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A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone. Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source of chrysotile , a form of asbestos that can cause mesothelioma ...
Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. [2]
The following are three major hot and dry deserts in North America, all located in the Southwestern United States and Northern Mexico. [2]The Chihuahuan Desert is the largest hot desert in North America, located in the Southwestern United States and Northern Mexico.
Mineral dust is mainly constituted of the oxides (SiO 2, Al 2 O 3, FeO, Fe 2 O 3, CaO, and others) and carbonates (CaCO 3, MgCO 3) that constitute the Earth's crust.The composition of mineral dust, usually named in atmospheric sciences as mineralogy composition, is relevant for different physical and chemical processes in the atmosphere, for example, oxides with iron have an effect in the ...
Lithium aluminium silicate mineral spodumene. Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust. [1] [2] [3] In mineralogy, silica (silicon dioxide, SiO 2) is usually considered a silicate mineral rather than an ...
Agave deserti, a plant native to the Yuma Desert. Vegetation is dominated by the creosote bush (Larrea tridentata), which is widespread.The saguaro cactus (Carnegiea gigantea) and the ocotillo (Fouquieria splendens) are common on the bajadas, while many of the desert trees found are restricted to dry watercourses; these include paloverde (Parkinsonia), the desert willow (Chilopsis linearis ...
The Painted Desert was named by a Spanish expedition under Francisco Vázquez de Coronado during his 1540 quest to find the Seven Cities of Cibola. He located these some 40 miles (60 km) east of Petrified Forest National Park. Finding the cities were not made of gold, Coronado sent an expedition to find the Colorado River to gain supplies.
The Bisti/De-Na-Zin Wilderness is a 45,000-acre (18,000 ha) wilderness area located in San Juan County in the U.S. state of New Mexico. Established in 1984, the Wilderness is a desolate area of steeply eroded badlands managed by the Bureau of Land Management , except three parcels of private Navajo land within its boundaries. [ 1 ]