Stibarsen Mineral Data

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General Stibarsen Information

Chemical Formula:

SbAs

Composition:

Molecular Weight = 196.67 gm

Antimony 61.91 % Sb

Arsenic 38.09 % As

______

100.00 %

Empirical Formula:

SbAs

Environment:

Hydrothermal veins and granite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1941

Locality:

Varuträsk pegmatite, Boliden, Skellefteå, Västerbotten, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for its composition of antimony (Latin=stibium) and arsenic.

Name Pronunciation:

Stibarsen + Pronunciation

Synonym:

Allemontite

ICSD 42576

PDF 31-80

Stibarsen Image

Images:

Stibarsen

Comments: Massive Stibarsen.
Location: Bohemia, Czechoslovakia. Scale: 3 x 2 cm.
© John Veevaert

Images:

Stibarsen Vaughanite Paakkonenite

Comments: B&W image of vaughanite (Va) aggregate surrounding a fibrous bundle of paakkonenite (Pfi) and associated with stibarsen (Star) and realgar (Re). Oil immersion. (CanMin, v53:369).
Location: Rare primary constituent of the Golden Giant orebody of the Hemlo gold deposit, Hemlo, Ontario, Canada. Scale: See Image.
© Canadian Mineralogist

Stibarsen Crystallography

Axial Ratios:

a:c = 1:2.68656

Cell Dimensions:

a = 4.02, c = 10.8, Z = 3; V = 151.15 Den(Calc)= 6.48

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 2.92(1), 2.01(0.7), 2.13(0.6),

Crystal Structure:

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Bayless P , American Mineralogist , 76 (1991) p.257-265, Crystal chemistry and crystallography of some minerals in the tetradymite group

Physical Properties of Stibarsen

Cleavage:

{???} Perfect

Color:

White, Gray, Grayish white, Reddish white.

Density:

6.1 - 6.2, Average = 6.15

Diaphaneity:

Opaque

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

3-4 - Calcite-Fluorite

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

grayish black

Optical Properties of Stibarsen

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Stibarsen in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	64.80	67.80
420 nm	65.00	68.00
440 nm	65.20	68.20
460 nm	64.80	67.90
480 nm	64.00	67.20
500 nm	63.00	66.80
520 nm	62.30	66.60
540 nm	61.60	66.30
560 nm	61.20	66.00
580 nm	60.80	65.90
600 nm	60.50	65.80
620 nm	60.30	65.70
640 nm	60.10	65.80
660 nm	60.00	66.20
680 nm	59.80	66.30
700 nm	59.60	66.40

**Calculated Relative Intensity Colors of Stibarsen in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	150%
R₁
R₂

Calculated Properties of Stibarsen

Electron Density:

Bulk Density (Electron Density)=5.54 gm/cc
note: Specific Gravity of Stibarsen =6.48 gm/cc.

Fermion Index:

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_Stibarsen= 241.81 barns/electron
U=PE_Stibarsen x rElectron Density=1,338.51 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stibarsen is Not Radioactive

Stibarsen Classification

Dana Class:

01.03.01.03 (01)Native Elements

(01.03)with semi-metallic and non-metallic elements

(01.03.01)Arsenic group

01.03.01.01 Arsenic As R 3m 3 2/m

01.03.01.02 Antimony Sb R 3m 3 2/m

01.03.01.03 Stibarsen SbAs R 3m 3 2/m

01.03.01.04 Bismuth Bi R 3m 3 2/m

01.03.01.05 Stistaite SnSb R 3m 3 2/m

Strunz Class:

01.CA.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.C - Metalloids and Nonmetals

01.CA -Arsenic group elements

01.CA.05 Bismuth Bi R 3m 3 2/m

01.CA.05 Antimony Sb R 3m 3 2/m

01.CA.05 Arsenic As R 3m 3 2/m

01.CA.05 Stibarsen SbAs R 3m 3 2/m

Other Stibarsen Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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Stibarsen

SbAs
Dana No: 01.03.01.03 Strunz No: 01.CA.05
Locality:

Notes: