Mineralogy Database

Chlorbartonite Mineral Data

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General Chlorbartonite Information

Help on Chemical  Formula: Chemical Formula: K6Fe24S26(Cl,S)
Help on Composition: Composition: Molecular Weight = 2,453.28 gm
   Potassium   9.72 %  K
   Iron       54.63 %  Fe
   Copper      0.52 %  Cu
   Sulfur     34.11 %  S
   Chlorine    1.01 %  Cl
             100.00 % 
Help on Empirical Formula: Empirical Formula: K6.1Fe2+24Cu0.2S26.1Cl0.7
Help on Environment: Environment: Accessory mineral in a microcline-pectolite-sodalite-aegirine vein within feldspathic urtite. Included in sodalite and natrolite crystals.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Mount Koashva, Khibina Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Cl dominant analog of bartonite.
Help on Synonym: Synonym: IMA2000-048

Chlorbartonite Image

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Comments: Black grains of chlorbartonite in sodalite-natrolite aggregates.
Location: Mount Koashva, Khibina massif, Kola Peninsula, Russia. Scale: Picture size 1 cm.
© Canadian Mineralogist

Chlorbartonite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.98574
Help on Cell Dimensions: Cell Dimensions: a = 10.381, c = 20.614, Z = 2; V = 2,221.47 Den(Calc)= 3.67
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.986(1)(224), 1.83(0.82)(408), 5.97(0.65)(112),2.374(0.57)(316), 1.834(0.51)(440), 3.121(0.45)(312), 2.38(0.38)(332), 9.25(0.33)(101),

Physical Properties of Chlorbartonite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown, Black.
Help on Density: Density: 3.7 - 3.74, Average = 3.72
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Sub Metallic
Help on Magnetism: Magnetism: Weakly magnetic
Help on Streak: Streak: black

Optical Properties of Chlorbartonite

Help on RL Anisotrophism: RL Anisotrophism: None.
Help on RL Color: RL Color: Yellowish brown.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Chlorbartonite in Air
λ R  ∑ R(λ) 
 420 nm    9.80   
 440 nm    9.90 
 460 nm   10.20 
 480 nm   10.80 
 500 nm   11.50 
 520 nm   12.30 
 540 nm   13.10 
 560 nm   14.00 
 580 nm   14.80 
 600 nm   15.60 
 620 nm   16.40 
 640 nm   17.10 
 660 nm   17.80 
 680 nm   18.40 
 700 nm   19.00 
 720 nm   19.50 
Calculated Relative Intensity Colors of Chlorbartonite in Air
   0%   90% 100% 180% 270% 360% 450% 540% 630% 720% 810% 850%

Calculated Properties of Chlorbartonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.52 gm/cc
note: Specific Gravity of Chlorbartonite =3.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEChlorbartonite = 19.68 barns/electron
U=PEChlorbartonite x relectron= 69.21 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 134.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Chlorbartonite per GRapi unit = 0.74 (%)

Estimated Radioactivity from Chlorbartonite - barely detectable


Chlorbartonite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.09)where Am Bn Xp, with (m+n):p=1:1
  (02.09.19)Bartonite Group Bartonite K3Fe10S14 I 4/mmm 4/m 2/m 2/m Chlorbartonite! K6Fe24S26(Cl,S) I 4/mmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.FC.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O
  02.FC -With Cl, Br, I (halide-sulfides)
02.FC.10 Bartonite K3Fe10S14 I 4/mmm 4/m 2/m 2/m
02.FC.10 Chlorbartonite! K6Fe24S26(Cl,S) I 4/mmm 4/m 2/m 2/m

Other Chlorbartonite Information

Help on References: References: NAME( CanMin, v 41, p 503) PHYS. PROP.(CanMin, v 41, p 503) OPTIC PROP.(CanMin, v 41, p 503)
Help on See Also: See Also: Links to other databases for Chlorbartonite :
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.FC.10





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