Treasurite Mineral Data

General Treasurite Information

Chemical Formula:

Ag7Pb6Bi15S32

Composition:

Molecular Weight = 6,159.10 gm

Silver 12.26 % Ag

Bismuth 50.90 % Bi

Lead 20.18 % Pb

Sulfur 16.66 % S

______

100.00 %

Empirical Formula:

Ag₇Pb₆Bi₁₅S₃₂

Environment:

In hydrothermal vein material.

IMA Status:

Approved IMA 1977

Locality:

Treasury mine, Geneva district, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Treasurite + Pronunciation

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Treasurite Crystallography

Axial Ratios:

a:b:c =6.4853:1:3.2622

Cell Dimensions:

a = 26.538, b = 4.092, c = 13.349, Z = 1; beta = 92.77° V = 1,447.92 Den(Calc)= 7.06

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: B2/m

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

By Intensity(I/I_o): 3.49(1), 3.22(0.8), 1.989(0.6),

Physical Properties of Treasurite

Color:

Black.

Density:

7.25

Diaphaneity:

Opaque

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Luster:

Metallic

Optical Properties of Treasurite

RL Anisotrophism:

Distinct to strong, in light gray to steel bluish black.

RL Color:

White.

Calculated Properties of Treasurite

Electron Density:

Bulk Density (Electron Density)=5.91 gm/cc
note: Specific Gravity of Treasurite =7.06 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Treasurite=1,382.96 barns/electron
U=PE_Treasurite x rElectron Density=8,173.51 barns/cc.

Radioactivity:

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

Treasurite Classification

Dana Class:

03.06.03.01 (03)Sulfides - Sulfosalts

(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.06.03)Dana Group

03.06.03.01 Treasurite Ag7Pb6Bi15S32 B2/m 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 Treasurite Information

References:

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

See Also:

Links to other databases for Treasurite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Treasurite

Ag7Pb6Bi15S32
Dana No: 03.06.03.01 Strunz No: 02.JB.40a
Locality:

Notes: