stilpnomelane

English

Etymology

Ancient Greek στιλπνός (stilpnós, “glittering”), and μελανός (melanós, “black”).

Noun

stilpnomelane (countable and uncountable, plural stilpnomelanes)

1. (mineralogy) A metamorphic phyllosilicate mineral of the mica group, having the chemical formula K(Fe²⁺,Mg,Fe³⁺)₈(Si,Al)₁₂(O,OH)₂₇.

Further reading

• David Barthelmy (1997–2024) “Stilpnomelane”, in Webmineral Mineralogy Database.
• “stilpnomelane”, in Mindat.org‎^[1], Hudson Institute of Mineralogy, 2000–2024.