Crystal-chemical effects of heat treatment on Cr- and V-bearing
Ca-dominant green tourmalines (fluor-uvite,
magnesio-lucchesiite)

J 2024

Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite)

BACIK, Peter; Petra KARDOSOVA; Jana FRIDRICHOVA; Olena RYBNIKOVA; Radek ŠKODA et. al.

Základní údaje

Originální název

Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite)

Autoři

BACIK, Peter; Petra KARDOSOVA; Jana FRIDRICHOVA; Olena RYBNIKOVA a Radek ŠKODA (203 Česká republika, domácí)

Vydání

Periodico di Mineralogia, Sapienza Universita Editrice, 2024, 0369-8963

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.200

Kód RIV

RIV/00216224:14310/24:00139001

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.13133/2239-1002/18524

UT WoS

001409457100001

EID Scopus

2-s2.0-85213216670

Klíčová slova anglicky

tourmaline; fluor-uvite; magnesio-lucchesiite; heat treatment; structural breakdown

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 3. 2025 16:10, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We present a detailed study of thermally driven changes in Ca-dominant tourmaline using Electron Probe Microanalysis (EPMA), powder X-ray diffraction (PXRD), Raman and optical absorption spectroscopy (OAS). The KEN samples from Kenya (5 crystal fragments) can be classified as fluor-uvite, while TAN from Tanzania (5 fragments) is dominantly magnesio-lucchesiite. Tourmaline samples were thermally treated in air at 700, 800, 900, and 1000 degrees C. Both sets were green with different hues, TAN with a bluer hue than KEN. After heating, no significant visual changes were observed in TAN samples until breakdown at 1000 degrees C. In KEN, after heating at 700 degrees C, the yellowish tint disappeared. Raman spectroscopy showed no significant changes after heating. Raman luminescence spectra revealed the sharp intensive band located at 680-684 nm, accompanied by a broad band between 690 and 900 nm in all samples heated up to 900 degrees C. OAS spectra look similar, with two major bands in blue and yellow to red regions. In TAN, the bands shift with the increasing Cr/V from 608 to 604 nm. In KEN with low Cr/V, the band is located between 613-617 nm. After heating at 1000 degrees C, both samples broke down with different associations: cordierite/indialite and glass from magnesio-lucchesiite, and cordierite/indialite, mullite-like phase, spinel and glass from fluor-uvite. There was a difference in volume between the samples; both samples expanded in volume, but the KEN sample expanded more with larger pores likely resulting from a higher proportion of volatile phase in this sample.

Citovat

BACIK, Peter; Petra KARDOSOVA; Jana FRIDRICHOVA; Olena RYBNIKOVA a Radek ŠKODA. Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite). Periodico di Mineralogia. Sapienza Universita Editrice, 2024, roč. 93, č. 3, s. 147-164. ISSN 0369-8963. Dostupné z: https://doi.org/10.13133/2239-1002/18524.

@article{2481897,
   author = {Bacik, Peter and Kardosova, Petra and Fridrichova, Jana and Rybnikova, Olena and Škoda, Radek},
   article_number = {3},
   doi = {https://doi.org/10.13133/2239-1002/18524},
   keywords = {tourmaline; fluor-uvite; magnesio-lucchesiite; heat treatment; structural breakdown},
   language = {eng},
   issn = {0369-8963},
   journal = {Periodico di Mineralogia},
   title = {Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite)},
   url = {https://doi.org/10.13133/2239-1002/18524},
   volume = {93},
   year = {2024}
}

TY  - JOUR
ID  - 2481897
AU  - Bacik, Peter - Kardosova, Petra - Fridrichova, Jana - Rybnikova, Olena - Škoda, Radek
PY  - 2024
TI  - Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite)
JF  - Periodico di Mineralogia
VL  - 93
IS  - 3
SP  - 147-164
EP  - 147-164
PB  - Sapienza Universita Editrice
SN  - 03698963
KW  - tourmaline
KW  - fluor-uvite
KW  - magnesio-lucchesiite
KW  - heat treatment
KW  - structural breakdown
UR  - https://doi.org/10.13133/2239-1002/18524
N2  - We present a detailed study of thermally driven changes in Ca-dominant tourmaline using Electron Probe Microanalysis (EPMA), powder X-ray diffraction (PXRD), Raman and optical absorption spectroscopy (OAS). The KEN samples from Kenya (5 crystal fragments) can be classified as fluor-uvite, while TAN from Tanzania (5 fragments) is dominantly magnesio-lucchesiite. Tourmaline samples were thermally treated in air at 700, 800, 900, and 1000 degrees C. Both sets were green with different hues, TAN with a bluer hue than KEN. After heating, no significant visual changes were observed in TAN samples until breakdown at 1000 degrees C. In KEN, after heating at 700 degrees C, the yellowish tint disappeared. Raman spectroscopy showed no significant changes after heating. Raman luminescence spectra revealed the sharp intensive band located at 680-684 nm, accompanied by a broad band between 690 and 900 nm in all samples heated up to 900 degrees C. OAS spectra look similar, with two major bands in blue and yellow to red regions. In TAN, the bands shift with the increasing Cr/V from 608 to 604 nm. In KEN with low Cr/V, the band is located between 613-617 nm. After heating at 1000 degrees C, both samples broke down with different associations: cordierite/indialite and glass from magnesio-lucchesiite, and cordierite/indialite, mullite-like phase, spinel and glass from fluor-uvite. There was a difference in volume between the samples; both samples expanded in volume, but the KEN sample expanded more with larger pores likely resulting from a higher proportion of volatile phase in this sample.
ER  -

BACIK, Peter; Petra KARDOSOVA; Jana FRIDRICHOVA; Olena RYBNIKOVA a Radek ŠKODA. Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite). \textit{Periodico di Mineralogia}. Sapienza Universita Editrice, 2024, roč.~93, č.~3, s.~147-164. ISSN~0369-8963. Dostupné z: https://doi.org/10.13133/2239-1002/18524.

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