https://quatangthanhdat.com/ky....-niem-chuong-pha-le-
A crystal is a mineral that has been grown in one or more dimensions. Many crystals are very small, but some are quite large. These are called giant crystals. Giant crystals are of interest to geologists because they can be used to determine the conditions under which they formed. The size of a crystal depends on how it is shaped and how quickly it forms. Giant crystals are often found in igneous rocks, indicating that magma with which they are associated was hotter than average and cooled slowly. Igneous rock with large crysta
Like
Comment
Share
