The initial reconnaissance of geology performed by direct observation
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Tag: <span>F</span>
Visual and preliminary classification of rock samples collected on-site, prior to formal geochemical analysis
Minerals that occur in strings, strands, threads or fibers, such as asbestos
A terms used to describe a substance containing iron
A term that describes light-colored volcanic rocks containing feldspar
A group of common igneous rocks with constituent elements forming minerals that includes microcline, orthoclase, plagioclase and others
The calculated speed of drill bit advancing through rock or overburden
A report compiling qualified information used to determine the viability of developing a mineral deposit based on the extent of risk involved
A zone comprised of a series of smaller faults
The intersection of a fault with the earths surface