Quartz crystals filling open vein in quartzite April 2, 2021/in /by Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png Marli Miller2021-04-02 03:53:262021-04-02 03:53:26Quartz crystals filling open vein in quartzite