Definitions
Century Dictionary and Cyclopedia
- A word introduced by Rosenbusch to designate the structure of rocks of the granitic family, where the magma in assuming a crystalline character has shrunk in dimensions so as to leave numerous small cavities, giving the mass a structure somewhat analogous to that commonly designated as saccharoidal, as in the case of metamorphic limestone, and also to that to which the name drusy is sometimes applied.
Wiktionary
- adj. mineralogy Being or pertaining to a crystal-lined irregular cavity or vug most commonly found in granitic pegmatites.
Etymologies
- Related to Italian miarole. (Wiktionary)
Examples
“We have begun a study of porphyritic pyroxene rhyolite, erupted as pyroclastic flow, and its intrusive equivalent, ejected during the same eruption as blocks of miarolitic granite with spectacular granophyric groundmass.”
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