April 2026: We are continuing a major code rewrite, please be patient regarding any issues. If any page is not working for a period of hours, please contact us. Thank you.
| Monthly Tech-Tip | No tracking! No ads! No paywall! |
All Temperature Numbers Temperature Listing
Water vapor is expelled. Many clays contain small amounts of calcium sulphate.
| Minerals |
Gypsum
Gypsum is hydrated calcium sulphate, CaSO4 2H2O. It is the crystalline mineral from which plaster is |
| By Tony Hansen Follow me on ![]() | ![]() |
Buy me a coffee and we can talk