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Hasil cari dari kata atau frase: Porphyry shell(0.00894 detik)
Found 1 items, similar to Porphyry shell.
English → English (gcide)
Definition: Porphyry shell
Porphyry \Por"phy*ry\, n.; pl. Porphyries. [F. porphyre, L.
porphyrites, fr. Gr. ? like purple, fr. ? purple. See
A term used somewhat loosely to designate a rock consisting
of a fine-grained base (usually feldspathic) through which
crystals, as of feldspar or quartz, are disseminated. There
are red, purple, and green varieties, which are highly
esteemed as marbles.
Porphyry shell (Zo["o]l.), a handsome marine gastropod
shell (Oliva porphyria), having a dark red or brown
polished surface, marked with light spots, like porphyry.