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Sand
Loose grains of rock, 0.0625–2.00 mm/0.0025–0.08 in in diameter, consisting most commonly of quartz, but owing their varying colour to mixtures of other minerals. Sand is used in cement-making, as an abrasive, in glass-making, and for other purposes.
Sands are classified into marine, freshwater, glacial, and terrestrial. Some ‘light’ soils contain up to 50% sand. Sands may eventually consolidate into sandstone.
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Cameroon Flag
The single star represents the unity of the former French and British territories. Effective date: 20 May 1975.
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