A pale yellow variety of crystallinequartz resembling topaz.
一种类似黄玉的晶体石英的淡黄色变体。
2
The silica bricks of high refractoriness, high loading and heavy melting point made of large crystallinequartz have already increased the life to 5 times.
用大结晶脉石英制成高耐火度、高荷重软化点硅砖，使用寿命提高5倍以上。
3
Any of various dark, granite - textured, crystalline rocks rich in plagioclase and having little quartz.