Definition of cummingtonite in English:

cummingtonite

noun ˈkʌmɪŋtənʌɪtˈkəmiNGtəˌnīt

mass noun

A mineral occurring typically as brownish fibrous crystals in some metamorphic rocks. It is a magnesium-rich iron silicate of the amphibole group.
Example sentencesExamples
- The two minerals can have similar distinctive brown colors and are hard to differentiate from each other, although cummingtonite is typically darker and slightly denser.
- This rock is a dark gray schistose rock containing radiating aggregates of cummingtonite and occasionally pyrrhotite.
- Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present.

Origin

Early 19th century: named after Cummington, a town in Massachusetts, US, + -ite¹.

Definition of cummingtonite in US English:

cummingtonite

nounˈkəmiNGtəˌnīt

A mineral occurring typically as brownish fibrous crystals in some metamorphic rocks. It is a magnesium-rich iron silicate of the amphibole group.
Example sentencesExamples
- Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present.
- This rock is a dark gray schistose rock containing radiating aggregates of cummingtonite and occasionally pyrrhotite.
- The two minerals can have similar distinctive brown colors and are hard to differentiate from each other, although cummingtonite is typically darker and slightly denser.

Origin

Early 19th century: named after Cummington, a town in Massachusetts, US, + -ite.

单词	cummingtonite
释义	Definition of cummingtonite in English: cummingtonite noun ˈkʌmɪŋtənʌɪtˈkəmiNGtəˌnīt mass noun A mineral occurring typically as brownish fibrous crystals in some metamorphic rocks. It is a magnesium-rich iron silicate of the amphibole group. Example sentencesExamples The two minerals can have similar distinctive brown colors and are hard to differentiate from each other, although cummingtonite is typically darker and slightly denser. This rock is a dark gray schistose rock containing radiating aggregates of cummingtonite and occasionally pyrrhotite. Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present. Origin Early 19th century: named after Cummington, a town in Massachusetts, US, + -ite¹. Definition of cummingtonite in US English: cummingtonite nounˈkəmiNGtəˌnīt A mineral occurring typically as brownish fibrous crystals in some metamorphic rocks. It is a magnesium-rich iron silicate of the amphibole group. Example sentencesExamples Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present. This rock is a dark gray schistose rock containing radiating aggregates of cummingtonite and occasionally pyrrhotite. The two minerals can have similar distinctive brown colors and are hard to differentiate from each other, although cummingtonite is typically darker and slightly denser. Origin Early 19th century: named after Cummington, a town in Massachusetts, US, + -ite.
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