noun
allanite
A mineral belonging to the epidote group, often containing rare earth elements. Used in geological and mineralogical contexts.
褐簾石は花崗岩ペグマタイトによく見られる鉱物です。
Allanite is a mineral commonly found in granitic pegmatites.
The name 褐簾石 (かつれんせき) is a Japanese-coined term for the mineral allanite. 褐 (brown) refers to its typical color, 簾 (bamboo blind) may describe its crystal habit, and 石 (stone) indicates a mineral. The exact derivation of 簾 in this context is uncertain.