There are two alternative ways that rocks are frequently categorised; the primary is based to the processes by which they kind, wherein rocks are labeled as either sedimentary, igneous, and metamorphic. Rocks will also be frequently classified by grain or crystal dimensions. Encyclopaedia Britannica's editors oversee subject matter spots in https://rocksticks34566.elbloglibre.com/36332317/details-fiction-and-sticks-of-rock