Penzhinite (original) (raw)

A valid IMA mineral species

About PenzhiniteHide

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Formula:

(Ag,Cu)4Au(S,Se)4

Specific Gravity:

8.35 (Calculated)

Name:

Named for the occurrence near the Penzhina River.

This page provides mineralogical data about Penzhinite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3156:7

2a4eaca9-5f96-4536-b5c4-a64eeccfea68

IMA Classification of PenzhiniteHide

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Type description reference:

Classification of PenzhiniteHide

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2.BA.75

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

2.16.18.1

2 : SULFIDES
16 : Miscellaneous

3.3.10

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

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 PenzhiniteHide

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Density:

8.35 g/cm3 (Calculated)

Optical Data of PenzhiniteHide

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Anisotropism:

evident - creamy yellow and greenish gray.

Colour in reflected light:

pale gray

Chemistry of PenzhiniteHide

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Mindat Formula:

(Ag,Cu)4Au(S,Se)4

Crystallography of PenzhiniteHide

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Class (H-M):

622 - Trapezohedral

Cell Parameters:

a = 13.779 Å, c = 16.980 Å

Unit Cell V:

2,791.92 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of PenzhiniteHide

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General Appearance of Type Material:

Intergrowths of elongate or platy grains, to 7 µm

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82766.

Associated Minerals at Type Locality:

Reference:

Bochek L I, Sandomirskaya S M, Chuvikina N G, Khvorostov V P (1984) A new selenium-containing sulfide of silver, gold, and copper - penginite (Ag,Cu)4Au(S,Se)4. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 113, issue 3, 356-360

Synonyms of PenzhiniteHide

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Other Language Names for PenzhiniteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

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 PenzhiniteHide

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References for PenzhiniteHide

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Reference List:

**Dunn, Pete J., Fleischer, Michael, Langley, Richard H., Shigley, James E., Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (7-8) 871-881 **pp.875-876

Localities for PenzhiniteHide

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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.