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Chlorbartonite Mineral Data
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General Chlorbartonite Information
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 Chemical Formula: |
K6Fe24S26(Cl,S) |
| Composition: |
Molecular Weight = 2,453.28 gm |
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Potassium 9.72 % K |
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Iron 54.63 % Fe |
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Copper 0.52 % Cu |
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Sulfur 34.11 % S |
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Chlorine 1.01 % Cl |
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______ |
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100.00 % |
| Empirical Formula: |
K6.1Fe2+24Cu0.2S26.1Cl0.7 |
| Environment: |
Accessory mineral in a microcline-pectolite-sodalite-aegirine vein within feldspathic urtite. Included in sodalite and natrolite crystals. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Mount Koashva, Khibina Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Cl dominant analog of bartonite. |
| Synonym: |
IMA2000-048 |
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Chlorbartonite Image |
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Images:
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Chlorbartonite
Comments: Black grains of chlorbartonite in sodalite-natrolite aggregates.
Location: Mount Koashva, Khibina massif, Kola Peninsula, Russia.
Scale: Picture size 1 cm.
© Canadian Mineralogist |
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Chlorbartonite Crystallography
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| Axial Ratios: |
a:c = 1:1.98574 |
| Cell Dimensions: |
a = 10.381, c = 20.614, Z = 2; V = 2,221.47 Den(Calc)= 3.67 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm |
| 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), |
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Physical Properties of Chlorbartonite
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| Cleavage: |
None |
| Color: |
Brown, Black. |
| Density: |
3.7 - 3.74, Average = 3.72 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Habit: |
Inclusions - Generally found as inclusions in other minerals. |
| Hardness: |
4 - Fluorite |
| Luster: |
Sub Metallic |
| Magnetism: |
Weakly magnetic |
| Streak: |
black |
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Optical Properties of Chlorbartonite
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| RL Anisotrophism: |
None. |
| RL Color: |
Yellowish brown. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Chlorbartonite in Air
| λ |
R |
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∑ R(λ) |
| 420 nm |
9.80 |
 |
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| 440 nm |
9.90 |
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| 460 nm |
10.20 |
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| 480 nm |
10.80 |
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| 500 nm |
11.50 |
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| 520 nm |
12.30 |
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| 540 nm |
13.10 |
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| 560 nm |
14.00 |
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| 580 nm |
14.80 |
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| 600 nm |
15.60 |
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| 620 nm |
16.40 |
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| 640 nm |
17.10 |
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| 660 nm |
17.80 |
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| 680 nm |
18.40 |
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| 700 nm |
19.00 |
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| 720 nm |
19.50 |
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Calculated Relative Intensity Colors of Chlorbartonite in Air
Relative
Intensity |
0% |
90% |
100% |
180% |
270% |
360% |
450% |
540% |
630% |
720% |
810% |
850% |
| R |
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Calculated Properties of Chlorbartonite
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| Electron Density: |
Bulk Density (Electron Density)=3.52 gm/cc
note: Specific Gravity of Chlorbartonite =3.67 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEChlorbartonite = 19.68 barns/electron
U=PEChlorbartonite x relectron= 69.21 barns/cc.
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| Radioactivity: |
GRapi = 134.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Chlorbartonite per GRapi unit = 0.74 (%)
Estimated Radioactivity from Chlorbartonite  - barely detectable
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Chlorbartonite Classification
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| Dana Class: |
02.09.19.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.09)where Am Bn Xp, with (m+n):p=1:1 |
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(02.09.19)Bartonite Group |
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02.09.19.01 Bartonite K3Fe10S14 I 4/mmm 4/m 2/m 2/m |
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02.09.19.02 Chlorbartonite! K6Fe24S26(Cl,S) I 4/mmm 4/m 2/m 2/m |
| Strunz Class: |
02.FC.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FC -With Cl, Br, I (halide-sulfides) |
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02.FC.10 Bartonite K3Fe10S14 I 4/mmm 4/m 2/m 2/m |
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02.FC.10 Chlorbartonite! K6Fe24S26(Cl,S) I 4/mmm 4/m 2/m 2/m |
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Other Chlorbartonite Information
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| References: |
NAME( CanMin, v 41, p 503) PHYS. PROP.(CanMin, v 41, p 503) OPTIC PROP.(CanMin, v 41, p 503) |
| 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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Chlorbartonite
K6Fe24S26(Cl,S)
Dana No: 02.09.19.02 Strunz No: 02.FC.10
Locality:
Notes:
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