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Řídkošil, Tomas, Skála, Roman, Johan, Zdeněk, Šrein, Vladimir (2001) Telluronevskite, Bi3TeSe2, a new mineral. European Journal of Mineralogy, 13 (1) 177-185 doi:10.1127/0935-1221/01/0013-0177

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Reference TypeJournal (article/letter/editorial)
TitleTelluronevskite, Bi3TeSe2, a new mineral
JournalEuropean Journal of Mineralogy
AuthorsŘídkošil, TomasAuthor
Skála, RomanAuthor
Johan, ZdeněkAuthor
Šrein, VladimirAuthor
Year2001 (January 31)Volume13
Page(s)177-185Issue1
PublisherSchweizerbart
Download URLhttps://rruff.info/rruff_1.0/uploads/EJM13_177.pdf+
DOIdoi:10.1127/0935-1221/01/0013-0177Search in ResearchGate
Classification
Not set
LoC
Not set
Mindat Ref. ID127946Long-form Identifiermindat:1:5:127946:1
GUID1d142bb1-8d33-4eef-8e51-c48bcd24a9e5
Full ReferenceŘídkošil, Tomas, Skála, Roman, Johan, Zdeněk, Šrein, Vladimir (2001) Telluronevskite, Bi3TeSe2, a new mineral. European Journal of Mineralogy, 13 (1) 177-185 doi:10.1127/0935-1221/01/0013-0177
Plain TextŘídkošil, Tomas, Skála, Roman, Johan, Zdeněk, Šrein, Vladimir (2001) Telluronevskite, Bi3TeSe2, a new mineral. European Journal of Mineralogy, 13 (1) 177-185 doi:10.1127/0935-1221/01/0013-0177
In(2001, January) European Journal of Mineralogy Vol. 13 (1) Schweizerbart
Abstract/NotesVihorlatite, ideally Bi24Se17Te4, is a new mineral species found in the region of volcanic Vihorlat Mountains in eastern Slovakia. It occurs in quartz-opal veinlets or secondary quartzites as anhedral to subhedral grains flattened parallel to (0001) up to 8 mm in diameter or aggregates thereof. The mineral is steel grey in colour and shows a metallic lustre. It displays a perfect cleavage along (0001) and shows deformation lamellae in mechanically bent crystals. In reflected light, it is white with a yellow tint, bireflectance is not perceptible in air, and anisotropy is moderate varying from light yellow-grey to dark grey. Maximum and minimum values of reflectance measured in air for 470, 546, 589 and 650 nm are (Rmax/Rmin in %): 52.9/49.9, 54.5/50.6, 54.6/51, 54.7/51.2. Vickers micro-hardness (VHN50 in kg/mm 2 ) varies in the range 49.2 - 91.7 with mean value of 65.9. Average chemical composition (in wt. %) Bi 71.5, Se 21.4, Te 8.1, S 0.8, Au 0.01, Ag 0.01, Sb 0.04, total 101.86, results in an empirical formula Bi21.9Se17.4Te4.1S1.6. The mineral is trigonal, with space group P3m1. The unit-cell dimensions refined from powder data are a = 4.2797(9) Å and c = 87.01(2) Å with c/a = 20.332(6) and V = 1380.2(6) Å3. For Z = 1, the calculated density is Dx = 7.850(3) g/cm3, measured density Dm = 8.0(2) g/cm3. The five strongest diffraction lines are [d (Å),I/I0, (hkl)]: 4.55, 55.4, (0.0.19); 3.116, 100, (1.0.15); 2.282, 75.5, (0.1.30); 1.934, 42.8, (1.1.19) (0.0.45); 1.767, 31.5, (0.2.15). The crystal structure of vihorlatite is derived from that of Bi8Se7 archetype. Vihorlatite belongs to the tetradymite group.

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Locality Pages

LocalityCitation Details
Quartzite outcrops, Poruba pod Vihorlatom, Michalovce District, Košice Region, Slovakia

Mineral Pages

MineralCitation Details
Telluronevskite

Mineral Occurrences

LocalityMineral(s)
Quartzite outcrops, Poruba pod Vihorlatom, Michalovce District, Košice Region, Slovakia Dolomite, Halloysite, Ilmenite, Kaolinite, Pyrite, Quartz, Telluronevskite


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