Quartz is so varied that tons of gems — like amethyst, chalcedony, agate, and citrine — are all made of silica.

石英的种类太多，以至于大量宝石——如紫水晶、玉髓、玛瑙和黄水晶皆由二氧成。

The sand many of us are used to is tiny pieces of quartz that've been broken down from bigger rocks.

我们许多人习惯的沙子是从更大的岩石上分解下来的小块石英。

Most of the petrified wood found in the park is made up of quartz.

公园发现的大部分石木都是用石英成的。

In fact the silica in sand is basically just tiny bits of quartz.

实际上沙子的砂本质上就是细碎的石英。

One section of its walls of grey Delhi quartzite had collapsed.

其中一段灰色的德石英岩墙已经倒塌。

Shocked-quarts is a form of quartz that has a very different structure.

冲击石英是石英的一种形式，有很不一样的结构。

Granite, which usually forms from magmas that cooled and partially re-melted over and over—the minerals like quartz in granite melt easily, so they liquefy and separate from the leftover solid as rocks start to melt.

花岗岩通常是由岩浆冷却和部分再融形成的，花岗岩中的石英等矿物质很容易融，所以当岩石开始融时，它们会液并与剩余的固体分离。

He's a surveyor and spends many days each year traversing the mountain slopes on the hunt for clear and smokey quartz crystals.

他是一名测量员，每年花很多天的时间穿越山坡寻找透明和烟灰色的石英晶体。

Every valley was filled with air like that of a kiln, and the clean quartz sand of the winter water-courses, which formed summer paths, had undergone a species of incineration since the drought had set in.

每一个山谷，弥漫着窖房一样的热气，自从干旱开始以来，冬天是、夏天成路的，原本被冲洗干净的石英沙子，仿佛经历了一番焚。

In addition, though, it is doped with powdered quartz (the pure stuff, rather than the tainted variety that makes up most sand) and various reinforcing metals and fibres.

但UHPC中还配有石英砂及各种加固材料和纤维。这种石英砂不同于其他大量混有 沙子的石英砂，纯度高达100%。

" Don't be deceived by gambling, and don't be tricked by job offers, " Shi Yingjie, who is from the eastern city of Hangzhou and watched the movie twice, told Sixth Tone.

“不要被赌博欺骗，也不要被工作机会欺骗，”来自东部城市杭州的石英杰(音译)在接受《第六声》采访时表示，他已经看了这部电影两遍。

Tan sand is the most common, and it's made up of a rock called quartz that's been tinted by a chemical called iron oxide and another mineral called feldspar.

棕褐色的沙子是最常见的，是由一种叫做石英的岩石成，这种石英被一种叫做氧铁的学物质和另一种叫做长石的矿物着色。

We now use some of these objects every day. For example, we have Quartz crystal clocks and watches with accuracy of one minute a year.

其中有一些成了我们今天日常生活中使用的物品。例如，我们现在使用的石英钟和石英表的精确度达到了一年误差不超过一分钟。

As the magma cools, different minerals crystallize into solid rock at different temperatures, and quartz is one of the last minerals to form.

随着岩浆的冷却，不同的矿物在不同的温度下结晶成固体岩石，而石英是最后形成的矿物之一。

You see a divide there between the rock and quartz, then right up there you can see the top of it.

你能看见岩石和石英的分界线，就在上面你能看见它的顶端。

They’re producing more oil with less rigs, but if you stop drilling for rigs, or stop drilling in the shale, or slow that process down, you’re not going to have as much demand for the sand.

他们用更少的钻井开采更多的石油，但如果现在停止油井或页岩中的石油开采，或者减缓这一过程，那么现在对石英砂的需求就没有那么多了。

The researchers also studied damage to the structure in ancient small pieces of quartz to produce an age estimate.

研究人员还研究了古代小块石英结构的损坏以预估年代。

For example, we have Quartz Crystal clocks and watches accurate to within one minute a year.

例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。

This paper is a bit like a beautiful handmade automatic timepiece in the era of quartz watches.

这篇论文有点像是石英表时代的一块精美的手工制作机械表。

Under incredible pressure, the crystals within the quarts are deformed and actually fractured.

在极高压下，石英的内部结晶变现破裂。