Banded iron formation ~ Everything You Need to Know with Photos | Videos
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Banded iron formation ~ Everything You Need to Know with Photos | Videos
Banded iron formations (also known as banded ironstone formations or BIFs) are distinctive units of sedimentary rock that are almost always of Precambrian age. A typical BIF consists of repeated, thin layers (a few millimeters to a few centimeters in thickness) of silver to black iron oxides, either
Feb 4, 2014
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This is a beautiful “Banded Iron Formation” It is “Red Jasper” with the beautiful swirling bands of iron and hematite ore. Once this stone is polished, the bands can become as shiny as a mirror. ❤️ هذا "تكوين حديدي مخطط" جميل. إنه "يشب أحمر" بأشرطة دوامية جميلة من الحديد وخام الهيماتيت. بمجرد صقل هذا الحجر، تصبح هذه الأشرطة لامعة كالمرآة. ❤️ | Omar Nacer
This is a beautiful “Banded Iron Formation” It is “Red Jasper” with the beautiful swirling bands of iron and hematite ore. Once this stone is polished, the bands can become as shiny as a mirror. ❤️ هذا "تكوين حديدي مخطط" جميل. إنه "يشب أحمر" بأشرطة دوامية جميلة من الحديد وخام الهيماتيت. بمجرد صقل هذا الحجر، تصبح هذه الأشرطة لامعة كالمرآة. ❤️ | Omar Nacer
Facebook8 months ago
Top Gold-Bearing Banded Iron Formations (BIFs) of the World Some ancient BIFs don’t just host iron: they also trap gold where hydrothermal fluids altered iron-rich layers 1 Witwatersrand Basin, South Africa: world’s richest gold field 2 Yilgarn Craton, Western Australia: classic BIF-hosted lode gold 3 Lake Victoria Goldfields, Tanzania: sulfidized magnetite bands with gold 4 Zimbabwe Craton (Kwekwe, Gwanda) : pyrite-arsenopyrite-gold zones 5 Migori Belt, Kenya: BIF-hosted gold within folded Arch
Top Gold-Bearing Banded Iron Formations (BIFs) of the World Some ancient BIFs don’t just host iron: they also trap gold where hydrothermal fluids altered iron-rich layers 1 Witwatersrand Basin, South Africa: world’s richest gold field 2 Yilgarn Craton, Western Australia: classic BIF-hosted lode gold 3 Lake Victoria Goldfields, Tanzania: sulfidized magnetite bands with gold 4 Zimbabwe Craton (Kwekwe, Gwanda) : pyrite-arsenopyrite-gold zones 5 Migori Belt, Kenya: BIF-hosted gold within folded Arch
Facebook6 months ago
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