MILOTAITE, PdSbSe, A NEW PALLADIUM MINERAL SPECIES FROM PREDBORICE, CZECH REPUBLIC

Paar, Werner H.; Topa, Dan; Makovicky, Emil; Culetto, Franz J.

doi:10.2113/gscanmin.43.2.689

Cited by 17 publications

(5 citation statements)

References 9 publications

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“…dumbells), with bonding distance of 2.665 Å. A similar bonding distance of 2.636 Å in Sb-Se covalent pairs was observed in milotaite, PdSbSe (Paar et al, 2005). This is slightly longer than observed Ni-Se and Ni-Sb distances of 2.469(3) and 2.579(3) Å, respectively.…”

Section: Crystal Structuresupporting

confidence: 70%

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Kvačekite, NiSbSe, a new selenide mineral from Bukov, Czech Republic

Pauliš,

Dolníček,

Sejkora

et al. 2024

MinMag

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Kvačekite is a new mineral species discovered in a sample collected from the now abandoned Bukov uranium mine, western Moravia, Czech Republic. It occurs as rare anhedral grains, up to 15 μm in size, associated with nickeltyrrellite, tyrrellite, berzelianite, hakite-(Zn), hakite-(Cd), eucairite, clausthalite, and gold in calcite gangue. In reflected light, kvačekite is white with a faint yellowish shade; bireflectance, pleochroism and anisotropy are absent. Internal reflections were not observed. Reflectance values for the four COM wavelengths for kvačekite in air [R (%) (λ in nm)] are: 54.9 (470); 53.5 (546); 52.6 (589); and 52.2 (650). The empirical formula, based on electron-microprobe analyses, is (Ni0.95Cu0.04Co0.03)Σ1.02Sb1.00(Se0.97S0.01)Σ0.98. The ideal formula is NiSbSe, which requires (in wt.

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Section: Crystal Structuresupporting

confidence: 70%

“…Ullmanite shows a Ni-Sb distance of 2.563 Å (Foecker and Jeitschko, 2001) which can be compared with the Ni-Sb separations in the kvačekite structure (2.579(3) Å). In addition to ullmannite, the most closely related mineral species is milotaite, PdSbSe (Paar et al, 2005).…”

Section: Crystal Structurementioning

confidence: 99%

Kvačekite, NiSbSe, a new selenide mineral from Bukov, Czech Republic

Pauliš,

Dolníček,

Sejkora

et al. 2024

MinMag

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“…A diagram of Hg vs. Cd contents in cadmoselite, tiemannite, and greenockite are presented in Figure 22. 4.2.9. Chaméanite, (Cu,Fe) 4 As(Se,S) 4 Chaméanite is a very rare selenide known only at several localities worldwide (Chaméane [77], Tumiñico [79], and Předbořice [41]). At Příbram, it was identified in a sample carrying Tl, Cu, Fe, and Sb selenides.…”

Section: Cadmoselite Cdse and Greenockite Cdsmentioning

confidence: 99%

Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)

2017

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Selenium mineralization in the Příbram uranium and base-metal district (Central Bohemia, Czech Republic) bound to uraninite occurrences in calcite hydrothermal veins is extremely diverse. The selenides antimonselite, athabascaite, bellidoite, berzelianite, brodtkorbite, bukovite, bytízite, cadmoselite, chaméanite, clausthalite, crookesite, dzharkenite, eskebornite, eucairite, ferroselite, giraudite, hakite, klockmannite, naumannite, permingeatite, příbramite, sabatierite, tiemannite, and umangite were found here, including two new mineral phases: Hg-Cu-Sb and Cu-As selenides. Those selenides-and in some cases their sulphidic equivalents-are characterized using wavelength-dispersive spectroscopy, reflected light, powder X-ray diffraction, single crystal X-ray diffraction, Raman spectroscopy, and electron backscatter diffraction. The selenide mineralization in the Příbram uranium district is bound to the border of the carbonate-uraninite and subsequent carbonate-sulphidic stages. Selenides crystallized there at temperatures near 100 • C in the neutral-to-weakly-alkaline environment from solutions with high oxygen fugacity and a high Se 2 /S 2 fugacity ratio.

