Yuma AZ

Another idea: closer to Yuma (city) than most of the locations in Yuma county (5,522 sq. miles, bigger than Connecticut) is the Indian Pass area in Imperial County CA. Head west on HWY8, exit Olgivy Rd. drive about 14 mi north, turn 6.8 miles east on Indian Pass Rd. Here's a link to the Jasper and Dumortierite found there, www.gamineral.org/rr06_yuma-az_ogilby-road.html

I also really like the bog agate which polishes into an always surprising mix of design and color, typically in the white to brown range with random red highlights.

An older site, the farther you walk the better the pickings. Also, not recommended for summer collecting unless you're very experienced with desert conditions and have two vehicles along. Indian Pass is outside of most cell phone carriers, is basically untraveled in summer, and is beyond walking distance without extraordinary planning and supplies. Much better in Nov-Apr.

I went out yesterday to a less-remote site. Arrived at 6:00 a.m. at 84 degrees, 5 miles, 3 hours, 13 degrees and 75 lbs. of rocks later I was drinking out of a water bottle that someone had dropped quite a while ago (winter?) 2/3rds full in a rocky desert wash, about a mile from my car. And grateful.

In my altered state, I developed a formula for the leaverite/keeper decision that states: "the relative collecting value of a rock is inversely proportional to the work times distance involved in its retrieval".

I apologize if this has been formally presented by some other rockhound, it's pretty obvious in a way.

Hope this helps.