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⚡️Rock of the Day⚡️ Selenite - Carving an Ankh from raw slab... Part 2
- Published on Jul 7, 2021
- Today, I finish carving an Ankh from Selenite and discuss the electrical properties and my interpretation of the symbk.
1. a negatively charged ion, i.e. one that would be attracted to the anode in electrolysis.
1. a crystalline hydrate containing one molecule of water for every two molecules of the compound in question.
“Anion water in gypsum (CaSO4·2H2O) and hemihydrate (CaSO4·1/2H2O)
The bonding nature of water in gypsum, CaSO4·2H2O, and hemihydrate, CaSO4·1/2H2O, was suggested by characteristic absorption bands of water and sulphate ions. The infrared spectral data indicate the presence of anion water in gypsum and hemihydrate through hydrogen bonding. Negative shifting of bending vibration of SO4 ion and lowering and broadening of the O-H stretching vibration at around 3600 cm−1 indicate the presence of both anion water and hydrogen bonding in gypsum and hemihydrate”
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