What is the chemical formula of the mineral used by the inventor known as 'The Wizard of Menlo Park' in 1895?
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Scheelite Scheelite is a calcium tungstate mineral with the chemical formula CaWO. It is an important ore of tungsten (wolfram). Well-formed crystals are sought by collectors and are occasionally fashioned into gemstones when suitably free of flaws. Scheelite has been synthesized using the Czochralski process; the material produced may be used to imitate diamond, as a scintillator, or as a solid-state lasing medium. It was also used in radium paint in the same fashion as was zinc sulphide, and Thomas Edison invented a fluoroscope with a calcium tungstate-coated screen, making the images six times brighter that those with barium platinocyanide; the latter chemical allowed Röntgen to discover X-rays in early November 1895.
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Thomas Edison Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb. Dubbed "The Wizard of Menlo Park", he was one of the first inventors to apply the principles of mass production and large-scale teamwork to the process of invention, and because of that, he is often credited with the creation of the first industrial research laboratory.
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Hercynite Hercynite is a spinel mineral with the formula FeAlO.
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Manganoeudialyte Manganoeudialyte is an moderately rare mineral of the eudialyte group, with formula NaCaMnZrSi[SiO(OH)]Cl·4HO. The formula given is one of the forms that can be given, based on the originally reported one, and shows dominance of silicon at both the M3 and M4 sites. As suggested by its name, it is the manganese-analogue of eudialyte.
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Sarkinite Sarkinite, synonymous with chondrarsenite and polyarsenite, is a mineral with formula Mn(AsO)(OH). The mineral is named for the Greek word "σάρκιυος", meaning made of flesh, for its red color and greasy luster. The mineral was first noted in Sweden in 1865 as chondrarsenite, though not identified as Sarkinite until 1885.
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Aguilarite Aguilarite is an uncommon sulfosalt mineral with formula AgSeS. It was described in 1891 and named for discoverer Ponciano Aguilar.
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Sewardite Sewardite is a rare arsenate mineral with formula of CaFe(AsO)(OH). Sewardite was discovered in 1982 and named for the mineralogist, Terry M. Seward (born 1940), a professor of geochemistry in Zürich, Switzerland.
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Stolzite Stolzite is a mineral, a lead tungstate; with the formula PbWO. It is similar to, and often associated with, wulfenite which is the same chemical formula except that the tungsten is replaced by molybdenum. Stolzite crystallizes in the tetragonal crystal system and is dimorphous with the monoclinic form raspite.
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Acuminite Acuminite is a rare halide mineral of with chemical formula: SrAlF(OH)·(HO). Its name comes from the Latin word "acumen", meaning "spear point". Its Mohs scale rating is 3.5.
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Feklichevite Feklichevite is a rare mineral of the eudialyte group with the formula NaCa(Fe,Fe)ZrNbSi(SiO)(SiO). The original formula was extended to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. When compared to other minerals of the group, feklichevite characterizes in the presence of ferric iron (thus similar to ikranite, mogovidite and fengchengite) and dominance of calcium at the N4 site. Calcium is ordered in the structure and is also present at the M1 site. Other iron-bearing minerals of the group are eudialyte, ferrokentbrooksite, georgbarsanovite, khomyakovite, labyrinthite, oneillite and rastsvetaevite, but they rather contain ferrous iron Feklichevite name honors Russian mineralogist and crystallographer, V. G. Feklichev.
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Kröhnkite Kröhnkite ( NaCu(SO)•2HO ) is a rare copper sulfate mineral named after B. Kröhnke who first researched it.
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Sanbornite Sanbornite is a rare barium phyllosilicate mineral with formula BaSiO. Sanbornite is a colorless to white to pale green, platey orthorhombic mineral with Mohs hardness of 5 and a specific gravity of 3.74.
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Andrewsite Andrewsite is a now discredited mineral originally reported at the Wheal Phoenix mine, near Liskeard in Cornwall. It was named for Thomas Andrews FRS, the English chemist.
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Amblygonite Amblygonite is a fluorophosphate mineral, (Li,Na)AlPO(F,OH), composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars. Its density, cleavage and flame test for lithium are diagnostic. Amblygonite forms a series with "montebrasite", the low fluorine endmember. Geologic occurrence is in granite pegmatites, high-temperature tin veins, and greisens. Amblygonite occurs with spodumene, apatite, lepidolite, tourmaline, and other lithium-bearing minerals in pegmatite veins. It contains about 10% lithium, and has been utilized as a source of lithium. The chief commercial sources have historically been the deposits of California and France.
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Weeksite Weeksite is a naturally occurring uranium silicate mineral with the chemical formula: K(UO)SiO•4(HO), potassium uranyl silicate. Weeksite has a Mohs hardness of 1-2. It was named for USGS mineralogist Alice Mary Dowse Weeks (1909–1988).
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Grandreefite Grandreefite is a rare secondary lead sulfate-fluoride mineral with a general chemical formula, PbSOF. It is named for the location in which it was discovered in 1989, the Grand Reef Mine in Graham County, Arizona.
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Aqualite Aqualite is a very rare mineral of the eudialyte group, with formula (HO)(Na,K,Sr)CaZrSiSi(SiO)(OH)Cl. The formula given does not show the presence of cyclic silicate groups. The original formula was extended to show the presence of silicon at both M3 and M4 sites, according to the nomenclature of the eudialyte group. Aqualite is unique among the eudialyte group in being hydronium-rich (the only other eudialyte-group species with essential hydronium, is the recently discovered ilyukhinite). Among the other representatives of the group it also distinguish in splitting of the M1 site into two sub-sites, both occupied by calcium. Thus, its symmetry is lowered from typical for most eudialytes "R"3"m" (or "R"-3"m") to "R"3. The name refers to high content of water in the mineral.
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Sodium tetrachloroaluminate Sodium tetrachloroaluminate, also known as natrium chloroaluminate, is a chemical compound with the formula NaAlCl4. It was discovered in the 20th century.
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Artroeite Artroeite (PbAlF(OH)) is a mineral found in Arizona. It is named for the late American chemist Arthur Roe (1912–1993).
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Triplite Triplite is a rare phosphate mineral with formula: ( Mn , Fe ) PO ( F , OH ) . It occurs in phosphate-rich granitic pegmatites typically as irregular brown opaque masses. Triplite was first described in 1813 for an occurrence in Chanteloube, Limousin, France. The name is from the Greek "triplos" for triple, in reference to the three cleavage directions. In color and appearance, it is very similar to rhodocrosite, another manganese bearing mineral. Chemically, it is also quite similar to triploidite the difference being that triplite is fluorine dominant while triploidite is hydroxide dominant.
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Molybdenum trioxide Molybdenum trioxide is chemical compound with the formula MoO. This compound is produced on the largest scale of any molybdenum compound. It occurs as the rare mineral molybdite. Its chief application is as an oxidation catalyst and as a raw material for the production of molybdenum metal.
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Berlinite Berlinite (aluminium phosphate, chemical formula AlPO) is a rare phosphate mineral. It has the same crystal structure as quartz with a low temperature polytype isostructural with α–quartz and a high temperature polytype isostructural with β–quartz. Berlinite can vary from colorless to greyish or pale pink and has translucent crystals.