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Auriferous sand

Throughout the ages humans have used sand for many and the most varied uses. Some river sand, known as auriferous sand, contains native gold... [Pg.136]

The partitions in the bottom of the tyes are libs of two inches high and two and a half inches wide, held by screw-bolts and nuts, and are removed every now and then for the washing out of the concentrated auriferous said. This is done the more frequently in proportion as tbs sands are richer in gold. [Pg.275]

Occurrence and History.—Osmium occurs in nature alloyed with iridium as iridosmine or osmiridium, which is found as irregular flattened grains and, more rarely, as hexagonal prisms. It has a metallic lustre, tin-white to light steel-grey in appearance hardness 6-7 density 19-3 to 21-12.1 It occurs in Choco, South America in the Urals in auriferous and other drifts in New South Wales in auriferous beach-sands of North California and also in gold washings of certain Canadian rivers.1... [Pg.208]

ALIM — is a sand found in auriferous metals, out of which lead is extracted. [Pg.22]

See other pages where Auriferous sand is mentioned: [Pg.378]    [Pg.191]    [Pg.212]    [Pg.213]    [Pg.187]    [Pg.188]    [Pg.256]    [Pg.258]    [Pg.272]    [Pg.273]    [Pg.273]    [Pg.274]    [Pg.274]    [Pg.275]    [Pg.278]    [Pg.280]    [Pg.281]    [Pg.717]    [Pg.378]    [Pg.323]    [Pg.215]    [Pg.378]    [Pg.191]    [Pg.212]    [Pg.213]    [Pg.187]    [Pg.188]    [Pg.256]    [Pg.258]    [Pg.272]    [Pg.273]    [Pg.273]    [Pg.274]    [Pg.274]    [Pg.275]    [Pg.278]    [Pg.280]    [Pg.281]    [Pg.717]    [Pg.378]    [Pg.323]    [Pg.215]    [Pg.257]    [Pg.261]    [Pg.261]    [Pg.262]    [Pg.262]    [Pg.262]    [Pg.271]    [Pg.272]    [Pg.275]    [Pg.322]    [Pg.140]    [Pg.7]   
See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.111 ]



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