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Maletoyvayamite
A valid IMA mineral species
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About Maletoyvayamite
Formula:
Au3Se4Te6
Lustre:
Metallic
Specific Gravity:
7.967 (Calculated)
Crystal System:
Triclinic
Name:
Named after the Maletoyvayam deposit in the Kamchatka peninsula, Russia, the type locality.
Unique combination of elements among the approved mineral species (however, compare 'Unnamed (Au-Telluride-Selenide)' and gachingite). Known synthetic analogue.
Unique Identifiers
Mindat ID:
53684
Long-form identifier:
mindat:1:1:53684:8
IMA Classification of Maletoyvayamite
Approved
Approval year:
2019
First published:
2020
Type description reference:
Tolstykh, Nadhezda D., Tuhý, Marek, Vymazalová, Anna, Plášil, Jakub, Laufek, František, Kasatkin, Anatoly V., Nestola, Fabrizio, Bobrova, Olga V. (2020) Maletoyvayamite, Au3Se4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia. Mineralogical Magazine, 84 (1) 117-123 doi:10.1180/mgm.2019.81
Classification of Maletoyvayamite
2.CB.45
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Mty | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Maletoyvayamite
Metallic
Transparency:
Opaque
Streak:
Gray (synthetic material)
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {010} and {001}
Good on {010} and {001}
Density:
7.967 g/cm3 (Calculated)
Comment:
Calculated value based on the empirical formula.
Optical Data of Maletoyvayamite
Anisotropism:
Strong
Bireflectance:
strong bireflectance (grey to bluish grey)
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 34.0% | 35.0% |
| 420nm | 36.9% | 37.5% |
| 440nm | 38.2% | 38.5% |
| 460nm | 38.8% | 39.0% |
| 470nm | 38.9% | 39.1% |
| 480nm | 38.9% | 39.1% |
| 500nm | 39.1% | 39.3% |
| 520nm | 39.1% | 39.4% |
| 540nm | 39.3% | 39.5% |
| 546nm | 39.3% | 39.5% |
| 560nm | 39.3% | 39.5% |
| 580nm | 39.3% | 39.6% |
| 589nm | 39.3% | 39.6% |
| 600nm | 39.4% | 39.7% |
| 620nm | 39.5% | 39.7% |
| 640nm | 39.5% | 39.8% |
| 650nm | 39.4% | 39.7% |
| 660nm | 39.3% | 39.5% |
| 680nm | 39.4% | 39.7% |
| 700nm | 39.2% | 39.5% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 39.8%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Bluish grey
Internal Reflections:
None
Chemistry of Maletoyvayamite
Mindat Formula:
Au3Se4Te6
Elements listed:
Crystallography of Maletoyvayamite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.901(1) Å, b = 9.045(1) Å, c = 9.265(4) Å
α = 97.66(3)°, β = 106.70(2)°, γ = 101.40(1)°
α = 97.66(3)°, β = 106.70(2)°, γ = 101.40(1)°
Ratio:
a:b:c = 0.984 : 1 : 1.024
Unit Cell V:
685.86 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.650 Å | (25) |
| 4.331 Å | (5) |
| 2.911 Å | (100) |
| 2.223 Å | (7) |
| 2.180 Å | (6) |
| 1.930 Å | (8) |
| 1.901 Å | (8) |
| 1.725 Å | (6) |
Reference:
Tolstykh, Nadhezda D., Tuhý, Marek, Vymazalová, Anna, Plášil, Jakub, Laufek, František, Kasatkin, Anatoly V., Nestola, Fabrizio, Bobrova, Olga V. (2020) Maletoyvayamite, Au3Se4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia. Mineralogical Magazine, 84 (1) 117-123 doi:10.1180/mgm.2019.81
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Maletoyvayamite
General Appearance of Type Material:
Anhedral grains (10 to 50 μm in size) .
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5369/1.
