Check out [ Ссылка ] for an online practical mineral study guide for students and teachers. Short video for mineral identification. Demonstration of magnetism for MinA29.
![](https://s2.save4k.ru/pic/d-9927IrwUo/maxresdefault.jpg)
Check out [ Ссылка ] for an online practical mineral study guide for students and teachers. Short video for mineral identification. Demonstration of magnetism for MinA29.