Salt mines under Detroit
One of the unknown jewels of Detroit is that there are huge reserves of salt under the city. About 1200 miles under the lays miles of mines. There is salt rock and halite in the mines.
Salt rock is really called halite, it is a mineral form of sodium chloride. It comes in many shapes and sizes called isometric crystal. It is formed by evaporation of water and other minerals. Generally white or gray, but can come in a wide range of colors.
The salt was created about 400 million years ago, when sea level withdraw and glaciers covered the salt. It is believed to enough salt to last the next 70 million years!
love Detroit, she needs you!
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