- ནག་མཚུར།
- nag mtshur
- kāsīsa
- Term
- green vitriol
- ནག་མཚུར།
- nag mtshur
- kāsīsa
Iron sulfate or ferrous sulphate, also known in the past as copperas. A blue-green powder that has had many uses including being used in the process of refining gold through solutions of gold and green vitriol.