| 释义 |
Definition of columbite in English: columbitenoun kəˈlʌmbʌɪtˈkɑləmˌbaɪt mass nounA black mineral, typically occurring as dense tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium. 铌铁矿 Example sentencesExamples - The abundance of these elements in the parental magma leads to the formation of less-common minerals such as apatite, beryl, topaz, amblygonite, lepidolite, spodumene tantalite, columbite, monazite, zircon, and uraninite.
- It occurs most commonly in the minerals columbite, tantalite, and microlite.
- It is most abundant in the coarse-grained facies and is often associated with triphylite, columbite, and sphalerite.
- Beryl, columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers.
- These minerals are columbite, microlite, futile, thorite, and zircon.
OriginEarly 19th century: from columbium + -ite1. Definition of columbite in US English: columbitenounˈkäləmˌbītˈkɑləmˌbaɪt A black mineral, typically occurring as dense tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium. 铌铁矿 Example sentencesExamples - Beryl, columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers.
- It occurs most commonly in the minerals columbite, tantalite, and microlite.
- It is most abundant in the coarse-grained facies and is often associated with triphylite, columbite, and sphalerite.
- The abundance of these elements in the parental magma leads to the formation of less-common minerals such as apatite, beryl, topaz, amblygonite, lepidolite, spodumene tantalite, columbite, monazite, zircon, and uraninite.
- These minerals are columbite, microlite, futile, thorite, and zircon.
OriginEarly 19th century: from columbium + -ite. |