There is beaches with black sand so you might be able to get it.
They use all kinds of sand for reef tanks so the black sand is probably fine but you won't get the benefits of the minerals releasing back into the tank. In your case it won't matter anyway. The fresh water stuff is probably OK, just check to see what its main content is. I would think for a fish only system it is not that critical. Just my opinion though. 
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller
180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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