Meanings
Synonyms & antonyms
nounA double silicate of aluminium and magnesium.
Cite this entry
penninite. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/penninite
“penninite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/penninite. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “penninite,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/penninite.
Source: penninite on Wiktionary, CC BY-SA 4.0.