Having the shape of a kidney
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Category: <span>R</span>
Another term for the shape of the earth surface at a specific point
The layer of rocks, gravel, sand, soil and other matter between surface and bedrock
Ore whose minerals resist separation by initial chemical processes and require further chemical decomposition
The percentage of valuable minerals successfully recovered in ore
An initial exploration and ground survey of mineral lands
The closing and rehabilitation of a mine back to its original or natural state
An ore or arsenic, Arsenic monosulfide.
A heavy, dense, rare element of the platinum group. Symbol, Rh
Rare mineral and metallic elements such as niobium, yttrium, Lanthanum, cerium, praseodymium, neodymium, samarium, thulium, ytterbium, neodymium, dysprosium, gadolinium, promethium, scandium and lutetium