Iraqi Academic Scientific Journals - IASJ

Abstract. The aim of this study was to develop solution and suggestions for treatment some continuous deviation of the environmental variables of waste water unit in hila textile factory , which is determined by the supervisory of Babylon environmental institute.This study focused on deviation in colors ,suspended materials and the increase of dissolved …

Petrology and geochemistry of the banded iron formation (BIF…

Jun 1, 2011 · The BIF of Wadi Karim is composed essentially of magnetite, hematite and microcrystalline quartz, in addition to ankerite in the carbonate-bearing bands, while that of Um Anab is composed of magnetite and microcrystalline quartz. ... BIF deposition occurred through mixing of deep iron (and silica)-rich anoxic water with oxygenated surface ...

Understanding the Mechanisms for BIF | Konhauser-webpage

The mineralogy of the least metamorphosed BIF consists of chert, magnetite, hematite, carbonates (siderite, dolomite-ankerite), greenalite, stilpnomelane and riebeckite, but it is generally agreed that these minerals reflect both diagenetic and metamorphic overprinting: the primary iron minerals were most likely ferric hydroxide (e.g ...

Mineralogy and geochemistry of the hematite muscovite …

Aug 1, 2013 · The Hematite Mica Schist (HMS) of Malatya outcrops as a thrust slice between the Permian Malatya Metamorphics and the Eocene Maden Complex and probably as a portion of the Neoproterozoic-Paleozoic ...

Redalyc.Microporosity of BIF hosted massive hematite …

Mar 24, 2015 · Key words: BIF, porosity, massive hematite ore, direct reduction iron, reducibility. INTRODUCTION For many years, iron ores were classi ed only by theirchemicalcomposition. InadditiontotheFe 2 O 3 content, the quality of the ore was de ned by its contents of P 2 O 5, SiO 2,Al2 O 3, and loss on igni-

Genesis of High-Grade Iron Ores of the Archean Iron Ore …

Mar 1, 2008 · High-grade hematite ores of the Iron Ore Group in the Noamundi area, Jharkhand state, India, are hosted by a laterally extensive, 220-m-thick banded iron formation (BIF) in a folded greenstone belt succession of Paleoarchean age. Single orebodies, which are up to 3 km long along strike and several hundred meters wide, …

Photomicrographs of polished thin sections from Wiluna …

Isotropic microplaty hematite occurs in both high-grade ore ( Fig. 2A) and cherty BIF (Fig. 2B) in the northern part of the area. Martite grains are rarely associated with microplaty hematite and ...

A review on the Huoqiu banded iron formation (BIF

Dec 1, 2014 · A review on the Huoqiu banded iron formation (BIF), southeast margin of the North China Craton: Genesis of iron deposits and implications for exploration. ... and the D ore belt consisting of schist–marble–hematite–quartz formation. Based on a dataset from geological settings, geophysical and geochemical exploration, ore-forming ...

The chert (amorphous silica) and hematite bands …

This study demonstrates the great value of iron oxide chemistry in low-temperature systems. Hematite records elemental signatures of structural control, partial inheritance of pre-existing alteration, and allows chemical fingerprinting of multistage BIF-hosted ore. Mt. Whaleback and Mt. Tom Price are Western Australia's largest banded iron formation …

RESEARCH FOCUS: The life and times of banded iron formations

Dec 1, 2015 · The first challenge in pre-GOE BIF deposition relates to the transport of dissolved ferrous iron (Fe 2+) in the ocean.In contrast to today’s highly oxygenated oceans, dissolved ferrous iron transport would have been possible prior to the GOE, when Earth’s surface environments were generally considered to be anoxic (Holland, 2005).In …