I have been studying mineralogy bit and i have come across Silicates and Feldspars. I have noticed that most feldspar like orthoclase, plagioclase, microcline etc have some sort of cleavage or the other. But quartz doesn't have anything. Is it because of the temperature at which the magma cools?? Because acc to Bowens Reactions series, quartz is the last to form in the discontinuous and continuous reactions whereas Feldspar cools at higher temperature. Correct me if I'm wrong there. But can some tell and explain a little as to why quartz doesn't show cleavage. Also Olivine which crystallize first do not show cleavage whereas amphibole do a little. Not sure about Pyroxene
quartz is a crystal inside the clock which makes it run. older clocks had pendulums, later on there were clocks you had to wind, and now there are quartz clocks. its the same principle but different and subsequently more modern technologies. the crystal generates the energy when charged that makes the hands move around
Quartz is a crystal that has useful electrical properties. When cut correctly into a specific shape and size, it can create oscillations that have very precise timing. This forms the basis of the accuracy of many timing circuits, including clocks and wristwatches.
quartz is a type of mineral, it is white, and light in color, all it means is that some part of the clock is made from this mineral
EDIT: Quartz = the second most common mineral in the Earth's continental crust. It is made up of a lattice of silica (SiO2) tetrahedra. Quartz has a hardness of 7 on the Mohs scale and a density of 2.65 g/cm?.
