请输入您要查询的英文单词:

 

单词 allanite
释义

allanite

/ˈalənʌɪt /
noun [mass noun]
A brownish-black mineral of the epidote group, consisting of a silicate of rare earth metals, aluminium, and iron.Large titanite euhedra are abundant along with apatite and zircon, with allanite and epidote less so....
  • In his 1885 report, Eakins described allanite and gadolinite from the area.
  • Gadolinite and allanite intergrowths form walnut-shaped vitreous black masses and nodules to 5 cm across.

Origin

Early 19th century: named after Thomas Allan (1777–1833), Scottish mineralogist, + -ite1.

随便看

 

英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/24 20:04:34