Mendeley
TY  _  JOUR
ID  -   13980805193114
TI  -  Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran
JO  -  Iranian Journal of Geology
JA  -  ES
LA  -  fa
SN  -  1735-7128
AU  -  Alipour-Asll Masoud
AU  -   
AD  -  دانشگاه صنعتی شاهرود
AD  -  دانشگاه شاهرود
Y1  -  2021
PY  -  2021
VL  -  56
IS  -  
SP  -  1
EP  -  19
KW  -   Magnetite
KW  -   Apatite
KW  -   Rare earth elements
KW  -   Magmatic-hydrothermal
KW  -   
DO  -  
N2  -  The study area is located about 8 km south of Bandar Abbas in Hormozgan Province. This area is in the south of the Zagros folded zone and part of the Hormuz series. The late Precambrian-early Cambrian rocks comprise intercalations of rhyolite-rhyodacite lava and tuff, crystal ¬tuff, tuffaceous ¬shale, sandstone and evaporite layers. Iron mineralization along with apatite are found as dike, massive, vein-veinlets and disseminated forms in tuffaceous shale and crystalline tuff rock units. Based on iron oxides and apatite contents, mineralization can be divided into iron-oxides (mainly magnetite), iron oxides- apatite and apatite types. The main ore-forming minerals include magnetite, oligist, hematite, goethite and limonite, apatite, and gangue minerals are calcite, quartz and clay minerals. The Hormuz Island ores have a high concentration of rare earth elements (REE) and the total amount of REE in apatite-rich ores is up to 3%. The geochemical studies show that a strong positive correlation between P and REE. Comparison of the chondrite-normalized REE pattern of the Hormuz magnetite-apatite ores with those from the Bafq-Posht-e-Badam block and the Kiruna type iron ore deposits represent genetic similarity of mineralization. The homogenization temperature in the two-phased liquid and vapor (L+V) fluids in apatite minerals vary from 309 to 565°C (average 388°C), and salinity varies between 14.16 to 33.87 (20/80) wt.% NaCl. Finally, based on the field geology, mineralogy, geochemistry and fluid inclusion features, the Hormuz magnetite-apatite mineralization is classified in the Kiruna-type magnetite-apatite deposits group with magmatic-hydrothermal origin. 


UR  - rimag.ir/en/Article/15742
L1  - rimag.ir/en/Article/Download/15742
ER  -  
