Mineral sands , such as zircon , sit under a tarpaulin .

油布覆盖着锆石之类矿产。

China 's zircon sand industry plays an important role in the global zircon sand industry .

中国的锆砂产业在世界锆砂产业中占有十分重要的地位。

They produce everything from aluminium to zircon , and so are less susceptible to fluctuations in the price of any particular metal .

它们的产品包罗万象，从铝到锆石不一而足，故而不易受到某一种金属价格波动的影响。

Significantly , contained hm increased by 40 % from 650kt to 914kt , contained zircon increased by 120 % from 46kt to 102kt .

值得注意的是所包含的富矿增长40%从650千吨增加到914千吨含有的锆石增加了120%，从46千吨增加到102千吨。

The ash contains minerals such as zircon that can be dated precisely from the radioactive decay of some of their components .

火山灰包含像锆石一类能够通过同位素的放射性衰变来精确确定年份的矿物质。