Kogarkoite Mineral Data

General Kogarkoite Information

Chemical Formula:

Na3(SO4)F

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

Empirical Formula:

Na₃(SO₄)F

Environment:

Sublimate from steam issuing from the spring. Also in nepheline syenite pegmatites in Russia.

IMA Status:

Approved IMA 1973

Locality:

Hortense Hot Springs, Chalk Creek, Chaffee County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Lia Nikolaevna Kofarko (1936-), Russian geochemist, who first noticed the mineral in Russia.

Name Pronunciation:

Kogarkoite + Pronunciation

Synonym:

ICSD 31145

PDF 25-827

Kogarkoite Image

Images:

Kogarkoite

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

Axial Ratios:

a:b:c =2.6008:1:1.6462

Cell Dimensions:

a = 18.073, b = 6.949, c = 11.44, Z = 12; beta = 107.71° V = 1,368.65 Den(Calc)= 2.68

Crystal System:

MonoclinicSpace Group: Unk (pseudo HEX-R)

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

By Intensity(I/I_o): 3.48(1), 2.718(0.85), 2.991(0.85),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Pabst A , Sharp W N , American Mineralogist , 58 (1973) p.116-127, Kogarkoite, a new natural phase in the system Na2SO4 - NaF - NaCl

View Additional jPOWD Structure files for Kogarkoite
[1]

Physical Properties of Kogarkoite

Color:

Colorless, White, Light blue.

Density:

2.676 - 2.679, Average = 2.67

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Hardness:

3.5 - Copper Penny

Luminescence:

Fluorescent, Short UV=pale blue, Long UV=white.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kogarkoite

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

Optical Data:

Biaxial (+), a=1.439, b=1.439, g=1.442, bire=0.0030

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Kogarkoite

Electron Density:

Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Kogarkoite =2.68 gm/cc.

Fermion Index:

Fermion Index = 0.0014737376
Boson Index = 0.9985262624

Photoelectric:

PE_Kogarkoite= 1.70 barns/electron
U=PE_Kogarkoite x rElectron Density= 4.46 barns/cc.

Radioactivity:

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

Kogarkoite Classification

Dana Class:

30.01.06.01 (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

30.01.06.01 Kogarkoite Na3(SO4)F Unk (pseudo HEX-R) Mono

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

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;www.saint-hilaire.ca) OPTIC PROP.(Dana8)

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
17 - WWW-MINCRYST

Search for Kogarkoite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Kogarkoite :

A Bijoux Google Search for Kogarkoite
Adam's Minerals Google Search for Kogarkoite
Cape Minerals Google Search for Kogarkoite
Dakota Matrix Minerals Google Search for Kogarkoite
Excalibur Mineral Corp. Google Search for Kogarkoite
Exceptional Minerals Google Search for Kogarkoite
John Betts Fine Minerals Search for Kogarkoite
McDougall Minerals Google Search for Kogarkoite
Mineral News Website Link
Rock and Mineral Shows Google Search for Kogarkoite
Weinrich Minerals, Inc. Google Search for Kogarkoite

Ask about Kogarkoite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Kogarkoite

Na3(SO4)F
Dana No: 30.01.06.01 Strunz No: 07.BD.15
Locality:

Notes: