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Viareggio ( Italian pronunciation: [vjaˈreddʒo; vi.aˈreddʒo]) is a city and comune in northern Tuscany, Italy, on the coast of the Tyrrhenian Sea. With a population of over 62,000, it is the second largest city in the province of Lucca, after Lucca . It is known as a seaside resort as well as being the home of the famous carnival of ...
Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide ). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral and ...
Quartz diorite is an igneous, plutonic ( intrusive) rock, of felsic composition, with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with 10% or less potassium feldspar. Quartz is present at between 5 and 20% of the rock. Biotite, amphiboles and pyroxenes are common dark accessory minerals.
Viareggio Calcio was founded in 1919 by a merger of 6 football clubs: Esperia, Libertas, Vigor, Giuseppe Garibaldi, Aquila and Celeritas. [4] The club was re-founded in 1939 as A.S. Viareggio Calcio and again as A.C. Viareggio in 1994. [5] Viareggio played in Serie B between 1933–1937 and 1946–1948.
The room-temperature form of quartz, α-quartz, undergoes a reversible change in crystal structure at 573 °C to form β-quartz. This phenomenon is called an inversion, and for the α to β quartz inversion is accompanied by a linear expansion of 0.45%. This inversion can lead to cracking of ceramic ware if cooling occurs too quickly through ...
Plagioclase; dark minerals. Alkali feldspar granite, some varieties of which are called 'red granite', [ 1] is a felsic igneous rock and a type of granite rich in the mineral potassium feldspar (K-spar). It is a dense rock with a phaneritic texture. The abundance of K-spar gives the rock a predominant pink to reddish hue; peppered with minor ...
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