Asked in Geology
How heavy is sand?
Asked in Authors, Poets, and Playwrights
What has the author Ralph Eugene Hunter written?
Ralph Eugene Hunter has written: 'Heavy minerals of the cretaceous and tertiary sands of extreme southern Illinois' -- subject(s): Sand, Heavy minerals 'Heavy minerals of the cretaceous and tertiary sands of extreme southern Illinois' -- subject(s): Sand, Heavy minerals 'Description of beds exposed at Fort Funston, Golden Gate National Recreation area, northwestern San Francisco Peninsula, California' -- subject(s): Geology, Stratigraphic, Stratigraphic Geology 'Sand and gravel resources of Boone County, Illinois' -- subject(s): Sand, Gravel, Geology 'Heavy minerals in sands along the Wabash River' -- subject(s): Sand, Heavy minerals
Asked in Weight and Mass, Metric System
Is milligram the best measurement for grain of sand?
Asked in South Korea
What are the environmental considerations unique to the Republic of Korea?
Asked in Chemistry
Is thorium found in yellow sand?
Thorium is typically found only in dark-colored heavy-mineral sands. Mineral bearing sand is classified by specific gravity as either light or heavy, with heavy mineral sands having a specific gravity of greater than 2.9. Many of the heavy mineral sands are dark colored and include ilmenite, rutile, magnetite, sphene, and garnet. Thorium is found primarily in the heavy mineral. monazite, which is ofter yellowish-brown or greenish- brown. A minor amount of thorium may also be in the heavy mineral, zircon, which is often white of yellowish in color. Because monazite and zircon are heavy minerals and are generally less abundant than ilmenite in a deposit, they are typically found in the zones of dark or black colored minerals. It is possible for thorium-bearing minerals to be distributed throughout a light-colored sand.