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Bartonite

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About BartoniteHide

Formula:
K6Fe20S26S
Colour:
Blackish-brown
Lustre:
Sub-Metallic
Hardness:
Specific Gravity:
3.305
Crystal System:
Tetragonal
Name:
After Paul Booth Barton, Jr. (1930– ), ore petrologist with the U.S. Geological Survey.
Structurally related to djerfisherite and pentlandite.

See also chlorbartonite.



Classification of BartoniteHide

Approved
2.FC.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
C : With Cl, Br, I (halide-sulfides)
2.9.19.1

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.0.5

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis

Physical Properties of BartoniteHide

Sub-Metallic
Transparency:
Opaque
Colour:
Blackish-brown
Streak:
Black
Hardness:
3½ on Mohs scale
Hardness:
VHN15=94 - 120 kg/mm2 - Vickers
Cleavage:
Distinct/Good
Distinct on {112}
Fracture:
Conchoidal
Density:
3.305 g/cm3 (Measured)    3.286 g/cm3 (Calculated)

Optical Data of BartoniteHide

Type:
Anisotropic
Reflectivity:
400nmR1=21.7%R2= 18.3%
420nmR1=16.7%R2= 14.4%
440nmR1=17.7%R2= 17.2%
460nmR1=18.4%R2= 18.6%
480nmR1=19.4%R2= 19.5%
500nmR1=19.7%R2= 20.6%
520nmR1=20.3%R2= 21.4%
540nmR1=20.9%R2= 21.8%
560nmR1=21.9%R2= 22.7%
580nmR1=22.7%R2= 23.2%
600nmR1=23.4%R2= 23.7%
620nmR1=23.9%R2= 24.3%
640nmR1=24.7%R2= 25.1%
660nmR1=25.0%R2= 25.5%
680nmR1=25.2%R2= 26.1%
700nmR1=26.4%R2= 26.5%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 26.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Yellowish green-gray to yellowish green-brown
Pleochroism:
Weak

Chemical Properties of BartoniteHide

Formula:
K6Fe20S26S
Common Impurities:
Na,Cu,Ni,Co,Cl

Crystallography of BartoniteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Setting:
I4/mmm
Cell Parameters:
a = 10.424(1) Å, c = 20.626(1) Å
Ratio:
a:c = 1 : 1.979
Unit Cell V:
2,241.22 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Anhedral masses in pyrrhotite to 5x50 microns

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.31 (27)
5.99 (77)
3.139 (27)
2.998 (100)
2.379 (25)
1.841 (25)
1.833 (40)
Comments:
Coyote Peak, California, USA.

Type Occurrence of BartoniteHide

General Appearance of Type Material:
Anhedral masses, intergrown with pyrrhotite; rare elongated single crystals, to 50 μm long.
Place of Conservation of Type Material:
Smithsonian
Geological Setting of Type Material:
Alkalic diatreme
Associated Minerals at Type Locality:

Synonyms of BartoniteHide

Other Language Names for BartoniteHide

German:Bartonit
Spanish:Bartonita
Traditional Chinese:巴硫鐵鉀礦
褐硫鐵鉀礦

Relationship of Bartonite to other SpeciesHide

Structurally related to group(s):
Djerfisherite GroupStructurally related to bartonite and pentlandite.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Coyoteite2 photos of Bartonite associated with Coyoteite on mindat.org.
Pyrrhotite1 photo of Bartonite associated with Pyrrhotite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.FC.Demicheleite-(I)BiSIOrth. mmm (2/m 2/m 2/m) : Pnma
2.FC.05DjerfisheriteK6(Fe,Cu,Ni)25S26ClIso. m3m (4/m 3 2/m) : Pm3m
2.FC.05ThalfenisiteTl6(Fe,Ni,Cu)25S26Cl
2.FC.05Owensite(Ba,Pb)6(Cu,Fe,Ni)25S27Iso. m3m (4/m 3 2/m) : Pm3m
2.FC.10ChlorbartoniteK6Fe24S26(Cl,S)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.FC.15aArzakiteHg2+3S2(Br,Cl)2Mon.
2.FC.15aCorderoiteHg2+3S2Cl2Iso. m3 (2/m 3)
2.FC.15cGrechishcheviteHg2+3S2(Br,Cl,I)2Tet.
2.FC.15aLavrentieviteHg2+3S2(Cl,Br)2Mon.
2.FC.15dRadtkeiteHg2+3S2IClMon. 2/m : B2/m
2.FC.15bKenhsuiteHg2+3S2Cl2Orth.
2.FC.20aCapgaronniteAgHgClSOrth.
2.FC.20cPerrouditeHg5Ag4S5(I,Br)2Cl2Orth. 2 2 2 : P21 21 2
2.FC.20bIltisiteHgAgS(Cl,Br)Hex.
2.FC.25Demicheleite-(Br)BiSBrOrth. mmm (2/m 2/m 2/m) : Pnma
2.FC.25Demicheleite-(Cl)BiSClOrth. mmm (2/m 2/m 2/m) : Pnma

