porphyry

How To Use porphyry In A Sentence

• Vatican a magnificent porphyry labrum found in one of the imperial baths; and Baccius, a great modern authority on baths, speaks of labra made of glass. Museum of Antiquity A Description of Ancient Life
• Specifically, it is obtained from the processing of the mineral molybdenite (a molybdenum ore) that is found in porphyry copper deposits. Rhenium
• The most famous preserved example is the porphyry group of Diocletian, Maximian, Galerius, and Constantius embracing each other, which can now be seen on the southwest corner of the Basilica di San Marco in Venice. Caesars’ Wives
• I at first thought that it was owing to dust blown from the surrounding mountains of red porphyry; for from the magnifying power of the crystals of snow, the groups of these microscopical plants appeared like coarse particles. Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle
• Not that these things (as I said of fasting) are to be discommended of themselves, but very behoveful in some cases and good: sobriety and contemplation join our souls to God, as that heathen [6459] Porphyry can tell us. Anatomy of Melancholy
• But the spirit of great ones was above these circumscriptions, affecting copper, silver, gold, and porphyry urns, wherein Severus lay, after a serious view and sentence on that which should contain him. Hydriotaphia, or Urn-burial
• The 2009 drilling program identified widespread gold mineralization associated with mineralized and altered dacite porphyry and adjacent sedimentary and volcanic rocks, drill hole DDH09-014 revealed gold mineralization of 111 meters grading up to 7.28 grams/tonne. Marketwire - Breaking News Releases
• In 2000, fifty porphyry deposits had been identified in Chile, with reserves of 400 million tons of copper!
• The mine workings occupy much of the west side of an isolated low hill composed mainly of light-colored volcanic rock, described as felsite porphyry or trachyte, highly altered to clay minerals.
• During this time, many of the district's steeply dipping, northeast-trending faults were intruded by narrow, granodiorite porphyry dikes.