Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Granite sounds like a good idea.

I wonder about the flecks of soft mica in granite though. I've seen both granite and porcelain tile at Home Depot. I think those will be my next attempts.

I'm reading that marble is actually a relatively soft stone with a hardness no greater than 5 on the Mohs Hardness Scale compared to granite's 7. Here is more info on the hardness of granite:

"The Mohs Scale is used to determine the relative hardness of a mineral as a comparison to another mineral. Because granite is a rock composed of multiple minerals, only crystals of specific minerals within the granite would be tested for hardness. Granite is typically composed of quartz (Mohs-7), potassium feldspar (Mohs-6), and biotite and muscovite micas (Mohs-2.0-2.5). The varying amounts of these minerals would made it difficult to assign a specific Mohs hardness to granite generally. Besides the Mohs scale, which only measures the hardness of minerals by their ability to scratch or be scratched by another mineral, the hardness of granite is greater than many other rock types because of its interlocking mineral structure which is a result of the growth of mineral crystals out of a molten state. As different minerals reach their point of crystallization in the Bowen's reaction series, they form in the space that remains in which to form, resulting in crystals which are tightly interlocked with each other."


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