What is Slate?

To answer your question yes, I am still babbling on about rocks, stones, and things I learned from “Bill Nye the Science Guy”.  Slate is a natural stone that is a fine grained, metamorphic, and sedimentary rock comprised of clay and volcanic ash.  This article in particular is about slate.

It’s the same stuff that makes you cringe if you drag fingernails across it or if you are like me, spent many many hours writing “I will not shoot spit wads at girls in class” on it with a piece of chalk.  Children born in this century may never even know what a chalkboard is because of modern day Dry Erase boards but back in my day they were made out of stones not paper.

I know what your thinking “Slate isn’t only used in chalkboards” ya I know its just what I always associate it with.  Slate is not use just for crummy ol’ chalk boards, it is very special because when it is broken it breaks very flat and smooth while retaining its’ natural appearance.

Slate does a great job of resisting water absorption and it also makes a fantastic electrical insulator. In the early 20th century slate was even used to make electrical switch boards for relay controls and large electric motors.  More modern uses of slate are for roofing materials, interior and exterior flooring, walkways, and even decorative tables.

So after all that rambling about slate what is the big deal – it’s still just a chunk of stone right?

Chalk One Up


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