Bartonite Mineral Data

General Bartonite Information

Chemical Formula:

K3Fe10S14

Composition:

Molecular Weight = 1,124.69 gm

Potassium 10.43 % K

Iron 49.66 % Fe

Sulfur 39.92 % S

______

100.00 %

Empirical Formula:

K₃Fe²⁺₁₀S₁₄

Environment:

In clots with other sulfides and silicates in an alkalic diatreme which intruded Franciscan rocks.

IMA Status:

Approved IMA 1981

Locality:

Coyote Peak diatreme, 16 miles SW of Orick, Humboldt Co. California. Link to MinDat.org Location Data.

Name Origin:

For Paul B. Barton, Jr., sulfide petrologist with the U.S. Geological Society.

Name Pronunciation:

Bartonite + Pronunciation

Synonym:

ICSD 100746

PDF 35-476

Bartonite Image

Images:

Bartonite

Comments: B&W polished section image showing an irregular remnant of bright pyrrhotite (py) in a matrix of bartonite (ba) veined by silicates. (AmMin, v66:369).
Location: Found in a mafic, alkalic diatreme at Coyote Peak, Humboldt County, California, USA. Scale: Picture Size 1.3? x 1.94 mm.
© American Mineralogist

Bartonite Crystallography

Axial Ratios:

a:c = 1:1.9787

Cell Dimensions:

a = 10.424, c = 20.626, Z = 4; V = 2,241.22 Den(Calc)= 3.33

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

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

By Intensity(I/I_o): 2.998(1), 5.99(0.77), 1.833(0.4),

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

Evans H T , Clark J R , American Mineralogist , 66 (1981) p.376-384, The crystal structure of bartonite, a potassium iron sulfide, and its, relationship to pentlandite and djerfisherite

Physical Properties of Bartonite

Cleavage:

{112} Distinct

Color:

Black brown.

Density:

3.305

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Streak:

black

Optical Properties of Bartonite

RL Color:

Yellowish green-gray to yellowish green-brown.

RL Pleochroism:

Very weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Bartonite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	21.70	18.30
420 nm	16.70	14.40
440 nm	17.70	17.20
460 nm	18.40	18.60
480 nm	19.40	19.50
500 nm	19.70	20.60
520 nm	20.30	21.40
540 nm	20.90	21.80
560 nm	21.90	22.70
580 nm	22.70	23.20
600 nm	23.40	23.70
620 nm	23.90	24.30
640 nm	24.70	25.10
660 nm	25.00	25.50
680 nm	25.20	26.10
700 nm	26.40	26.50

**Calculated Relative Intensity Colors of Bartonite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	450%	490%
R₁
R₂

Calculated Properties of Bartonite

Electron Density:

Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Bartonite =3.33 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Bartonite= 18.21 barns/electron
U=PE_Bartonite x r_electron= 58.34 barns/cc.

Radioactivity:

GRapi = 144.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Bartonite per GRapi unit = 0.69 (%)

Estimated Radioactivity from Bartonite - barely detectable

Bartonite Classification

Dana Class:

02.09.19.01 (02)Sulfides - Including Selenides and Tellurides

(02.09)where Am Bn Xp, with (m+n):p=1:1

(02.09.19)Bartonite Group

02.09.19.01 Bartonite K3Fe10S14 I 4/mmm 4/m 2/m 2/m

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

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 Bartonite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Bartonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Bartonite using:

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

Visit our Advertisers for Bartonite :

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

Ask about Bartonite 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 Bartonite Specimen Label here :

Bartonite

K3Fe10S14
Dana No: 02.09.19.01 Strunz No: 02.FC.10
Locality:

Notes: