Yazarlar |
Doç. Dr. Zeynel BAŞIBÜYÜK
Kırşehir Ahi Evran Üniversitesi, Türkiye |
Dr. Öğr. Üyesi İlkay KAYDU AKBUDAK
Kırşehir Ahi Evran Üniversitesi, Türkiye |
Meltem Gürbüz
Mersin Üniversitesi, Türkiye |
Özet |
Ch-chalcedony is a green colored member of the quartz group of gem stones. The appearance of Ch-chalcedony is very similar to that of chrysoprase. Differently, Ch-chalcedonies have a chromium element instead of a nickel element as a trace element. Green quartz used in jewelery as a seal stone, in necklaces and rings and has been one of the most valuable quartz varieties throughout history, with its beautiful green color,more rare than other quartz varieties. The Ch-chalcedonies in the North Anatolian region is yellowish-white, brownish gray, light green to dark green in color ranging from several centimeters to one meter thick in veins and lenses in the Lower-Middle Eocene dolomitic limestones. Ch-chalcedonies are composed of fine-grained and occasionally fibrous needle-like quartz; in some examples, quartz is present together with cristobalite, tridimite and cuspidine minerals. According to geochemical investigations in Ch-chalcedonies, the main oxides that were determined are as follows: SiO2 was observed in the range of 95.86-97.81%, Fe2O3 was observed in the range of 0.61-0.91% and Cr2O3 was observed in the range of 0.125-0.168%. A trace element analysis of Ch-chalcedonies, shows their significant enrichments in: Ni, Mo, Cu, Mn, V, Cr and W, especially in the Cr (up to 705 ppm). The green color of the studied Cr-chalcedonies originates from the element chromium. Taking the possible reserves into account, the hardness, color, massive structures, mineralogical, petrographical and gemological features of Ch-chalcedonies in the region are evaluated together. It is determined that they are suitable for the production of jewelry and ornaments. |
Anahtar Kelimeler |
Ch-chalcedony, gemstone, green quartz, gemology, Turkey |
Makale Türü | Özgün Makale |
Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
Dergi Adı | Gospodarka Surowcami Mineralnymi - Mineral Resources Management |
Dergi ISSN | 0860-0953 |
Dergi Tarandığı Indeksler | SCI-Exp, SCOPUS, Curation, Essential Science Indicators, Pdf2xml, Pdf2xml, Reference Master, Sophia, Web Of Science Expanded |
Dergi Grubu | Q4 |
Makale Dili | İngilizce |
Basım Tarihi | 07-2023 |
Sayı | 1 |
Sayfalar | 77 / 92 |
Doi Numarası | 10.24425/gsm.2020.132551 |
Makale Linki | http://dx.doi.org/10.24425/gsm.2020.132551 |
Atıf Sayıları | |
WoS | 2 |
SCOPUS | 2 |
Google Scholar | 3 |