Most olivine is used in metallurgical processes as a slag conditioner. If a rock contains large amounts of olivine, then when this rock weathers, olivine sand will be formed. Sand is formed from the breakdown of rocks.
There is little hope of finding olivine grains in continental sand.
Olivine sand in Hawaii formed from the weathering of olivine crystals form basalt. Olivines range in color from clear through to dark brown, but a shade of olive green is the most common. As with most things in geology, color is always a poor indicator of composition.
And there's another technicality: while the gemstone form of olivine is indeed called peridot, the small chunks of the mineral found in Hawaii wouldn't really qualify, as they are not of gemstone quality.We have corrected these errors in the story below.
See a movie illustrating the olivine structure! French name for: Fayalite-Forsterite Series. Olivine is actually very rare in sand because it is highly susceptible to weathering. Kimberlite, as illustrated in Figs 1 and 2, is a rock dominated by olivine.Most kimberlites are highly altered and their primary textures are poorly preserved, but rare examples, such as the sample from the Kangamiut region of Greenland shown in Fig. Olivine basalts occur as partly emergent intrusions, and trachyandesite dykes fed extensive lava flows …
Early Miocene syn-depositional NE-trending olivine basalt and trachyandesite bodies that formed as intrusions and lava flows occur within the Bigadiç borate basin.
Olivine is significantly denser than other common silicate minerals.
The sandy beaches there are packed with tiny grains of olivine, giving the sand a rather exotic appearance.
There are encrustations of olivine surrounding these swimming holes. The Hawaiian Islands have some unique, naturally formed swimming areas. Sand is formed from the breakdown of rocks.
Very common in volcanic rocks.
It is mined in many locations around the world. Olivine is a silicate mineral where the silicate tetrahedra are embedded in a sea of cations (Mg or Fe) Olivine Images. Olivine sand grains from Hawaii. Origin: Olivine is obtained from many geographic localities.
Halite is a mineral formed through the evaporation of salt water. Olivines are an important rock-forming mineral group. Gem-quality olivine is called Peridot. High-magnesium olivine (forsterite) is added to blast furnaces to remove impurities from steel and to form a slag.Olivine has also been used as a refractory material. Magnesium-rich olivines are abundant in low-silica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earth’s upper mantle. These unique pools can be found on a lava shelf that rests along the coastline of Maui. Most olivine found at Earth's surface is in dark-colored igneous rocks. These types of rocks are most common at divergent plate boundaries and at hot spots within the centers of tectonic plates. Olivine, any member of a group of common magnesium, iron silicate minerals. It is usually easily identifiable because of its bright green color and glassy luster. It usually crystallizes in the presence of plagioclase and pyroxene to form gabbro or basalt. Olivine sand formed from dunite (monomineralic olivine … English synonym of: Fayalite-Forsterite Series.
Olivine is a mineral that is not often used in industry. Geological Olivine is found in many different rocks: Basalts and "peridotitic" (peridot-rich) rocks Olivine is a very common silicate mineral that occurs mostly in dark-colored igneous rocks like peridotite and basalt. Equivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite. INTRODUCTION. 1, contain about 50% of large fresh olivine grains, which are set in a matrix of finer-grained minerals. Asked in Chemistry, Evaporation and Condensation What is salt formed by the natural evaporation of sea water?