aluminium oxide iupac name or aluminum oxide american english is a chemical compound of aluminium and oxygen with the chemical formula al 2 o 3.it is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium iii oxide.it is commonly called alumina and may also be called aloxide, aloxite, or alundum depending on particular forms or applications.
joseph milligan sent specimens of a manganese mineral from frenchman's cap and galena to the 1851 great exhibition in london. small amounts of gold were discovered at fingal and lefroy in 1851. william b. clarke, a geologist and anglican parson, predicted that gold would be found in tasmania at 146 degrees east longitude line.
wood, in the strict sense, is yielded by trees, which increase in diameter by the formation, between the existing wood and the inner bark, of new woody layers which envelop the entire stem, living branches, and roots.this process is known as secondary growth; it is the result of cell division in the vascular cambium, a lateral meristem, and subsequent expansion of the new cells.
a chain of volcanic islands or mountains formed by plate tectonics as an oceanic tectonic plate subducts under another tectonic plate and produces magma. isomorphic two crystals that have similar shapes and sizes, usually through the angles. isotope different forms of an element each having different atomic mass mass number .
aluminium silicate or aluminum silicate is a name commonly applied to chemical compounds which are derived from aluminium oxide, al 2 o 3 and silicon dioxide, sio 2 which may be anhydrous or hydrated, naturally occurring as minerals or synthetic. their chemical formulae are often expressed as xal 2 o 3.ysio 2.zh 2 o. it is known as e number e559
industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. after treatment, the treated industrial wastewater or effluent may be reused or released to a sanitary sewer or to a surface water in the environment.
a space elevator is a proposed type of planet-to-space transportation system. the main component would be a cable also called a tether anchored to the surface and extending into space.the design would permit vehicles to travel along the cable from a planetary surface, such as the earth's, directly into space or orbit, without the use of large rockets.
kaolinite / ˈ k eɪ ə l ɪ n aɪ t / is a clay mineral, part of the group of industrial minerals with the chemical composition al 2 si 2 o 5 4.it is a layered silicate mineral, with one tetrahedral sheet of silica sio 4 linked through oxygen atoms to one octahedral sheet of alumina alo 6 octahedra. rocks that are rich in kaolinite are known as kaolin / ˈ k eɪ ə l ɪ n / or china clay.
during past ages, there was rain and snow on mars; especially in the noachian and early hesperian epochs. some moisture entered the ground and formed aquifers.that is, the water went into the ground, seeped down until it reached a layer that would not allow it to penetrate such a layer is called impermeable , and then water piled up forming a layer that was saturated with water.
the mica group of sheet silicate phyllosilicate minerals includes several closely related materials having nearly perfect basal cleavage.all are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition.the nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.
titanium dioxide, also known as titanium iv oxide or titania, is the naturally occurring oxide of titanium, chemical formula tio 2. when used as a pigment, it is called titanium white, pigment white 6 pw6 , or ci 77891. generally, it is sourced from ilmenite, rutile and anatase.
mica consumption in flexible plate was about 21 tonnes in 2008 in the us. heater plate is used where high-temperature insulation is required. molding plate is sheet mica from which v-rings are cut and stamped for use in insulating the copper segments from the steel shaft ends of a commutator.
on the map, the animikie group is the dark gray northeast-trending belt which ranges from south-central minnesota, u.s., up to thunder bay, ontario, canada. the gunflint iron range is the linear black formation labeled g, the mesabi iron range is the jagged black linear formation labeled f, and cuyuna iron range is the two black spots labeled e.
oil sands, tar sands, crude bitumen, or more technically bituminous sands, are a type of unconventional petroleum deposit.oil sands are either loose sands or partially consolidated sandstone containing a naturally occurring mixture of sand, clay, and water, soaked with a dense and extremely viscous form of petroleum technically referred to as bitumen.
geology. the ore mountains are a hercynian block tilted so as to present a steep scarp face towards bohemia and a gentle slope on the german side. they were formed during a lengthy process: during the folding of the variscan orogeny, metamorphism occurred deep underground, forming slate and gneiss.
the amargosa chaos is a series of geological formations located in the black mountains in southern death valley.in the 1930s, geologist levi f. noble studied the faulting and folding in the area, dubbing it the 'amargosa chaos' due to the extreme warping of the rock. later researchers discovered that the region had experienced substantial tension that pulled large blocks of crust apart.
welcome to the wikipedia science reference desk archives; the page you are currently viewing is an archive page. while you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.