Hutchinsonite Mineral Data

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.

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 - DipyramidalH-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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Crystal Structure:

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Takeuchi Y , Ghose S , Nowacki W , Zeitschrift fur Kristallographie , 121 (1965) p.321-348, The crystal structure of hutchinsonite, (Tl,Pb)2As5S9, Locality: Lengenbach, Binnatal, Valais, Switzerland

Physical Properties of Hutchinsonite

Cleavage:

[100] Good

Color:

Cherry red, Pink, Black.

Density:

4.6

Diaphaniety:

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:

r_electron=4.05 gm/cc
note: r_{Hutchinsonite}=4.61 gm/cc.

Fermion Index

Fermion Index = 0.04461
Boson Index = 0.95539

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hutchinsonite is Not Radioactive

Hutchinsonite Classification

Dana Class:

3.8.6.1 (3)Sulfides - Sulfosalts

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

(3.8.6)Dana Group

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

Strunz Class:

II/E.13-45 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Thallium and Mercury, x = 4.0 - 1.6

II/E.13 - Livingstonite - Vaughanite series

II/E.13-10 Livingstonite HgSb4S8 A2/a 2/m

II/E.13-20 Grumiplucite! HgBi2S4 C 2/m 2/m

II/E.13-30 Simonite TlHgAs3S6 P 2₁/n 2/m

II/E.13-40 Vrbaite Tl4Hg3Sb2As8S20 C mca 2/m 2/m 2/m

II/E.13-42 Edenharterite TlPbAs3S6 F dd2 mm2

II/E.13-43 Jentschite! TlPbAs2SbS6 P 2₁/n 2/m

II/E.13-45 Hutchinsonite (Pb,Tl)2As5S9 P bca 2/m 2/m 2/m

II/E.13-50 Lorandite TlAsS2 P 2₁/a 2/m

II/E.13-60 Weissbergite TlSbS2 P1 1

II/E.13-70 Tvalchrelidzeite Hg12(Sb,As)8S15 P1 1

II/E.13-80 Vaughanite TlHgSb4S7 P1 ? 1

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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 - HyperPhysics 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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

Hutchinsonite

(Pb,Tl)2As5S9
Dana No: 3.8.6.1 Strunz No: II/E.13-45
Locality:

Notes: