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Huemulite
Huemulite is a mineral with formula Na4Mg(V10O28)·24H2O that is yellow to orange in color. It was first discovered in Argentina in 1959 and described in 1966. The mineral is named for the Huemul mine in which it was discovered. ==Occurrence and properties== Huemulite is yellowish orange to orange and bright in color.〔〔 The mineral occurs as thin films, aggregates of fine fibers, botryoidal masses, and interstitial filling in host sandstone.〔〔 Huemulite has been found in Argentina, the Czech Republic, the United Kingdom, and the United States.〔 It occurs in association with epsomite, gypsum, hummerite, rossite, and thenardite. Huemulite is a member of the pascoite group.〔 It melts at to become a red liquid. Huemulite dissolves readily in cold water to produce an orange-yellow solution with a pH of 5.5 to 6.5.〔Gordillo, p. 12.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Huemulite」の詳細全文を読む
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