4)F
Help on Composition: Composition: Molecular Weight = 184.03 gm
   Sodium    37.48 %  Na   50.52 % Na2O
   Sulfur    17.42 %  S    43.51 % SO3
   Oxygen    34.78 %  O
   Fluorine  10.32 %  F    10.32 % F
               -   %   F    -4.35 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3(SO4)F
Help on Environment: Environment: Sublimate from steam issuing from the spring. Also in nepheline syenite pegmatites in Russia.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Hortense Hot Springs, Chalk Creek, Chaffee County, Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Lia Nikolaevna Kofarko (1936-), Russian geochemist, who first noticed the mineral in Russia.
Help on Name Pronunciation: Name Pronunciation: Kogarkoite + Pronunciation Say KOGARKOITE
Help on Synonym: Synonym: ICSD 31145
  PDF 25-827

Kogarkoite Image

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Comments: Pale green granular mass of kogarkoite with yellow native sulfur.
Location: Vulcano, Sicily, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kogarkoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.6008:1:1.6462
Help on Cell Dimensions: Cell Dimensions: a = 18.073, b = 6.949, c = 11.44, Z = 12; beta = 107.71° V = 1,368.65 Den(Calc)= 2.68
Help on Crystal System: Crystal System: Monoclinic Space Group: Unk (pseudo HEX-R)
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.48(1), 2.718(0.85), 2.991(0.85),

Physical Properties of Kogarkoite

Help on Color: Color: Colorless, White, Light blue.
Help on Density: Density: 2.676 - 2.679, Average = 2.67
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Fluorescent, Short UV=pale blue, Long UV=white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Kogarkoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1642,KPDmeas= 0.1643,KC= 0.1778
Ncalc = 1.48
Help on Optical Data: Optical Data: Biaxial (+), a=1.439, b=1.439, g=1.442, bire=0.0030
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Kogarkoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Kogarkoite =2.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014737376
Boson Index = 0.9985262624
Help on Photoelectric: Photoelectric: PEKogarkoite = 1.70 barns/electron
U=PEKogarkoite x rElectron Density= 4.46 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kogarkoite is Not Radioactive

Kogarkoite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.01)where (A B)m (XO4)p Zq where m:p>2:1
  (30.01.06)Dana Group Kogarkoite Na3(SO4)F Unk (pseudo HEX-R) Mono
Help on  Strunz Class: Strunz Class: 07.BD.15 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BD -With only large cations
07.BD.15 Kogarkoite Na3(SO4)F Unk (pseudo HEX-R) Mono

Other Kogarkoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;www.saint-hilaire.ca) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Kogarkoite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 07.BD.15





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