Maletoyvayamite, Au3Se4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F20%3A00000084" target="_blank" >RIV/00025798:_____/20:00000084 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/20:00533332 RIV/00216208:11310/20:10411530
Result on the web
<a href="https://www.cambridge.org/core/journals/mineralogical-magazine/article/abs/maletoyvayamite-au3se4te6-a-new-mineral-from-maletoyvayam-deposit-kamchatka-peninsula-russia/F20490FDE4B3B65374DDE3FF2F5F1D36" target="_blank" >https://www.cambridge.org/core/journals/mineralogical-magazine/article/abs/maletoyvayamite-au3se4te6-a-new-mineral-from-maletoyvayam-deposit-kamchatka-peninsula-russia/F20490FDE4B3B65374DDE3FF2F5F1D36</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1180/mgm.2019.81" target="_blank" >10.1180/mgm.2019.81</a>
Alternative languages
Result language
angličtina
Original language name
Maletoyvayamite, Au3Se4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia
Original language description
Maletoyvayamite, Au3Se4Te6, is a new mineral discovered in a heavy-mineral concentrate from the Gaching occurrence of theMaletoyvayam deposit, Kamchatka, Russia (60°19′51.87′′N, 164°46′25.65′′E). It forms anhedral grains (10 to 50 micrometer in size) and isfound in intergrowths with native gold (Au–Ag), Au tellurides (calaverite), unnamed phases (AuSe, Au2TeSe and Au oxide), native tellurium,sulfosalts (tennantite, tetrahedrite, goldfieldite and watanabeite) and supergene tripuhyite. Maletoyvayamite has a good cleavage on{010} and {001}. In plane-polarised light, maletoyvayamite is grey, has strong bireflectance (grey to bluish grey), and strong anisotropy;it exhibits no internal reflections. Reflectance values for maletoyvayamite in air (Rmin, Rmax in percent) are: 38.9, 39.1 at 470 nm; 39.3, 39.5 at546 nm; 39.3, 39.6 at 589 nm; and 39.4, 39.7 at 650 nm. Sixteen electron-microprobe analyses of maletoyvayamite gave an average composition:Au 34.46, Se 16.76, Te 47.23 and S 0.84, total 99.29 wt.percent, corresponding to the formula Au2.90(Se3.52S0.44)sigma3.96Te6.14 based on13 atoms; the average of eleven analyses on synthetic analogue is: Au 34.20, Se 19.68 and Te 45.42, total 99.30 wt.percent, correspondingto Au2.90Se4.16Te5.94. The calculated density is 7.98 g/cm3. The mineral is triclinic, space group P1, with a = 8.901(2), b = 9.0451(14),c = 9.265(4) angstroem, alfa = 97.66(3), beta = 106.70(2), gama = 101.399(14)°, V = 685.9(4) angstroem3 and Z = 2. The crystal structure of maletoyvayamite representsa unique structure type resembling a molecular structure. There are cube-like [Au6Se8Te12] clusters linked via van der Waalsinteractions. The structural identity of maletoyvayamite with the synthetic Au3Se4Te6 was confirmed by powder X-ray diffractionand Raman spectroscopy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
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Volume of the periodical
84
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
117-123
UT code for WoS article
000535539400010
EID of the result in the Scopus database
2-s2.0-85082104673