Colorado sand is fun to hunt! It's usually along the river where it had pooled, curved deeply, or on the bottom flow. This sand was in your backyard, as far back west of the Res that you can go. Beyond the beaver ponds.
what's 3m color quartz??
Boiling ok but sifting? Me no thinks me could. I wouldn't know what I was sifting for unless it were sparkly & gold colored. Lol