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Old 09-24-2002, 09:52 PM
chique chique is offline
Join Date: Feb 2000
Location: East of Lake Wobegone
Posts: 4,514
Where does epsom salt come from?

Grampa wanted to know so I (you know, the one who's always bragging up how cool "that computer thing" really is) did a search and came up kinda dry.

I know it's magnesium sulfate, so I figured it would come from magnesium mines...of which there mostly aren't any as they usually pull magnesium from seawater. I also know there was an Epsom salt mine (run by the American Magnesium Co.) near China Lake which apparently had a nifty monorail system at one time. I know it was discovered near Epsom, England. I even know there's an entire organization devoted to the promotion and use of Epsom salt.

To which grampa said, "Yeah, but where's it come from?"

Old 09-24-2002, 10:30 PM
Squink Squink is offline
Join Date: Oct 2000
Location: Yes
Posts: 20,327
From mineral galleries on the mineral Epsomite:
Epsomite, or heptahydrite as it is known in chemistry circles, is one of only a few water soluble sulfate minerals. It is actually well known in most households as the artificially created epsom salt.
The PQ corporation claims:
PQ is North America's leading producer of magnesium sulfate (Epsom Salts). We supply a range of crystal (heptahydrate) and liquid products from plants and warehouses across the United States and Canada.
The town of


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