Labradorite (English spelling)

Japanese: ラブラドライト(英語表記)labradorite
Labradorite (English spelling)
This rock name was originally proposed as a group name including gabbro, diabase, and diabase [Senft: 1857], but was later used in France for leucobasalt rich in the mineral labradorite (labrador in French), and for labradorite andesite (basalt that does not contain olivine) [Fouque & Michel-Levy: 1879]. In Russia, it was used for leucobasic rocks of gabbro to norite, such as anorthite. In this way, the same rock name as the mineral name was often used, but nowadays, this rock name is not used to prevent confusion.

Source: Asakura Publishing Dictionary of Petrology Information

Japanese:
この岩石名は当初は斑糲(はんれい)岩,輝緑岩,輝緑岩などを含むグループ名として提案されたが[Senft : 1857],後にフランスでは鉱物のラブラドライト(フランス語でlabrador)に富む優白質の玄武岩に用いられ,ラブラドライト安山岩(橄欖(かんらん)石を含まない玄武岩)に使用された[Fouque & Michel-Levy : 1879].ロシアでは灰長岩など斑糲岩~ノーライトの優白質の岩石に使用された.このように鉱物名と同じ岩石名がしばしば用いられていたが,現在では混乱を防ぐためこの岩石の名称は使用されない.

出典 朝倉書店岩石学辞典について 情報

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