Includes: Clays and other Earths; Mica; Asbestos; Crude Petroleum; Graphite.
Excludes: Gravel (FSC 5610); Sand (FSC 5610); Abrasives (FSC 5350); Refractory Clays (FSC 9350).
Notes: Only bulk material will be identified in this class. Minerals are naturally occurring substances with a characteristic chemical composition that can be expressed by a formula.
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