Getchellite Mineral Data

General Getchellite Information

Chemical Formula:

AsSbS3

Composition:

Molecular Weight = 293.81 gm

Antimony 42.27 % Sb

Arsenic 24.99 % As

Sulfur 32.74 % S

______

100.00 %

Empirical Formula:

As_0.98Sb_1.02S₃

Environment:

In an epithermal gold deposit formed in a narrow, steeply-dipping fault zone cutting interbedded Paleozoic (?) shales, argillites, and limestones, near a granodiorite intrusive.

IMA Status:

Approved IMA 1965

Locality:

At the Getchell mine, about 32 km northeast of Golconda, Humboldt Co., Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

For the locality.

Name Pronunciation:

Getchellite + Pronunciation

Synonym:

ICSD 42113

PDF 21-53

Getchellite Image

Images:

Getchellite

Comments: Bright red getchellite on matrix.
Location: Khaidarkan (Chaidarkan) Sb-Hg deposit, Fergana Valley, Osh District, Kyrgyzstan. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Getchellite Crystallography

Axial Ratios:

a:b:c =1.3235:1:1.122

Cell Dimensions:

a = 11.949, b = 9.028, c = 10.13, Z = 8; beta = 116.15° V = 980.93 Den(Calc)= 3.98

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 2.89(1), 4.44(0.8), 3.63(0.7),

Crystal Structure:

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

Kyono A , Kimata M , American Mineralogist , 89 (2004) p.696-700, Structural reinvestigation of getchellite As0.98Sb1.02S3.00

View Additional jPOWD Structure files for Getchellite
[1]

Physical Properties of Getchellite

Cleavage:

{001} Perfect

Color:

Blood red, Dark red, Purple red.

Density:

3.92

Diaphaneity:

Nearly opaque

Fracture:

Flexible - Flexible fragments.

Habit:

Micaceous - Platy texture with "flexible" plates.

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Vitreous - Pearly

Streak:

orange red

Optical Properties of Getchellite

Optical Data:

Biaxial (+), a=2.72, 2V(Meas)=<46. Dispersion r > v strong.

RL Anisotrophism:

Weak.

RL Color:

Dark blood red, tarnishing to green to purple iridescence..

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Getchellite in Air**
λ	R₁	R₂		∑ R₁(λ)	∑ R₂(λ)
400 nm	34.80	37.90

420 nm

34.20

37.40

440 nm

33.60

36.90

460 nm

32.70

36.00

480 nm

31.80

34.80

500 nm

30.70

33.50

520 nm

29.50

31.90

540 nm

28.10

30.60

560 nm

27.00

29.40

580 nm

26.20

28.60

600 nm

25.70

28.00

620 nm

25.20

27.40

640 nm

24.90

27.00

660 nm

24.50

26.80

680 nm

24.20

26.50

700 nm

23.80

26.10

**Calculated Relative Intensity Colors of Getchellite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	340%
R₁
R₂

Calculated Properties of Getchellite

Electron Density: Bulk Density (Electron Density)=3.59 gm/cc
note: Specific Gravity of Getchellite =3.98 gm/cc.

Fermion Index: Fermion Index = 0.0024556496
Boson Index = 0.9975443504

Photoelectric: PE_Getchellite= 157.76 barns/electron
U=PE_Getchellite x rElectron Density= 565.73 barns/cc.

Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Getchellite is Not Radioactive

Getchellite Classification

Dana Class: 02.11.01.02 (02)Sulfides - Including Selenides and Tellurides (02.11)where Am Bn Xp, with (m+n):p=2:3 (02.11.01)Orpiment Group

02.11.01.01 Orpiment As2S3 P 2₁/n 2/m

02.11.01.02 Getchellite AsSbS3 P 2₁/a 2/m

Strunz Class: 02.FA.35 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.FA -With As, (Sb), S

02.FA.35 Getchellite AsSbS3 P 2₁/a 2/m

Other Getchellite Information

References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin, v 89, p 696) OPTIC PROP.(AntBidBlaNic1)

See Also: Links to other databases for Getchellite :
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 - Philatelic Mineralogy
14 - QUT Mineral Atlas
15 - Ruff.Info

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Ask about Getchellite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Print or Cut-and-Paste your Getchellite Specimen Label here :

Getchellite

AsSbS3
Dana No: 02.11.01.02 Strunz No: 02.FA.35
Locality:

Notes: