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Menilite
Menilite is a greyish-brown form of the mineraloid opal.〔http://www.mindat.org/min-9796.html Mindat.org〕 It is also known as ''liver opal'' or ''leberopal'' (German), due to its color. It is called menilite because it was first described from Ménilmontant (Paris), France,〔 where it occurs as concretions within bituminous early Oligocene Menilite shales. ==See also==
* Geyserite * Hyalite * List of minerals
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「Menilite」の詳細全文を読む
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