J 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.