strontia

Of or pertaining to an alkali or to alkalies; having the properties of an alkali. ÷ earths, certain substances, as lime, baryta, strontia, and magnesia, possessing some of the qualities of alkalies.

It’s a form of rock crystal, strontia, I believe some people call it, and I don’t doubt but what it’s related to the limestone in the quarries.

Strontium obtained from carbonate of strontia by Sir Humphry Davy.

Stron′tia, the oxide of strontium—also Stron′tian; Stron′tianite, carbonate of strontia.

This table tells us that the affinity of baryta for sulphuric acid is greater than that of strontia for the same acid, that of strontia greater than that of potash, and so on.