The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye

Different geological processes such as weathering, diagenesis in hydrological systems, hydrothermal processes and contact metamorphism have been proposed to explain the genetic relationships of mordenite occurrences. The mineralogical and genetic analyses in this study are essential for identifying...

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Main Author: Hülya Ateş
Format: Article
Language:English
Published: General Directorate of Mineral Research and Exploration 2025-08-01
Series:Bulletin of the Mineral Research and Exploration
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Online Access:https://dergipark.org.tr/tr/download/article-file/4554817
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author Hülya Ateş
author_facet Hülya Ateş
author_sort Hülya Ateş
collection DOAJ
description Different geological processes such as weathering, diagenesis in hydrological systems, hydrothermal processes and contact metamorphism have been proposed to explain the genetic relationships of mordenite occurrences. The mineralogical and genetic analyses in this study are essential for identifying alteration minerals and assessing reaction processes. The Yıldızeli region, located south of the İzmir-Ankara-Erzincan suture zone and northeast of the Kırşehir block, is significant for its mineral deposits. This area consists of Paleocene-Miocene volcano-sedimentary units. Analyse results of selected zone mordenite samples from the Paleocene volcanic units that host mordenite mineralization are linked to low-grade metamorphism, particularly associated with zeolite facies (150-300 °C, 1-3 kbar and pH 4-7), following tectonically controlled hydrothermal alteration. The zeolitization process involves interacting fluids crucial for mobilizing alkali elements, withcompositional variations in mordenite indicating a continuous evolution toward equilibrium conditions under decreasing temperatures. The progression from mordenite to smectite, along with associated kaolinite occurrences, can be attributed to the hydrothermal circulation of alkaline waters and sodium extraction from underlying evaporites.
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spelling doaj-art-e5139fab1a884152987a8e6e7b53e86f2025-08-21T06:24:52ZengGeneral Directorate of Mineral Research and ExplorationBulletin of the Mineral Research and Exploration0026-45632025-08-01177177779010.19111/bulletinofmre.162756876The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), TürkiyeHülya Ateş0https://orcid.org/0000-0002-3202-9436General Directorate of Mineral Research and Exploration, Department of Mineral Exploration and Research, Ankara, TürkiyeDifferent geological processes such as weathering, diagenesis in hydrological systems, hydrothermal processes and contact metamorphism have been proposed to explain the genetic relationships of mordenite occurrences. The mineralogical and genetic analyses in this study are essential for identifying alteration minerals and assessing reaction processes. The Yıldızeli region, located south of the İzmir-Ankara-Erzincan suture zone and northeast of the Kırşehir block, is significant for its mineral deposits. This area consists of Paleocene-Miocene volcano-sedimentary units. Analyse results of selected zone mordenite samples from the Paleocene volcanic units that host mordenite mineralization are linked to low-grade metamorphism, particularly associated with zeolite facies (150-300 °C, 1-3 kbar and pH 4-7), following tectonically controlled hydrothermal alteration. The zeolitization process involves interacting fluids crucial for mobilizing alkali elements, withcompositional variations in mordenite indicating a continuous evolution toward equilibrium conditions under decreasing temperatures. The progression from mordenite to smectite, along with associated kaolinite occurrences, can be attributed to the hydrothermal circulation of alkaline waters and sodium extraction from underlying evaporites.https://dergipark.org.tr/tr/download/article-file/4554817mordenitemetamorphicdiagenesisweatheringhydrothermal.
spellingShingle Hülya Ateş
The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
Bulletin of the Mineral Research and Exploration
mordenite
metamorphic
diagenesis
weathering
hydrothermal.
title The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
title_full The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
title_fullStr The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
title_full_unstemmed The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
title_short The genesis of Mordenite occurrences: Diagenetic and hydrothermal alteration processes of Paleocene volcanics in Ilıca (Yıldızeli), Türkiye
title_sort genesis of mordenite occurrences diagenetic and hydrothermal alteration processes of paleocene volcanics in ilica yildizeli turkiye
topic mordenite
metamorphic
diagenesis
weathering
hydrothermal.
url https://dergipark.org.tr/tr/download/article-file/4554817
work_keys_str_mv AT hulyaates thegenesisofmordeniteoccurrencesdiageneticandhydrothermalalterationprocessesofpaleocenevolcanicsinilıcayıldızeliturkiye
AT hulyaates genesisofmordeniteoccurrencesdiageneticandhydrothermalalterationprocessesofpaleocenevolcanicsinilıcayıldızeliturkiye