Rock Identification

[Musclecar67]

I picked up a few rocks from my local landscaping company. No reaction to API Nitrate #2 solution. I broke them up to the size I want and bleached them in very hot water. Then washed and scrubbed them with clean water. Ill soak them in water with 10ml of Prime before I use them but I need help identifying them. I believe its a granite or slate. When braking them the rock usually split with the grain.

[DerekFF]

Yeah looks like a granite/slate rock to me also. Its safe

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[ROZDAB]

Phyllite? I think most will call it slate though. I might be completely wrong, just trying to help

[EdTheEdge]

Looks metamorphic to me.... schist maybe?

[kamikazi]

Granite doesn't usually have grain that it will break along.

My vote would be slate or something else.

Either way it looks safe to me.

[Musclecar67]

Thanks everyone! I think its slate too especially that it breaks the way it does.