Revealed

I am slowly working through the rocks I collected in southern California last month, including some interesting jaspers from the Central Coast. One of my favorite locations, as I have mentioned before, is the stretch of coast between Cayucos and San Simeon. Some of the most colorful, varied, and spectacular jaspers I have ever found were here, a place I am sure to go back to again and again.

Sometimes, I pick up rocks that show very little on the outside, maybe a little color, or the glassiness  of agate or jasper. I don't remember what I saw with this one. It was yellow overall, with the smooth sheen of jasper, but very little patterning on the surface.

Today I cut through it revealed a wonderful variety of patterns, almost like the "Picture Jaspers" I look for every year in the Owyhee canyons of Eastern Oregon.  These are the two cut ends of the same piece, about the size of my fist.  Wonderful.

Beach Surprise : "Plume Agate?"

Beach agate, West Seattle

It's been a while since I was out on the beaches near home - blame it on cold weather and too many buckets already full of rocks, waiting for the polisher.

But on a handsome sunny winter day, I hit the beaches near Alki Point. I am always attracted by color and design, but especially if there is any sense of transparency, e.g. that glass-like quality that suggests "agate."

Here's one I found yesterday, an already well-rounded, naturally polished agate. My first thought was that it was what is known as a plume agate, in which impurities grow into the quartz often in lovely, lacy patterns. But when I took a close look at this, it does not have the typical "plume" patterns, but instead appears to be some sort of brecciated rock into which quartz has filled the gaps. Hard to tell what the green stuff is, but it's clearly fractured and shattered. Now, of course, it is suspended in the quartz matrix. Not sure what to call it, but it's handsome nonetheless.

Out of the Tumbler

Cayucos Jasper - Revealed

Tumbling stones, esp. hard jaspers and agate, takes patience.... and I am not a patient man. So when a batch's time in the grit is up (and maybe a few hours early) I open it with all the enthusiasm of a kid on Christmas morning.

This batch was one I particularly looked forward to since recent months have generated some exceptional collecting opportunities. A sharp reader will recognize these, for example, as polished Cayucos jasper : I posted some of the rough in this blog on May 2. All are of red jasper, with quartz/agate intrusions. Handsome stuff.

Also included in this batch were some pieces of Idaho Japer-Agate I collected in late June (see my July 4 post). One of them came out of the tumbler today with some lovely patterns and colors.

Idaho Jasp-agate

California Treasures

Cayucos Jasper, California

In a post a few weeks ago, I reported that I spent a wonderful few hours exploring the beaches near Cayucos, California, in what turned out to be a mother lode of jasper of every pattern and description. Many were so beautifully rounded that they needed little tumbling, and just the addition of a polish to make them stand out. Well, I finished a batch today - and they are beauties.

There are brecciated jaspers (apparently common along in coast range in this area) and a variety of other colors and patterns. It was probably the single most productive few hours I've ever spent chasing rocks.

Having said that, the beach is NOT the best place for collectors looking for slab-worthy chunks of the stuff - these are all small, and really only fit for those who are content with tumblers. I am one of those, and I am delighted with what I found.  Too bad it's a thousand miles south of here!

Polisher Preview

Cayucos Jasper, CA

Here are two early pieces of the Cayucos Jasper from the Central California coast I found earlier this month (see below) An astonishing diversity of color and pattern, found within just a few yards of the beach. Definitely a place worth going back to.

Mysteries on the Wild Coast

Seastacks, Olympic Peninsula

Good weather on the coast lured me out to one of my favorite rockhounding locations.  As in my "Conveyor Belt" post a few days ago, many of the rocks that end up on the beaches of the Olympic Peninsula have been dumped there by glaciers and the massive rivers that they spawned. Although most of the rocks that comprise the many dramatic seastacks on the coast are sedimentary, there are plenty of interesting rocks from somewhere else. Several areas on the Peninsula have thick strata of what could only be ancient river beds, with rounded water-transported rocks that are clearly not local.

I found some terrific rocks on this trip, the most intriguing is the one below, which displays a color pattern like nothing I have ever seen before. It is dense and hard, and should polish nicely. Jasper?

Colorful rock, Olympic coast

This is what rockhounding is for me : a constant treasure hunt, and a vehicle for discovery.