Associated Minerals at Type Locality:
Reference:
Tolstykh, Nadhezda D., Tuhý, Marek, Vymazalová, Anna, Plášil, Jakub, Laufek, František, Kasatkin, Anatoly V., Nestola, Fabrizio, Bobrova, Olga V. (2020) Maletoyvayamite, Au3Se4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia. Mineralogical Magazine, 84 (1) 117-123 doi:10.1180/mgm.2019.81
Synonyms of Maletoyvayamite
Other Language Names for Maletoyvayamite
Dutch:Maletoyvayamiet
German:Maletoyvayamit
Relationship of Maletoyvayamite to other Species
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 1 photo of Maletoyvayamite associated with Native Tellurium | Te |
| 1 photo of Maletoyvayamite associated with Tellurite | TeO2 |
| 1 photo of Maletoyvayamite associated with Native Selenium | Se |
| 1 photo of Maletoyvayamite associated with Emmonsite | Fe3+2(TeO3)3 · 2H2O |
| 1 photo of Maletoyvayamite associated with Quartz | SiO2 |
| 1 photo of Maletoyvayamite associated with Native Gold | Au |
Related Minerals - Strunz-mindat Grouping
| 2.CB. | Richardsite | Zn2CuGaS4 |
| 2.CB. | Okruginite | Cu2SnSe3 |
| 2.CB. | Hanswilkeite | KFeS2 |
| 2.CB. | Auroselenide | AuSe |
| 2.CB. | Ruizhongite | (Ag2◻)Pb3Ge2S8 |
| 2.CB. | Agmantinite | Ag2MnSnS4 |
| 2.CB. | Tolstykhite | Au3S4Te6 |
| 2.CB. | Gachingite | Au(Te1-xSex) |
| 2.CB.05a | Hawleyite | CdS |
| 2.CB.05 | 'UM1998-15-S:CuFeZn' | Cu2Fe3Zn5S10 |
| 2.CB.05a | Coloradoite | HgTe |
| 2.CB.05a | Metacinnabar | HgS |
| 2.CB.05a | Tiemannite | HgSe |
| 2.CB.05a | Sphalerite | ZnS |
| 2.CB.05b | Sakuraiite | (Cu,Zn,Fe)3(In,Sn)S4 |
| 2.CB.05c | Polhemusite | (Zn,Hg)S |
| 2.CB.05a | Rudashevskyite | (Fe,Zn)S |
| 2.CB.05a | Stilleite | ZnSe |
| 2.CB.05a | Ishiharaite | (Cu,Ga,Fe,In,Zn)S |
| 2.CB.07a | 'Unnamed (Cu-Mn-Sn Sulphide)' | Cu2MnSnS4 |
| 2.CB.07a | Shenzhuangite | NiFeS2 |
| 2.CB.10b | Talnakhite | Cu9(Fe,Ni)8S16 |
| 2.CB.10b | Haycockite | Cu4Fe5S8 |
| 2.CB.10a | Lenaite | AgFeS2 |
| 2.CB.10a | Gallite | CuGaS2 |
| 2.CB.10a | Roquesite | CuInS2 |
| 2.CB.10a | Eskebornite | CuFeSe2 |
| 2.CB.10a | 'UM1984-30-S:CuFeSn' | Cu2Fe2Sn3S7 |
| 2.CB.10c | Omariniite | Cu8Fe2ZnGe2S12 |
| 2.CB.10a | Chalcopyrite | CuFeS2 |
| 2.CB.10a | 'Unnamed (Cu-Zn-In Sulphide)' | CuZn2InS4 |
| 2.CB.10b | Mooihoekite | Cu9Fe9S16 |
| 2.CB.10a | Laforêtite | AgInS2 |
| 2.CB.10b | Putoranite | Cu1.1Fe1.2S2 |
| 2.CB.15a | Velikite | Cu2HgSnS4 |
| 2.CB.15c | 'UM2006-11-S:CuFeGeZn' | Cu8(Fe,Zn)3Ge2S12 (?) |
