Murunskite (original) (raw)

A valid IMA mineral species

About MurunskiteHide

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Colour:

Copper-red to pinchbeck-brown

Specific Gravity:

3.86 (Calculated)

Crystal System:

Tetragonal

Name:

Named for the Murunskii alkalic massif, the type locality.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2814:7

664e38b7-19bd-4b00-9ff2-2e7d2bf2ca72

IMA Classification of MurunskiteHide

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Type description reference:

Classification of MurunskiteHide

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2.BD.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
D : With Hg, Tl

2.5.5.3

2 : SULFIDES
5 : AmBnXp, with (m+n):p = 3:2

3.0.6

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis

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 MurunskiteHide

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Colour:

Copper-red to pinchbeck-brown

Comment:

iridescent a fresh surface oxidizes to a sooty black film

Hardness:

VHN10=92 - 123 kg/mm2 - Vickers

Cleavage:

Imperfect/Fair
Imperfect.

Density:

3.86 g/cm3 (Calculated)

Optical Data of MurunskiteHide

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Anisotropism:

Moderate, gray to brownish gray with a bluish tint.

Colour in reflected light:

grayish orange-cream

Chemistry of MurunskiteHide

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Mindat Formula:

K2(Cu,Fe)4S4

Crystallography of MurunskiteHide

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Crystal System:

Tetragonal

Class (H-M):

4/m m m _(_4/_m_2/_m_2/m ) - Ditetragonal Dipyramidal

Cell Parameters:

a = 3.8460(10) Å, c = 13.308(3) Å

Unit Cell V:

196.85 ų (Calculated from Unit Cell)

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 MurunskiteHide

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General Appearance of Type Material:

very tiny grains, to 1 µm, and in aggregates

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia (81604)

Geological Setting of Type Material:

rocks that have undergone intensive potassium metasomatism

Associated Minerals at Type Locality:

Reference:

Dobrovolskaya M G, Tsepin A I, Evstigneeva T L, Vyal'sov L N, Zaozerina A O (1981) Kurunskite, K2Cu3FeS4 a new sulfide of potassium, copper, and iron. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 110: 468-473.

Synonyms of MurunskiteHide

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Other Language Names for MurunskiteHide

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Varieties of MurunskiteHide

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Relationship of Murunskite to other SpeciesHide

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Other Members of this group:

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 MurunskiteHide

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References for MurunskiteHide

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Localities for MurunskiteHide

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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.