Orthocuproplatinum, Pt3Cu, a new mineral from the Lubero region, North Kivu, Democratic Republic of the Congo

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000003" target="_blank" >RIV/00025798:_____/19:00000003 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/19:00509552
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs00710-019-00663-1" target="_blank" >https://link.springer.com/article/10.1007%2Fs00710-019-00663-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00710-019-00663-1" target="_blank" >10.1007/s00710-019-00663-1</a>

Result language
angličtina
Original language name
Orthocuproplatinum, Pt3Cu, a new mineral from the Lubero region, North Kivu, Democratic Republic of the Congo
Original language description
Orthocuproplatinum, Pt3Cu, is a newmineral from the Lubero region of North Kivu, Democratic Republic of the Congo. Themineral, which has a synthetic analogue, occurs as a 1.5-mm-long alluvial grain in a heavy-mineral concentrate, togetherwith the holotype specimen of kitagohaite, Pt7Cu. The grain of orthocuproplatinum has a rim of hongshiite, PtCu, andabundant inclusions of calcite. Opaque and metallic, orthocuproplatinum has a whitish colour in reflected light and slightlyperceptible anisotropy. The crystal structure of orthocuproplatinum is orthorhombic, space group Cmmm. Its unit-cellparameters: a = 7.681(1) angstroem; b = 5.4318(8) angstroem; c = 2.7502(4) angstroem; V = 114.74(3) angstroem3; Z = 2. The calculated density is17.866 g cm−3. The strongest diffraction lines are [d in angstroem(I)]: 2.337 (11), 2.236 (100), 2.217 (97), 1.932 (61), 1.920 (30),1.362 (36), 1.169 (24), 1.161 (23). The Vickers hardness is 243 kg mm−2 (VHN25), corresponding to a Mohs hardness of 4.The empirical formula of orthocuproplatinum, calculated from a mean value of 12 electron-probe microanalyses that gave12.9 wtpercent Cu and 87.3 wtpercent Pt, is Pt2.76Cu1.24 on the basis of 4 atoms.
Czech name
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Czech description
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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

Project
<a href="/en/project/GA18-15390S" target="_blank" >GA18-15390S: Experimental and mineralogical study of selected platinum-group chalcogenides and alloys</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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