Iron stone

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'Sikhote-Alin' iron meteorite (1947) / Sikhote-Alin Mountains, Eastern Siberia Jewellery Shops, Jewellery Gemstone, Iron Meteorite, Geology Rocks, Pretty Rocks, Rocks Crystals, Beautiful Rocks, Mineral Stone, Minerals And Gemstones

The Sikhote-Alin meteorite is classified as a metal meteorite belongs to the chemical group and structure IIAB octahedrita thick. Comprises approximately 93% iron, 5.8% nickel, 0.42% cobalt, 0.46%...

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Banded Ironstone Formation - Pilbra Reigon Western Australia 3KG | Flickr - Photo Sharing! Geology Rocks, Sedimentary Rocks, Pretty Rocks, Cool Rocks, Colored Gemstones, Rocks Crystals, Beautiful Stones, Beautiful Rocks, Rock Collection

This Specimen came from the Pilbra Region of Western Australia and was formed during the Precambrian, approximately 2.5 to 2.7 BYA. Its chemical makeup consists of layers of hematite, magnetite and silica rich chert. This specimen also contains tigers eye, the metamorphic grade of the amphibole crocidolite, which is actually a form of asbestos. Its formation occurred when the photosynthetic cynobacteria began to oxidize the once anoxic atmosphere and oceans. The once soluble Fe 2+ began to…

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