GEOCHEMISTRY: Bacterial Iron Deposits

IRON RAlVGE DEPOSITS, SOUTHEASTERN BRITISH COLUMBIA

alteration was ohserved along minor subsidiary faults in the northwest and northeast parts of Iron Range Mountain. The main Iron Range deposit consists of the segment of the ault containing the richest iron mineralization and underlies the northern half of the ridge which makes up Iron Range Mountain. This area extends northward onto the Grassy Mountain sheet (82FB). The area of m...

petrology and geochemistry of khar-bash (western shahrood) and its relation ship to iron mineralization

منطقه مورد مطالعه در 23 کیلومتری جنوب غرب شهرستاشاهرود قرار دارد که در نقشه 100000/1 شاهرود قرار گرفته است.ناحیه مورد مطالعه در تقسیمات ساختاری ایران بخشی از زون البرز شرقی است . در طی سنوزوئیک این زون به شدت تحت تأثیر فازهای کوهزایی آلپی قرار گرفته و فعالیت های آتشفشانی انوسن در قسمت های غربی آن دیده می شود . از نظر ترکیب سنگ شناسی منطقه مورد مطالعه متنوع و بیشتر شامل سنگ های رسوبی مانند : آ...

Geochemistry and Metallogenic Model of Carlin-Type Gold Deposits in Southwest Guizhou Province, China

Iron and bacterial virulence.

An invading pathogen must have the ability to multiply successfully within the hostile environment of the mammalian host to establish an infection. Bacterial and other pathogens produce a range of virulence determinants required for pathogenicity, many of which are regulated by environmental factors; level of iron is one of the important factors intimately connected to the synthesis of some of ...

Stable isotope geochemistry of carbonate minerals in supergene oxidation zones of Zn–Pb deposits

The O/O and C/C ratios of carbonate minerals formed by supergene oxidation of Zn–Pb deposits and submarine alteration of ancient slags were studied in order to constrain isotope fractionation factors for smithsonite, cerussite, and phosgenite, and to characterize conditions of nonsulfide ore formation. We present new isotope data of carbonate-hosted ores from the Iglesiente district (Sardinia, ...