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.0.1ErditeNaFeS2 · 2H2OMon. 2/m : B2/b
3.0.2CoyoteiteNaFe3S5 · 2H2OTric.
3.0.3ChvilevaiteNa(Cu,Fe,Zn)2S4Trig. 3m : R3m
3.0.4RasvumiteKFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
3.0.6MurunskiteK2(Cu,Fe)4S4Tet.

Other InformationHide

Notes:
Weakly magnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BartoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fleischer, M. (1973), New mineral names. Cyclowollastonite: American Mineralogist: 58: 560.
American Mineralogist (1979): 64: 241.
Czamanske, G.K., R.C. Erd, B.F. Leonard & J.R. Clark (1981), Bartonite, a new potassium iron sulfide mineral: American Mineralogist: 66: 369-375.
Evans, H.T. & J.R. Clark (1981), The crystal structure of bartonite, a potassium iron sulfide and its relationship to pentlandite and djerfisherite: American Mineralogist: 66: 376-384.
Azarova, Yu.V., Krinov, D.I., Sokolova, M.N. (2006): Structural and genetic relationship of djerfisherite and bartonite and problem of isomorphism in the system djerfisherite-"Cu-djerfisherite"-bartonite. New Data on Minerals, 41, 98-107.

Internet Links for BartoniteHide

Localities for BartoniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Denmark
 
  • Greenland
    • Kujalleq
      • Narsaq
        • Ilímaussaq complex
          • Kuannersuit Plateau (Kvanefjeld)
Friis, H. (2016). First occurrence of moskvinite-(Y) in the Ilímaussaq alkaline complex, South Greenland–implications for rare-earth element mobility. Mineralogical Magazine, 80(1), 31-41.
Italy
 
  • Umbria
    • Terni Province
      • San Venanzo
Stoppa, F., Sharygin, V.V., and Cundari, A. (1997): Mineralogy and Petrology 61, 27-45.; ; Sharygin, V. V., Pekov, I. V., Zubkova, N. V., Khomyakov, A. P., Stoppa, F., & Pushcharovsky, D. Y. (2013). Umbrianite, K7Na2Ca2 [Al3Si10O29] F2Cl2, a new mineral species from melilitolite of the Pian di Celle volcano, Umbria, Italy. European Journal of Mineralogy, 25(4), 655-669.
Russia
 
  • Northern Region
    • Murmanskaya Oblast'
      • Lovozero Massif
        • Kedykverpakhk Mt
          • Karnasurt mine (Kedyk area)
Mineralogical Record: 36(4): 397-416.
USA (TL)
 
  • California
    • Humboldt Co.
      • Coastal Range
Czamanske, G.K., R.C. Erd, B.F. Leonard & J.R. Clark (1981), Bartonite, a new potassium iron sulfide mineral: American Mineralogist: 66: 369-375; Fleischer, M. (1979) New Mineral Names. Bartonite. American Mineralogist: 64: 241; Evans, H.T. and J.R. Clark (1981) The crystal structure of bartonite, a potassium iron sulfide and its relationship to pentlandite and djerfisherite. American Mineralogist: 66: 376-384; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 67; American Mineralogist: (1983) 68: 245-254.
  • Nevada
    • Nye Co.
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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