Vikingite (original) (raw)

A valid IMA mineral species

About VikingiteHide

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Specific Gravity:

7.19 (Calculated)

Crystal System:

Monoclinic

Name:

Named after the Vikings, early explorers of Greenland, where the species was found.

This page provides mineralogical data about Vikingite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:4179:5

669a9447-40b2-4086-b7e8-b0147869f17e

IMA Classification of VikingiteHide

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Type description reference:

Classification of VikingiteHide

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2.JB.40a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb

3.6.11.1

3 : SULFOSALTS
6 : 2 < ø < 2.49

5.7.32

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of VikingiteHide

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Hardness:

VHN50=185 kg/mm2 - Vickers

Density:

7.19 g/cm3 (Calculated)

Optical Data of VikingiteHide

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Anisotropism:

Distinct to strong, in pale gray to steel-bluish-black.

Colour in reflected light:

galena-white

Comments:

Absent in air, absent to weak in oil.

Chemistry of VikingiteHide

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Mindat Formula:

Ag5Pb8Bi13S30

Crystallography of VikingiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 13.60 Å, b = 4.11 Å, c = 25.24 Å
β = 95.55°

Ratio:

a:b:c = 3.309 : 1 : 6.141

Unit Cell V:

1,404.20 ų (Calculated from Unit Cell)

Twinning:

On {010}; twin lamellae parallel to [001] commonly observed in thin section.

Comment:

Apparently only subcell.

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of VikingiteHide

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General Appearance of Type Material:

Lamellar grains, averaging 0.5 mm.

Place of Conservation of Type Material:

University of Copenhagen, Copenhagen, Denmark, 1973.236.
National Museum of Natural History, Washington, D.C., USA, 136172.

Associated Minerals at Type Locality:

Reference:

Makovicky, E. and Karup-Møller, S. (1977) Chemistry and crystallography of the lillianite homologous series. II. Definition of new minerals eskimoite, vikingite, ourayite and treasurite. Redefinition of schirmerite and new data on the lillianite-gustavite solid-solution series. Neues Jahrbuch für Mineralogie, Abhandlungen: 131: 56-82.

Synonyms of VikingiteHide

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Other Language Names for VikingiteHide

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Relationship of Vikingite to other SpeciesHide

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Other Members of this group:

Structurally related to group(s):

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for VikingiteHide

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References for VikingiteHide

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Reference List:

Moëlo, Yves, Marcoux, Eric, Makovicky, Emil, Karup-Møller, Sven, Legendre, Olivier (1987) Homologues de la lillianite (gustavite, vikingite, heyrovskyite riche en Ag et Bi..) de l'indice à W-As-(Pb,Bi,Ag) de La Roche-Balue (Loire Atlantique, France) Bulletin de Minéralogie, 110 (1) 43-64 doi:10.3406/bulmi.1987.8025

Localities for VikingiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.