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来自维基百科,自由的百科全书
鹼玄岩(英語:Tephrite)是一種火成岩,具有隱晶質至斑狀質地,礦物通常富含似長石(白榴石或霞石)、斜長石和鹼含量較少的長石。其常見副礦物為輝石(單斜輝石),但不存在石英和橄欖石。產地包括德國海德堡內卡雷爾茨附近漢貝格的白榴石/霞石鹼玄岩[1]、意大利巴西利卡塔大區武爾圖雷山(Monte Vulture)的響岩鹼玄岩和納米比亞的侵入性鹼玄岩。
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