Abstract
The Shaytor apatite-rich iron deposit is located in the Kashmar-Kerman tectonic zone in the central of the Iranian plat, which is an important polymetallic belt in Iran. The ore bodies are interbedded with the upper inferacaamberian calc-alkaline igneous rocks that show well-preserved porphyritic and volcaniclastic textures. The iron ores have massive, disseminated, and brecciated structures. Magnetite from the Shaytor deposit is low in Ti (TiO2 = up to 0.70 wt.%) and different ore types show similar rare earth element (REE) and trace element-normalized patterns with weak-to-moderate enrichment in light REE and negative Eu anomalies, indicating a common source and genesis. The similar REE patterns for the magnetite and volcanic basaltic host rocks suggest their close genetic linkage and support a magmatic origin for the deposit. The Shaytor deposit shows the typical characteristics of Kiruna-type deposits with regard to the mineral assemblages, ore texture and structure, and the apatite and magnetite geochemistry. We propose that the Kiruna-type Shaytor apatite-rich iron deposit was derived from Fe-P-rich melt through liquid immiscibility and the activity of hydrothermal fluids.
Highlights
Magnetite deposits that are related with magmatic rocks in volcano-plutonic belt occur worldwide range in age2
This paper aims to find of 1) detailed review of the geological characteristics of the iron deposits in the Shaytor area; 2) interpreting the iron metallogenesis; and 3) comparing these iron deposits in the Shytor basin with the Kiruna-type iron deposit in terms of geology, alteration and metallogenic processes
All major element compositions of minerals were obtained by electron microprobe analysis (EMPA) in Iran Mineral Processing Research Center (IMPRC)
Summary
Magnetite deposits that are related with magmatic rocks in volcano-plutonic belt occur worldwide range in age2. Central Iranian microplate consists, from east to west, of three major crustal domains: the Lut Block, Tabas Block and the Yazd Block. These Blocks are separated by a series of intersecting regional-scale faults (Figure 1(a) and Figure 1(b)). Recent work by [9] showed that the KKTZ represents an active continental-margin environment and does not show primary alkaline affinities attributable to intra-plate magmatism. It hosts the most of Bafq Fe mining district such as Chador Malu, Se Chahun, Choghart, Esfordi and Shaator. The Shaytor Fe deposite is located at in east of Kerman-Kashmar tectonic zone and Bafq metallogenic district (Figure 1(b))
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