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Ironstone
Ironstone is a sedimentary rock, either deposited directly as a ferruginous sediment or created by chemical replacement, that contains a substantial proportion of an iron ore compound from which iron (Fe) can be smelted commercially.
Colors It Comes In - Brown, Red, Grey, Black
Fracture Pattern - Uneven, Cracks
Shape - Variety of shapes and sizes
Luster - Shiny, Waxy
Texture - Medium to coarse-grained
Where It Can Be Found - Like many of the world’s top-quality gemstones, ironstone is found primarily in Australia — specifically in the Australian Outback.
Hardness On The Mohs Scale - 5 To 5.5 Out Of 10
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