Geophase
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A point in the sequence of geochemical changes that occur as minerals are formed from cooling magma.
"[…] contemporaneous with gold are gilbertite, leptochlorite, tourmaline, iron sulphides, feldspar, (rare) carbonates, and quartz; post gold minerals are quartz, zinc and lead sulphides, and many others of geophases K and L."
Example
More examples"[…] contemporaneous with gold are gilbertite, leptochlorite, tourmaline, iron sulphides, feldspar, (rare) carbonates, and quartz; post gold minerals are quartz, zinc and lead sulphides, and many others of geophases K and L."
Etymology
Coined by Alexander Fersman, geo- + phase
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.