A rare aluminum silicate mineral, typically green or yellowish, that forms in metamorphic rocks.
From Greek karphon (straw or chaff) and lithos (stone), literally meaning 'chaff-stone'—named for its appearance as small fragments or inclusions resembling straw within rock.
Carpholite is so rare that geologists get excited finding even tiny crystals—it only forms under very specific high-pressure, low-temperature conditions, making it a detective telling scientists exactly what happened to rocks deep underground!
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