Red ochre
3
Coin
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Ochre is a collection of oolitic, bean shaped, and kidney shaped aggregates, often in irregular flat blocks. Ochre is an oxide mineral belonging to the corundum group hematite, mainly containing iron oxide (Fe2O3). It is a collection of oolitic, bean shaped, and kidney shaped aggregates, often in irregular flat blocks. Dark brownish red or gray black, with cherry red or reddish brown stripes, some with metallic luster. There are many circular protrusions on one side, commonly known as "nail heads"; There are dimples of the same size on the other side corresponding to the protrusion. Weight, hard texture, and a layered cross-section after crushing. The air is faint and the taste is light.
