2021
Optical and Luminescence Spectroscopy of Varicolored Gem Spinel from Mogok, Myanmar and Lu.c Yen, Vietnam
MALÍČKOVÁ, Iveta; Peter BAČÍK; Jana FRIDRICHOVÁ; Radek HANUS; Ľudmila ILLÁŠOVÁ et. al.Základní údaje
Originální název
Optical and Luminescence Spectroscopy of Varicolored Gem Spinel from Mogok, Myanmar and Lu.c Yen, Vietnam
Autoři
MALÍČKOVÁ, Iveta; Peter BAČÍK (garant); Jana FRIDRICHOVÁ; Radek HANUS; Ľudmila ILLÁŠOVÁ; Ján ŠTUBŇA; Daniel FURKA; Samuel FURKA a Radek ŠKODA (203 Česká republika, domácí)
Vydání
Minerals, MDPI, 2021, 2075-163X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10504 Mineralogy
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.818
Kód RIV
RIV/00216224:14310/21:00121491
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000622847100001
EID Scopus
2-s2.0-85100471374
Klíčová slova anglicky
spinel; optical absorption spectroscopy; Raman spectroscopy; luminescence; chromophore; luminophore
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 4. 2021 14:01, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
We studied 12 crystal fragments of natural spinel from Mogok, Myanmar and Lu.c Yen, Vietnam. All samples were crystal fragments of various shapes and sizes and several of them had gemological quality. Studied samples are enriched in Cr, V, Fe2+, Fe3+, Zn, which are responsible for its resulting color. They could be divided into groups of V-Cr spinels with Cr 0.001-0.006 apfu, V 0.001-0.004 apfu, and Fe spinels containing increased Fe2+ (0.001-0.017 apfu) and Fe3+ (0.004-0.012 apfu). Some samples show luminescence bands at 677, 685, 697, 710, and 718 nm assigned to Cr3+. The optical absorption spectra of spinels were divided into two groups of V-Cr and Fe spinels based on the dominant element acting on optical spectra. The optical spectrum of V-Cr spinels can be divided into two zones (1) 420-550 nm (V3+ and Cr3+ absorption); (2) 640-1000 nm (Fe2+-Fe3+ charge transfer). The optical absorption spectra of Fe spinels can also be divided into two zones (1) 410-650 nm (Fe2+-Fe3+ charge transfer) and (2) 770-1000 nm (Fe2+). This variation in chromophores results in the differences in color: V-Cr spinels are pink to red, Fe spinels are in shades of blue as well as yellow and pink.