This is about a movie from way back.I don't know the tile of it but the subjct of the movie was about these big black crystal rock that came out of the ground and when people would get near them they would die and I think the way they stopped them was with salt and water.I believe the movie was around the same time as War of the Worlds and When the Earth Stood Still. It's an old scifi that's for sure.

Sounds like The Monolith Monsters (1957) (http://www.imdb.com/title/tt0050720/)

Thank you so much. It was driving us nuts at work to think of the name of that movie, Thanks again.

You're very welcome.