Volcanic rock includes the volcanic glass obsidian.
火山巖包括黑曜巖火山玻璃。
Smectite mainly came from the alteration of volcanic ash or volcanic glass and the weathering materials derived from land rocks.
蒙脱石除源于大陆派生的巖石风化物外,主要来自火山物质的蚀变。
A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava.
黑曜巖火山玻璃,一般为黑色,带状,摔碎时色泽光亮,表面。
A new type of chemical analysis has spotted the telltale signs of water molecules inside tiny beads of volcanic glass brought to Earth decades ago by the Apollo astronauts.