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Maletoyvayamite

Collectors Summary

Color bläulich im Auflicht
Streak color grau
Lustre Metallglanz
Cleavages gut nach {010} und {001}
Crystal System triklin, P1

Chemism

Chem­ical formula

Au3Se4Te6

Chem­ical com­po­si­tion

Gold, Selen, Tellur

Unit weight: 1672.369656 u; Number of atoms in the formula: 13

Info

Empirical formula:

Au3Se4Te6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Selenium

Se

18.89

4

30.77

78.9630000

315.8520000

Tellurium

Te

45.78

6

46.15

127.6030000

765.6180000

Gold

Au

35.33

3

23.08

196.9665520

590.8996560

Strunz 9th edi­tion incl. updates

2

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)

IMA sta­tus

anerkannt, CNMNC Newsletter No. 50 July 2019

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bläulich im Auflicht

Streak color

grau

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Bireflectance

stark

Anisotropism

stark, keine Innenreflexe

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

8.901(2)

Cell param­e­ters b (Å)

9.0451(14)

Cell param­e­ters c (Å)

9.265(4)

Cell param­e­ters a/b or c/a

0.984

Cell param­e­ters c/b

1.024

Cell param­e­ters α

97.66(3)°

Cell param­e­ters β

106.70(2)°

Cell param­e­ters γ

101.399(14)°

Z

2

Volumne (ų)

685.871

Kristall struc­ture

Synthetische Nachbildung bekannt

X-Ray Pow­der Diffrac­tion

8.650(25), 4.331(5), 2.911(100), 2.223(7), 2.180(6), 1.930(8), 1.901(8), 1.725(6)

XRD chart Maletoyvayamite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Density (g/cm³)

7.967 (calc.)

8.097 ( ρ calc. Mineralienatlas )

Cleav­ages

gut nach {010} und {001}

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Kamtschatka Oblast/Koryak Gebirge/Koryak Upland/Maletoyvayam Erzfeld/Gaching Vorkommen

Type mate­r­ial

Fersman Mineralogisches Museum, Russische Akademie der Wissenschaften, Leninskiy Prospekt 18-2, Moskau 119071, Russland

Col­lec­tion number of type mate­r­ial

53691

Preface

Name from

der Typlokalität

Author (Name, Year)

Tolstykh N.D., Tuhý M., Vymazalová A., Plášil J., Laufek F., Kasatkin A.V., Nestola F. (2020)

References

Tolstykh N.D., Tuhý M., Vymazalová A., Plášil J., Laufek F., Kasatkin A.V. and Nestola F. (2019) Maletoyvayamite, IMA 2019-021. CNMNC Newsletter No. 50; Mineralogical Magazine, 31, doi: 10.1180/mgm.2019.46

Other languages

German

Maletoyvayamit

English

Maletoyvayamite

IMA Number

IMA 2019-021

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Maletoyvayamit
Google-Bilder-Suche - search for: Maletoyvayamit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Maletoyvayamit

English pages

Mindat - search for: Maletoyvayamite
Webmineral - search for:Maletoyvayamite
Handbook-of-Mineralogy - search for: Maletoyvayamite
RRUFF - Raman, XRD and other mineral data - search for: Maletoyvayamite
RRUFF - References and PDF downloads - search for: Maletoyvayamite
American-Mineralogist-Crystal-Structure-Database - search for: Maletoyvayamite
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Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Maletoyvayamit
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Locations with GPS information