Salt

Salt

 

 

 

Table Salt

The next mineral on the Geofacts No. 11 handout is salt.  I was proud to note that Ohio is 3rd in salt production.  I have known about the salt mines under Lake Erie near Cleveland for several years.  I saw a Science Channel show on the subject.  I think that they are about 1000 feet underground.  They leave salt pillars every so far to support the ceiling.  Though not in Ohio, there is another, perhaps larger mine in or near Detroit.  Salt forms into the crystal habit (second picture) of cube when water evaporates.  It can also form as a sediment (probably first picture).  We are all aware of its use on the table and at this time of year on the roads.  The other uses are outlined in the Geofacts No. 11.

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