pennantite

noun

pen·​nant·​ite
ˈpenənt‧ˌīt
plural -s
: a mineral Mn9Al6Si5O20(OH)16 of the chlorite group consisting of basic silicate of manganese and aluminum isomorphous with thuringite

Word History

Etymology

Thomas Pennant †1798 Welsh naturalist + English -ite

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Cite this Entry

“Pennantite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pennantite. Accessed 8 Nov. 2024.

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