cummingtonite
cummingtonite, an amphibole mineral, an iron and magnesium silicate that occurs in metamorphic rocks. For chemical formula and detailed physical properties, see amphibole (table).
Citation Information
Article Title:
cummingtonite
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
13 December 2024
Access Date:
March 15, 2025