actinolite
noun
ac·tin·o·lite
ak-ˈti-nə-ˌlīt 
: a bright green or grayish-green mineral of the amphibole group that is a silicate of calcium, magnesium, and iron occurring in fibrous, radiate, or columnar forms
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Nephrite, an aggregate rock made mostly of tremolite with a bit of actinolite, is more common.
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Victoria Gomelsky, New York Times, 26 Feb. 2025
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Victoria Gomelsky, New York Times, 26 Feb. 2025
Cite this Entry
“Actinolite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actinolite. Accessed 12 Mar. 2025.
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