Gustavite Mineral Data

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General Gustavite Information

Chemical Formula:

PbAgBi3S6 (?)

Composition:

Molecular Weight = 1,134.41 gm

Silver 9.51 % Ag

Bismuth 55.27 % Bi

Lead 18.27 % Pb

Sulfur 16.96 % S

______

100.00 %

Empirical Formula:

PbAgBi₃S₆

Environment:

A rare mineral of hydrothermal origin, also found in pegmatites.

IMA Status:

Approved IMA 1970

Locality:

Ivigtut, Greenland. Link to MinDat.org Location Data.

Name Origin:

Named for Gustav Hageman (1842-1916), Danish chemical engineer.

Name Pronunciation:

Gustavite + Pronunciation

Synonym:

ICSD 300265

PDF 46-1367

Gustavite Image

Images:

Gustavite

Comments: Gray metallic gustavite in matrix.
Location: South Mountain, Owyhee County, Idaho, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gustavite Crystallography

Axial Ratios:

a:b:c =0.6946:1:0.211

Cell Dimensions:

a = 13.51, b = 19.449, c = 4.105, Z = 4; V = 1,078.61 Den(Calc)= 6.99

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bbmm

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

By Intensity(I/I_o): 2.895(1), 2.996(1), 3.363(1),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Bente K , Engel M , Steins M , Zeitschrift fur Kristallographie , 205 (1993) p.327-328, Crystal structure of lead silver tribismuth sulfide, PbAgBi3S6, Locality: synthetic, Note: natural gustavite exhibits ordered Bi/Ag

Physical Properties of Gustavite

Cleavage:

{???} Distinct, {???} Distinct

Color:

Steel gray.

Density:

7.01

Diaphaneity:

Opaque

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Streak:

gray

Optical Properties of Gustavite

RL Anisotrophism:

Weak in air, distinct in oil, bluish black to grayish white.

RL Color:

White to grayish white.

RL Pleochroism:

White to gray.

Calculated Properties of Gustavite

Electron Density:

Bulk Density (Electron Density)=5.84 gm/cc
note: Specific Gravity of Gustavite =6.99 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Gustavite=1,426.78 barns/electron
U=PE_Gustavite x rElectron Density=8,334.41 barns/cc.

Radioactivity:

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

Gustavite Classification

Dana Class:

03.04.15.03 (03)Sulfides - Sulfosalts

(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.04.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi)

03.04.15.01 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m

03.04.15.02 Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m

03.04.15.03 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m

03.04.15.04 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m

03.04.15.05 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m

03.04.15.06 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m

03.04.15.07 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m

03.04.15.08 Fizelyite Pb14Ag5Sb21S48(?) P 2₁/n 2/m

Strunz Class:

02.JB.40a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.40a Fizelyite Pb14Ag5Sb21S48(?) P 2₁/n 2/m

02.JB.40a Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m

02.JB.40a Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m

02.JB.40a Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m

02.JB.40a Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m

02.JB.40a Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m

02.JB.40a Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m

02.JB.40a Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m

02.JB.40a Xilingolite Pb3Bi2S6 C 2/m 2/m

02.JB.40a Treasurite Ag7Pb6Bi15S32 B2/m 2/m

02.JB.40a Vikingite Ag5Pb8Bi13S30 C 2/m 2/m

Other Gustavite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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

Gustavite

PbAgBi3S6 (?)
Dana No: 03.04.15.03 Strunz No: 02.JB.40a
Locality:

Notes: