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dolomite : ウィキペディア英語版
dolomite

Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The word dolomite is also used to describe the sedimentary carbonate rock, which is composed predominantly of the mineral dolomite (also known as dolostone).
==History==
Most probably the mineral dolomite was first described by Carl Linnaeus in 1768.〔On p.41 of part 3 of his book "Systema naturae per regna tria naturae etc." (1768), Linnaeus stated: "Marmor tardum - Marmor paticulis subimpalpabilibus album diaphanum. Hoc simile quartzo durum, distinctum quod cum aqua forti non, nisi post aliquot minuta & fero, effervescens." In translation: "Slow marble - Marble, white and transparent with barely discernable particles. This is as hard as quartz, but it is different in that it does not, unless after a few minutes, effervesce with "aqua forti"".〕 In 1778, it was described by the Austrian naturalist Belsazar Hacquet as the "stinking stone" ((ドイツ語:Stinkstein), (ラテン語:lapis suillus)).〔Hacquet, B. (1778): Oryctographia Carniolica, oder physikalische Erdbeschreibung des Herzogthums Krain, Istrien und zum Theil der benachbarten Länder, J. G. I. Breitkopf, Leipzig, 162 p. In Volume 2 of this same book, published in 1781, Hacquet mentioned on p. 5 finding a fine, white powder that would not react with acid. This lack of a reaction with (dilute) acid was remarkable because the powder had originated from the underlying limestone. Hacquet (1781) stated that it reminded him of the "Marmor tardum" described earlier by Linnaeus (which decides about the priority of the discovery of the mineral that later became known as "dolomite").〕 In 1791, it was described as a rock by the French naturalist and geologist, Déodat Gratet de Dolomieu (1750–1801) first from buildings in the old city of Rome and later as samples collected in what is now known as the Dolomite Alps of northern Italy. The mineral was given its name in March 1792 by Nicolas-Théodore de Saussure, naming it after De Dolomieu.〔Saussure le fils, M. de (1792): Analyse de la dolomie. Journal de Physique, vol.40, pp.161-173.〕 Hacquet and Dolomieu met in Laibach (Ljubljana) in 1784, which may have contributed to De Dolomieu's work.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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