Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey

COŞANAY, Pelin; KIRAT, Ece; KIZILKANAT, Ceyda; KOÇ, Şükrü; Mutlu, Halim; ÇEVİK, Nihal

Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey

Pelin COŞANAY, (Ankara Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)

Ece KIRAT, (Ankara Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)

Nihal ÇEVİK, (Maden Tetkik ve Arama Genel Müdürlüğü, Ankara, Türkiye)

Ceyda KIZILKANAT, (Ankara Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)

Halim MUTLU, (Ankara Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)

Şükrü KOÇ (Ankara Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)

Turkish Journal of Earth Sciences

2 0

Yıl: 2017 Cilt: 26 Sayı: 3 Sayfa Aralığı: 206 - 226 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey

Öz:

We investigate rare earth element geochemistry, microthermometric characteristics, and radiogenic isotope systematics offluorites and stable isotope compositions of gangue minerals from several fluorite deposits in central Turkey. In the deposits, fluorite isthe main ore mineral and it is accompanied by quartz, calcite, and minor pyrite and barite. Veins are represented by three different fluoritetypes based on their color. Total REY contents of fluorites are highly variable, ranging from 24 to 693 ppm. LREE concentrations offluorites of all colors are similar but medium and heavy REE abundances of green fluorites are nearly an order of magnitude greater thanin both host rocks and purple and yellow fluorites, indicating multiple sources for crystallization. REEs show significant fractionation andpurple fluorites with relatively low HREE contents were likely precipitated at an earlier stage. As crystallization continued, green fluoriteswere nucleated because of ion exchange of LREEs with the host rock/minerals. Fluid inclusions yielded a wide range of homogenizationtemperatures from 86 °C to 292 °C and salinities from 0 to 20 wt.% NaCl equiv. The87 Sr/ 86 Sr ratios of fluorites, varying from 0.707627to 0.709380, overlap with the range of host rocks.143 Nd/ 144 Nd values suggest two populations: purple fluorites with less radiogenic andgreen fluorites with more radiogenic Nd isotope ratios. The Sr-Nd isotope systematics of Bayındır fluorites are consistent with that of theBayındır syenite, indicating that hydrothermal solutions progressively reacted with the host rock until equilibrium was established. δ 18 Ovalues of quartz are slightly higher than the magmatic range. δ 13 C and δ 18 O of calcites fall into the range of marine carbonates. δ 34 S valuesof barites indicate derivation from diverse reservoirs changing from marine to terrestrial sources. In contrast, sulfur in pyrites pointsto a magmatic origin. Therefore, is it suggested that magmatic fluids to some extent contributed to the precipitation of fluorite veins.

Anahtar Kelime:

Konular: Jeoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	COŞANAY P, KIRAT E, ÇEVİK N, KIZILKANAT C, Mutlu H, KOÇ Ş (2017). Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. , 206 - 226.
Chicago	COŞANAY Pelin,KIRAT Ece,ÇEVİK Nihal,KIZILKANAT Ceyda,Mutlu Halim,KOÇ Şükrü Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. (2017): 206 - 226.
MLA	COŞANAY Pelin,KIRAT Ece,ÇEVİK Nihal,KIZILKANAT Ceyda,Mutlu Halim,KOÇ Şükrü Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. , 2017, ss.206 - 226.
AMA	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. . 2017; 206 - 226.
Vancouver	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. . 2017; 206 - 226.
IEEE	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş "Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey." , ss.206 - 226, 2017.
ISNAD	COŞANAY, Pelin vd. "Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey". (2017), 206-226.

APA	COŞANAY P, KIRAT E, ÇEVİK N, KIZILKANAT C, Mutlu H, KOÇ Ş (2017). Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. Turkish Journal of Earth Sciences, 26(3), 206 - 226.
Chicago	COŞANAY Pelin,KIRAT Ece,ÇEVİK Nihal,KIZILKANAT Ceyda,Mutlu Halim,KOÇ Şükrü Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. Turkish Journal of Earth Sciences 26, no.3 (2017): 206 - 226.
MLA	COŞANAY Pelin,KIRAT Ece,ÇEVİK Nihal,KIZILKANAT Ceyda,Mutlu Halim,KOÇ Şükrü Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. Turkish Journal of Earth Sciences, vol.26, no.3, 2017, ss.206 - 226.
AMA	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. Turkish Journal of Earth Sciences. 2017; 26(3): 206 - 226.
Vancouver	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey. Turkish Journal of Earth Sciences. 2017; 26(3): 206 - 226.
IEEE	COŞANAY P,KIRAT E,ÇEVİK N,KIZILKANAT C,Mutlu H,KOÇ Ş "Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey." Turkish Journal of Earth Sciences, 26, ss.206 - 226, 2017.
ISNAD	COŞANAY, Pelin vd. "Geochemical, microthermometric, and isotopic constraints on the origin of fluorite deposits in central Anatolia, Turkey". Turkish Journal of Earth Sciences 26/3 (2017), 206-226.