Vikingite Mineral Data

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General Vikingite Information

Chemical Formula:

Ag5Pb8Bi13S30

Composition:

Molecular Weight = 5,875.67 gm

Silver 9.18 % Ag

Bismuth 46.24 % Bi

Lead 28.21 % Pb

Sulfur 16.37 % S

______

100.00 %

Empirical Formula:

Ag₅Pb₈Bi₁₃S₃₀

Environment:

Associated with cosalite and as lamellae in galena in the gustavite-galena paragenesis.

IMA Status:

Approved IMA 1977

Locality:

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

Name Origin:

Named for the Vikings, who settled Greenland in the tenth century.

Name Pronunciation:

Vikingite + Pronunciation

Synonym:

ICSD 72805

PDF 43-690

Vikingite Image

Images:

Vikingite

Comments: Gray to bronze tarnished platy vikingite masses in quartz.
Location: Roche Balue, Vendee, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vikingite Crystallography

Axial Ratios:

a:b:c =0.5387:1:0.1628

Cell Dimensions:

a = 13.603, b = 25.248, c = 4.112, Z = 1; beta = 95.55° V = 1,405.64 Den(Calc)= 6.94

Crystal System:

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

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

By Intensity(I/I_o): 3.4(1), 1.75(0.9), 2.06(0.8),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Makovicky E , Mumme W G , Madsen I C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1992 (1992) p.454-468, The crystal structure of vikingite, Locality: La Roche Balue, France

Physical Properties of Vikingite

Color:

Gray.

Diaphaneity:

Opaque

Habit:

Lamellar - Thin laminae producing a lamellar structure.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Twinning Common - Crystals are usually twinned.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Optical Properties of Vikingite

RL Anisotrophism:

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

RL Color:

Galena-white.

RL Pleochroism:

Absent in air, absent to weak in oil.

Calculated Properties of Vikingite

Electron Density:

Bulk Density (Electron Density)=5.79 gm/cc
note: Specific Gravity of Vikingite =6.94 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Vikingite=1,437.66 barns/electron
U=PE_Vikingite x rElectron Density=8,320.60 barns/cc.

Radioactivity:

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

Vikingite Classification

Dana Class:

03.06.11.01 (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

(03.06.11)Dana Group

03.06.11.01 Vikingite Ag5Pb8Bi13S30 C 2/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 Vikingite Information

References:

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

See Also:

Links to other databases for Vikingite :
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 Vikingite Specimen Label here :

Vikingite

Ag5Pb8Bi13S30
Dana No: 03.06.11.01 Strunz No: 02.JB.40a
Locality:

Notes: