translation.en: These mountains contain also a scientific paradox: They are made by quartz, which is a very common mineral on the earth's crust, and the rock made up by quartz is called quartzite, and quartzite is one of the hardest and least soluble minerals on earth.
translation.zh: 这些山脉还包含一个科学悖论： 它们是由石英组成， 石英是地壳中很常见的一种矿石， 由石英组成的岩石叫石英岩， 石英岩是地球上最坚硬、 最难被溶蚀的岩石之一。