Quarry dust between pavers?
Let's put it this way - If the Directions called for, among other things, the use of Quarry Dust, then go ahead and use Quarry Dust.
If the directions call for the use of Sand, then I'd use Sand. Sand is used because it's a uniform product. Quarry Dust isn't uniform, in shape, like Sand is. If you want to know for sure, ctc the folks that wrote the Instructions. Other than that, you're on your own.
My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless America!