Hutchinsonite Mineral Data

General Hutchinsonite Information

Chemical Formula:

(Pb,Tl)2As5S9

Composition:

Molecular Weight = 1,074.79 gm

Thallium 19.02 % Tl

Arsenic 34.85 % As

Lead 19.28 % Pb

Sulfur 26.85 % S

______

100.00 %

Empirical Formula:

PbTlAs₅S₉

Environment:

Hydrothermal origin.

IMA Status:

Valid Species (Pre-IMA) 1904

Locality:

Binnental, Valais, Switzerland. Link to MinDat.org Location Data.

Name Origin:

Named for Arthur Hitchinson (1866-1937), Professor of Mineralogy, Cambridge University, England.

Name Pronunciation:

Hutchinsonite + Pronunciation

Synonym:

ICSD 74765

PDF 42-1388

Hutchinsonite Image

Images:

Hutchinsonite

Comments: Dark, striated, prismatic crystal of hutchinsonite on matrix.
Location: Quiruvica, La Libertad Dept., Peru. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Hutchinsonite

Comments: Aggregate of red colored needles of hutchinsonite on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture width 6 mm.
© Walter Gabriel

Images:

Hutchinsonite

Comments: Transparent, striated, cherry-red crystal of hutchinsonite on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal size 1 mm.
© Walter Gabriel

Hutchinsonite Crystallography

Axial Ratios:

a:b:c =0.3055:1:0.2307

Cell Dimensions:

a = 10.78, b = 35.28, c = 8.14, Z = 8; V = 3,095.79 Den(Calc)= 4.61

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 2.74(1), 3.78(0.7), 3.05(0.6),

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Forms: ( 0 3 1) ( 4 5 0) ( 0 1 0) ( 0 2 1) ( 2 1 0) ( 4 3 0) ( 0 1 1) ( 1 1 0) ( 4 1 0) ( 1 0 0) ( 2 3 2)

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Physical Properties of Hutchinsonite

Cleavage:

{100} Good

Color:

Cherry red, Pink, Black.

Density:

4.6

Diaphaneity:

Subtranslucent to opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Sub Metallic

Streak:

red

Optical Properties of Hutchinsonite

Optical Data:

Biaxial (-), a=3.078, b=3.176, g=3.188, bire=0.1100, 2V(Calc)=36, 2V(Meas)=37.4. Dispersion marked to extreme, r < v.

RL Anisotrophism:

Strong.

Calculated Properties of Hutchinsonite

Electron Density:

Bulk Density (Electron Density)=4.05 gm/cc
note: Specific Gravity of Hutchinsonite =4.61 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Hutchinsonite}= 682.62 barns/electron
U=PE_{Hutchinsonite} x rElectron Density=2,763.93 barns/cc.

Radioactivity:

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

Hutchinsonite Classification

Dana Class:

03.08.06.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.06)Dana Group

03.08.06.01 Hutchinsonite (Pb,Tl)2As5S9 P bca 2/m 2/m 2/m

Strunz Class:

02.HD.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HD -With Tl

02.HD.45 Hutchinsonite (Pb,Tl)2As5S9 P bca 2/m 2/m 2/m

Other Hutchinsonite Information

References:

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

See Also:

Links to other databases for Hutchinsonite :
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 - HyperPhysics
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Hutchinsonite Specimen Label here :

Hutchinsonite

(Pb,Tl)2As5S9
Dana No: 03.08.06.01 Strunz No: 02.HD.45
Locality:

Notes: