Talc

滑石

Talc is a soft mineral, measuring about 1 on the Mohs hardness scale. The softest of the common minerals, it can be scratched with a fingernail. This sample is on display at the Smithsonian Museum of Natural History. It is described as actinolite-talc schist and its source is the Catalina Schist, Santa Catalina Island, California. It is dated at 100 million years old. Further comments "Water goes in: the container at right shows how much water this rock contains. It formed deep in a subduction zone when the altered oceanic lithosphere began to release water." This sample is about 25cm long.

滑石是一种软矿物，莫氏硬度约为1。这是最常见的矿物中最软的一种，可以用指甲划出痕迹。该样本陈列在史密森尼自然历史博物馆。它被描述为角闪石-滑石片岩，其来源是加利福尼亚州的卡特琳娜片岩，位于圣卡特琳娜岛。其年龄约为1亿年。进一步说明：“水进入其中：右侧的容器显示这种岩石含有多少水。它是在俯冲带形成，当变质的洋壳开始释放水时。”该样本长约25厘米。

Talc has the composition Mg₃Si₃O₁₀(OH)₃ as a silicate of magnesium. This talc sample is about 12x4 cm and is from Schabry, Ekaterinburg, Urals, Russia.

滑石的化学式为Mg₃Si₃O₁₀(OH)₃，属于镁的硅酸盐。这种滑石样品尺寸约为12x4厘米，产自俄罗斯乌拉尔地区的斯哈布罗。

This sample is described as magnesite-talc schist. The sample is about 15 cm wide and is from Garnet Zone, Cambrian-Ordovician Periods, Smithville, Vermont.

这种样本被描述为磁铁矿-滑石片岩。样本宽约15厘米，来自佛蒙特州史密斯维尔的寒武-奥陶纪时期。

Mindat: Talc

Mindat: 软石