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The Atacama Desert of South America is unique among the deserts of the world in its great abundance of saline minerals. Sodium nitrate has been mined for explosives and fertilizer in the Atacama since the middle of the 19th century. Nearly 3 million metric tons were mined during World War I. Valuable minerals located in arid lands include ...
- Desertification
Desertification does not occur in linear, easily mappable...
- Contents
What Is a Desert? | How the Atmosphere Influences Aridity |...
- Remote Sensing of Arid Lands
The Landsat simulated true color mosaic (left) shows the...
- Desertification
- Geodes
- Fulgurites
- Gold
- Gypsum
- Quartz
- Turquoise
- Agate/Jasper/Chalcedony
- Tourmaline
- Fire Agate
Geodes are nodules of crystals that are held inside a rounded nodule. These range from spherical to potato-shaped, with the majority on the latter end of things. The Mojave Desert is home to many geodes, including a few places that are unmatched in most of the world. The majority of geodes you’ll come across are going to have a chalcedonylayer with...
Not unique to the Mojave, but something that’s rarely seen outside of museums. Fulgurites are fused sandleft behind after a lightning strike, extending from the initial touch and through the sand. They are sometimes excavated whole, but many times its simply pieces of them that are dug up. Specifically, the ones found in the Mojave Desert are most ...
Gold is one of those things that you can’t seem to get away from in California. While the Golden State moniker actually refers to the golden color of the hills during most of the year, it may as well refer to the metal. Gold can be found in the Sierras, in the Central Valley, and even in the depths of the Mojave. Indeed, the only reason humans deci...
Gypsum is a very soft mineral, a form of calcium sulfate dihydrate. It’s a common mineral in the desert, found in a few different forms. The mineral itself is very soft, and while it sometimes forms beautiful crystals care must be taken handling them. Gypsum forms include desert roses, selenite, and ramshorn gypsum. Selenite is the most interesting...
Quartz is preposterously common on our planet. After all, it’s simply the macrocrystalline form of silica. The most commonly seen form is as clear, high clarity crystals with one terminated point. You’re unlikely to find these out in the Mojave, but there are still many forms present for those who know where to look. There are areas in the desert t...
Turquoise is a valuable gemstone, and many people dream of finding a large chunk. Love it or hate it, it’s extremely valuable and an interesting mineral in its own right. This copper-laden stone is a staple of Southwestern style jewelry and older stock can reach preposterous prices. The truth is that most really good pockets of turquoise have eithe...
Whatever you might call an individual piece, cryptocrystalline silica is highly sought after and it exists by the bucket in the Mojave. It’s just a matter of finding one that suits your tastes. All three forms are present to some degree in the Mojave Desert, with agate and jasper being common finds in creek beds. The jasper present in the desert ra...
Tourmaline is a relatively common gemstone, it’s the varieties that will get you. While the Mojave hasn’t yielded any rubellite or indicolite specimens that I’m aware of, you can still find tourmaline crystals of a few different varieties spread throughout the hills and canyons. The most famous deposits, like the Himalaya Mine, are on private land....
Fire agate is still chalcedony, as the ones described above, but there’s a slight difference. Fire agate is usually botryoidal in form, and inside of it are shimmering layers of limonite and iron that create a 3D, iridescent structure when the surface has been polished. This structure is very thin, which makes cutting fire agatesan art that require...
10 de nov. de 2022 · Utah’s share of the Rocky Mountain region is loaded with precious metals that drove the mining booms of the 19th century, while the Colorado Plateau is rich in the uranium that fueled the 20th...
Desert economy: Deserts have always been vital for resources and economy. Sand and stone have been used to build structures where wood is sparse as is the case with Ancient Egypt. But they are also sources of precious metal and gem mining
Updated January 12, 2024. Wulfenite provided by - SpiritNectarGems. Arizona is a treasure trove for rock and mineral enthusiasts! With its vast deserts, soaring mountains, and deep canyons, this place is like a giant sandbox for those with a curious spirit and an eye for natural beauty.
4 de jul. de 2022 · Desert sand (65 wt%), kaolin (20 wt%), alumina (10 wt%), limestone (5 wt%), and lithium fluoride (1.5–2.0 wt%) were milled into powders, which were further pressed into disks and sintered at 1200–1300 °C. Sintering above 1250 °C results in a distinct densification of the green bodies.
23 de abr. de 2021 · CAIRO, April 23 (Reuters) - Mining companies awarded blocks in Egypt's Eastern Desert are set to start exploring for gold under a legislative overhaul that seeks eventually to unlock vast...
