Non-gem grade diamonds used for industrial purposes for their hardness, usually for cutting or as an abrasive
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Category: <span>B</span>
A soft, white mineral. Symbol, B
The use of sensory equipment to measure characteristics of the surrounding orebody of the borehole
A hole drilled and cored for the purpose of facilitating further exploring the underlying orebody
A small compass with sights and reflector
A soft monoclinic mineral, 4[Na2B4O5(OH)4.8H2O]
A trigonal mineral with perfect basal cleavage, Mg(OH)2
A telescoping extension pole
Iron stained sandstone, usually of Triassic age
An exceptionally rich grade of ore