Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: implications for the age and origin of fluids

Bozkaya, Omer, Bozkaya, Gulcan, Uysal, I. Tonguc and Banks, David A. (2016) Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: implications for the age and origin of fluids. Ore Geology Reviews, 76 35-51. doi:10.1016/j.oregeorev.2016.01.001


Author Bozkaya, Omer
Bozkaya, Gulcan
Uysal, I. Tonguc
Banks, David A.
Title Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: implications for the age and origin of fluids
Journal name Ore Geology Reviews   Check publisher's open access policy
ISSN 0169-1368
1872-7360
Publication date 2016-07-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.oregeorev.2016.01.001
Open Access Status Not Open Access
Volume 76
Start page 35
End page 51
Total pages 17
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
A different approach to investigate the origin of fluids, temperature conditions, age of hydrothermal activity of mineralization in the Biga Peninsula, (Koru, Tesbihdere and Kumarlar) employed mineralogical (illite Kübler Index, b cell dimension, polytype) and geochemical (major, trace/REE, O–H stable isotope and Rb/Sr dating) methods. The Kübler Index (KI) values of illites indicate different temperature conditions, such as low temperature (high-grade diagenesis) for Koru deposit, and high temperature (anchizone) for the Tesbihdere and Kumarlar deposits. The textural, mineralogical and geochemical data from illites show that these have potential for estimating the age of hydrothermal activity and fluid characteristics. Both mineralogical (high grade diagenetic to anchizonal KI, 1M polytype, low d060 values) and geochemical (similar major and trace element composition to host-rocks, low octahedral Mg + Fe contents, oxygen and hydrogen isotope composition) data are compatible with commonly known hydrothermal illites. Stable isotope data of illites are well matched to similar data from fluid inclusions, which indicate mainly magmatic fluids. The Rb/Sr age (22.4 ± 2.3 Ma: latest Oligocene and lowest Miocene) of the illites coincides with plutonic intrusions that are the main instigators of hydrothermal activities related to the extensional tectonic regime in the Biga Peninsula. The mineralogical and geochemical data of illites have some important advantages with respect to the use of fluid inclusions in determining δD of hydrothermal fluids thereby leading to better understanding ore-forming hydrothermal conditions.
Keyword Base metal deposit
Hydrothermal alteration
Clay mineralogy and geochemistry
Biga Peninsula
Turkey
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
HERDC Pre-Audit
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 3 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 01 Mar 2016, 10:13:49 EST by System User on behalf of School of Mechanical and Mining Engineering