Wulfenite

Japanese: 黄鉛鉱 - おうえんこう(英語表記)wulfenite
Wulfenite

A mineral found in the oxidation zone of lead deposits. It is also called molybdenum ore. It may form a complex coexistence with other secondary lead minerals, or it may occur alone in quartz veins. Primary minerals of lead and molybdenum rarely coexist, at least in Japan. It is chemically continuous with stolzite (chemical formula Pb[WO 4 ]), which has the same structure. Its euhedral shape is a square plate, bipyramid, or complex square truncated shape. Its characteristics include a yellow-orange color, a resinous to adamantine luster, low hardness, and a large specific gravity. Its English name comes from Franz Xaver Wülfen (1728-1805), a monk and mineralogist in the Austro-Hungarian Empire.

[Akira Kato January 19, 2016]

[References] | Euhedral | Lead-zinc deposits | Continuous changes in chemical composition [Supplementary information] | Pyrite (Data Note)

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

鉛鉱床の酸化帯中に産する鉱物。モリブデン鉛鉱ともいう。他の鉛の二次鉱物と複雑な共存関係を形成することもあれば、この種だけが石英脈中に出現することもある。鉛・モリブデンともに初生鉱物が共存することは、少なくとも日本ではほとんどない。同構造の鉛重石stolzite(化学式Pb[WO4])とは化学組成上連続する。自形は正方板状あるいは両錐(すい)形または複正方台をなす。黄橙(おうとう)色、樹脂~金剛光沢、低硬度、大きな比重などが特徴。英名はオーストリア・ハンガリー帝国の修道士で鉱物学者のウルフェンFranz Xaver Wülfen(1728―1805)にちなむ。

[加藤 昭 2016年1月19日]

[参照項目] | 自形 | 鉛・亜鉛鉱床 | 連続化学組成変化[補完資料] | 黄鉛鉱(データノート)

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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