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“…This synthetic Ni 2 SbTe 2 phase was used to determine physical properties, to measure the reflectance, to collect powder data, and to refine cell parameters. A similar approach had also been used in the case of milotaite (Paar et al 2005). The synthetic analogue of vavřínite was prepared using the silica glass tube method.…”

Section: Methodsmentioning

confidence: 99%

VAVRINITE, Ni2SbTe2, A NEW MINERAL SPECIES FROM THE KUNRATICE Cu Ni SULFIDE DEPOSIT, CZECH REPUBLIC

Laufek¹,

Drábek²,

Skála³

et al. 2007

The Canadian Mineralogist

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Vavřínite, Ni 2 SbTe 2 , is a new mineral species discovered at the Kunratice Cu-Ni sulfide deposit, Czech Republic. It was observed in one polished section, where it occurs as a lath-shaped grain 20 mm long and as one additional small inclusion. Vavřínite occurs at grain boundaries between grains of pentlandite. The other associated minerals are pyrrhotite, chalcopyrite, violarite, Ni-bearing pyrite, melonite, sperrylite and altaite. In plane-polarized reflected light, the synthetic analogue of vavřínite is white-cream, weakly bireflectant, and weakly pleochroic from pale light brown to pale brown. Between crossed polars, it is anisotropic, without internal reflections. Values of reflectance in the range 400 -700 nm are tabulated. Synthetic Ni 2 SbTe 2 has a silver grey color and metallic luster. It is brittle with a perfect {0001} cleavage. The Vickers microhardness (VHN 10 ) for synthetic Ni 2 SbTe 2 is 92 kg/mm 2 (range 73.4-111.7), which corresponds to a Mohs hardness of ~2. The calculated and measured densities are 7.88 and 7.79 g/cm 3 , respectively. The average result of three wavelength-dispersion electron-microprobe analyses of vavřínite is Ni 22.92, Fe 1.29, Pd 1.29, Sb 23.65, Bi 0.33, Te 49.95, total 99.43 wt.%, which corresponds to (Ni 1.93 Fe 0.11 Pd 0.06 ) S2.10 (Sb 0.96 Bi 0.01 ) S0.97 Te 1.93 ; synthetic Ni 2 SbTe 2 gave Ni 23.85, Sb 24.33, Te 51.77, total 99.95 wt.%, corresponding Ni 2.01 Sb 0.99 Te 2.00 (basis: five atoms per formula unit). The mineral is hexagonal, space group P6 3 /mmc, with a 3.9090 (2), c 15.6820(9) Å, V 207.52(2) Å 3 and Z = 2. The strongest lines in the powder-diffraction pattern of the synthetic analogue [d in Å(I)(hkl)] are: 3.. The mineral is named in honor of Ivan Vavřín in recognition of his investigations of tellurium minerals and significant contributions to research on Cu-Ni sulfide deposits.soMMaire La vavřínite, Ni 2 SbTe 2 , est une nouvelle espèce minérale découverte dans le gisement de sulfures à Cu-Ni de Kunratice, en République Tchèque. Nous avons trouvé un seul cristal lamellaire 20 mm de long dans une lame polie et aussi une petite inclusion. La vavřínite est située entre des grains de pentlandite. Lui sont associés pyrrhotite, chalcopyrite, violarite, pyrite nickelifère, mélonite, sperrylite et altaïte. En lumière réfléchie polarisée parallèle, l'analogue synthétique de la vavřínite est blanc-crème, § E-mail address: laufek@cgu.cz 1214 tHe CanaDian MineraLogistfaiblement biréflectant, et faiblement pléochroïque, allant de brun pâle à brun. Entre nicols croisés, elle est anisotrope, sans réflexions internes. Nous présentons les valeurs de réflectance entre 400 et 700 nm. Le Ni 2 SbTe 2 synthétique a une couleur gris argent et un éclat métallique. Il est cassant, avec un clivage {0001} parfait. La microdureté de Vickers (VHN 10 ) pour l'analogue synthétique est 92 kg/mm 2 (valeurs dans l'intervalle 73.4-111.7), ce qui correspond à une dureté de Mohs d'environ 2. Les valeurs calculée et mesurée de la densité sont 7.88 et 7.79 g/cm 3 , respectivement. Le rés...

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MILOTAITE, PdSbSe, A NEW PALLADIUM MINERAL SPECIES FROM PREDBORICE, CZECH REPUBLIC

Cited by 17 publications

References 9 publications

Kvačekite, NiSbSe, a new selenide mineral from Bukov, Czech Republic

Kvačekite, NiSbSe, a new selenide mineral from Bukov, Czech Republic

Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)

VAVRINITE, Ni2SbTe2, A NEW MINERAL SPECIES FROM THE KUNRATICE Cu Ni SULFIDE DEPOSIT, CZECH REPUBLIC

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