Cummingtonite
Cummingtonite
Cummingtonite is a mineral belonging to the amphibole group. It was first discovered in Cummington, Massachusetts, hence its name. The chemical formula of cummingtonite is (Mg,Fe)7Si8O22(OH)2. It is a common mineral found in metamorphic rocks, particularly in regions with high-grade metamorphism.
Properties[edit | edit source]
Cummingtonite typically appears in fibrous or columnar crystal formations. It has a dark green to black color and a vitreous luster. The mineral has a hardness of 5 to 6 on the Mohs scale and a specific gravity of approximately 3.0 to 3.4.
Occurrence[edit | edit source]
Cummingtonite is commonly found in metamorphic rocks such as schists and gneisses. It often occurs alongside other amphibole minerals like grunerite and anthophyllite. Significant deposits of cummingtonite have been discovered in various locations around the world, including the United States, Canada, and Finland.
Uses[edit | edit source]
Cummingtonite does not have significant industrial uses due to its fibrous nature and asbestos-like properties. However, it is of interest to mineral collectors and researchers studying metamorphic processes.
Health Concerns[edit | edit source]
Like other amphibole minerals, cummingtonite can pose health risks if inhaled as fine particles. Prolonged exposure to cummingtonite dust may lead to respiratory issues and lung diseases. It is important to handle this mineral with caution and use appropriate protective equipment when working with it.
See Also[edit | edit source]
Navigation: Wellness - Encyclopedia - Health topics - Disease Index - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
WikiMD is not a substitute for professional medical advice. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.Contributors: Prab R. Tumpati, MD