地下のマグマが地中や地表で冷却固結してできた岩石例文帳に追加

a rock formed by the solidification of a molten magma in or on the ground - EDR日英対訳辞書

接触変成岩というマグマの貫入による変成作用により生じた岩石例文帳に追加

a rock formed by metamorphism due to magma intrusion, called contact rock発音を聞く  - EDR日英対訳辞書

樹脂材等に湯温により遠赤外線を放射する鉱石等（滑石、マグマ鉱石、雲母、トルマリン鉱石、セラミック、チタニューム等）の粉末を含有、または塗布し中空またはスポンジ状の水に浮く浮遊片とする。例文帳に追加

This is a hollow or sponge-like floating piece which floats in water and is formed by containing or coating a resin material or the like with powder of ore or the like (talc, magma ore, mica, tourmaline ore, ceramic, titanium or the like) which radiates far infrared rays according to the temperature of hot water. - 特許庁