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Yer talkin rocks here.

Even though it's slate and fits the definition the degree of metamorphism can vary from sample to sample as will the minor minerals so these differences and differences in...

Slate is really common stuff. These rock places charge because of the labor in making roofing tiles out of them or just as a handling fee. Slate is easy to get flat because it has really perfect...

You've never worked on a rock face or overhang and had a ton of rocks come down especially on a grade. I can attest from personal experience rocks can run very fast, faster than you.:)

Shale is a purely sedimentary rock. Shale and slate are similar because slate is shale that has gone through the metamorphism process.