| 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-chalsedonies 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 occa-sionally fibrous needle-like quartz; in some examples, quartz is present together with cristobalite, tri-dimite 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%, Fe2 O3 was observed in the range of 0.61–0.91% and Cr2 O3 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 | Gemology | Gemstone | Green quartz | 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-Expanded |
| Dergi Grubu | Q4 |
| Makale Dili | İngilizce |
| Basım Tarihi | 07-2020 |
| Cilt No | 36 |
| 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 | |
| SCOPUS | 3 |
| Google Scholar | 5 |
