Citrine Quartz

石英（Citrite）

Quartz is silicon dioxide, SiO₂. Quartz is abundant in the Earth's crust, being the chemically simplest form of the silicates. All the samples here are displayed in the Smithsonian Museum of Natural History. Citrine quartz is one of the noted varieties of quartz, and is often of gem quality. The gems at right are 264.7 and 636.6 carats and are from Minas Gerais, Brazil.

石英是二氧化硅，SiO₂。石英在地壳中很丰富，是硅酸盐中化学最简单的形式。此处所有样品均陈列在史密森尼自然历史博物馆中。金绿石是石英的一种著名品种，通常具有宝石品质。右边的宝石重264.7和636.6克拉，来自巴西米纳斯吉拉斯州。

The gems of citrine quartz at left are 2277 and 277.9 carats and are from Brazil. The larger gem appeared to be about 5 cm across. The gem below is 143.3 carats from Florissant, Colorado.

左边的 citrine quartz 珠宝重2277和277.9克拉，来自巴西。较大的宝石似乎有约5厘米宽。下面的宝石重143.3克拉，来自科罗拉多州弗洛里桑。

From left to right, these citrine quartz gems are described as 55 carats from Keith Quarry, Auburn, Maine and 21.2 and 156.2 carat gems of unknown origin.

从左到右，这些柠檬石宝石分别描述为来自缅因州阿uburn的Keith矿场的55克拉宝石，以及未知来源的21.2克拉和156.2克拉的宝石。

This specimen of citrine quartz is about 5x6 cm and is from Sete Lagoas, Brazil.

这块黄绿石英标本尺寸约为5厘米乘6厘米，产自巴西塞特拉戈阿斯。

This specimen is from Treasury Tunnel, Ouray, Colorado. The sample was about 8x12 cm, of which this is the upper half.

此样本取自科罗拉多州我们的亚伊隧道。样本大小约为8x12厘米，其中此图是上半部分。

The citrine quartz mineral sample above left is about 2.5x7 cm and is from Madagascar. The gems are 1180 and 781 carats and are from Minas Gerais, Brazil. The largest gem appears to be about 4.5 cm across.

上图左侧的黄绿石英矿物样品尺寸约为2.5×7厘米，来自马达加斯加。宝石的重量分别为1180和781克拉，来自巴西的米纳斯吉拉斯州。最大的宝石看起来直径约为4.5厘米。