| 2.CB.15a | Hocartite | Ag2(Fe2+,Zn)SnS4 |
| 2.CB.15a | Kësterite | Cu2ZnSnS4 |
| 2.CB.15a | Pirquitasite | Ag2ZnSnS4 |
| 2.CB.15a | Stannite | Cu2FeSnS4 |
| 2.CB.15c | Stannoidite | Cu+6Cu2+2(Fe2+,Zn)3Sn2S12 |
| 2.CB.15b | Mohite | Cu2SnS3 |
| 2.CB.15a | Černýite | Cu2CdSnS4 |
| 2.CB.15a | Idaite | Cu5FeS6 |
| 2.CB.15a | Ferrokësterite | Cu2FeSnS4 |
| 2.CB.15a | Kuramite | Cu3SnS4 |
| 2.CB.17a v | 'Arsenic-bearing Renierite' | Cu11GeAsFe4S16 |
| 2.CB.20 | Mawsonite | Cu6Fe2SnS8 |
| 2.CB.20 | Chatkalite | Cu6FeSn2S8 |
| 2.CB.30 | 'Frieseite' | Ag2Fe5S8 (?) |
| 2.CB.30 | Nekrasovite | Cu26V2(Sn,As,Sb)6S32 |
| 2.CB.30 | 'Argyropyrite' | near Ag2Fe7S11 |
| 2.CB.30 | Maikainite | Cu20(Fe,Cu)6Mo2Ge6S32 |
| 2.CB.30 | Colusite | Cu13VAs3S16 |
| 2.CB.30 | Germanite | Cu13Fe2Ge2S16 |
| 2.CB.30 | Germanocolusite | Cu26V2(Ge,As)6S32 |
| 2.CB.30 | Stibiocolusite | Cu13V(Sb,Sn,As)3S16 |
| 2.CB.30 | Ovamboite | Cu20(Fe,Cu,Zn)6W2Ge6S32 |
| 2.CB.35a | Morozeviczite | (Pb,Fe)3Ge1-xS4 |
| 2.CB.35a | Renierite | (Cu+,Zn)11Fe4(Ge4+,As5+)2S16 |
| 2.CB.35a | Hemusite | Cu6SnMoS8 |
| 2.CB.35b | Catamarcaite | Cu6GeWS8 |
| 2.CB.35a | Vinciennite | Cu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16 |
| 2.CB.35a | Kiddcreekite | Cu6SnWS8 |
| 2.CB.35a | Polkovicite | (Fe,Pb)3(Ge,Fe)1-xS4 |
| 2.CB.40 | Lautite | CuAsS |
| 2.CB.42 | Lingbaoite | AgTe3 |
| 2.CB.45 | Cadmoselite | CdSe |
| 2.CB.45 | Rambergite | MnS |
| 2.CB.45 | Buseckite | (Fe,Zn,Mn)S |
| 2.CB.45 | Greenockite | CdS |
| 2.CB.45 | Wurtzite | (Zn,Fe)S |
| 2.CB.47 | Murchisite | Cr5S6 |
| 2.CB.50 | 'Zincselenide' | ZnSe |
| 2.CB.50 | Wassonite | TiS |
| 2.CB.52 | 'Dzhezkazganite' | ReMoCu2PbS6 ? |
| 2.CB.55b | Isocubanite | CuFe2S3 |
| 2.CB.55a | Cubanite | CuFe2S3 |
| 2.CB.60 | Raguinite | TlFeS2 |
| 2.CB.60 | Picotpaulite | TlFe2S3 |
| 2.CB.65 | Argentopyrite | AgFe2S3 |
| 2.CB.65 | Sternbergite | AgFe2S3 |
| 2.CB.70 | Sulvanite | Cu3VS4 |
| 2.CB.75 | Vulcanite | CuTe |
| 2.CB.80 | Empressite | AgTe |
| 2.CB.85 | Muthmannite | AuAgTe2 |
Other Information
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 Maletoyvayamite
mindat.org URL:
https://www.mindat.org/min-53684.html
Please feel free to link to this page.
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Search Engines:
External Links:
Mineral Dealers:
Ozernovskoe deposit, Karaginsky District, Koryak Okrug, Kamchatka Krai, Russia