Rosamond area, Dec 14th, 2019

Hi fieldtrip friends, long time no see!

I hope you had a good Thanksgiving. Now is your chance to walk off those calories in the high desert. I know I need it very much after the long hibernation.

We will have a dual-focus fieldtrip on Saturday, December 14th, to the Rosamond area, 90 miles from Pasadena, an easy 1.5-hour drive. Dress accordingly using multiple layers — it will be very chilly in the morning, then it will get warmer during the day. There is very little snow in the area, incoming storms probably will not change that too much.

The first part is designed for people who love uranium microminerals with great UV fluorescence. We will meet at 7:00 AM in a quarry off the Mojave-Tropico Rd. This very early start time should give us some time to hunt with the LW UV light before the Sun makes it harder. The quarry has nice yellow-green micro autunite crystals with bright green fluorescence and I saw at least one another uranium mineral. There is a short adit with a chance to dig underground too. Bring UV torches of your choice; dust masks and headgear are required.

There are two more uranium mineral locations within a one-mile radius, we will try to visit them as well after 8 AM. The quarry and the Rosamond prospect are located just off the asphalt road, fine for regular cars, however, the third U mine will require high clearance SUV – or a long walk.

At 10:00 AM we will reconvene at the original meeting point for the second part of the fieldtrip – the Gem Hill visit for lovers of colorful quartz. After short drive uphill (medium clearance SUV required) we will park on the top of the green quartz deposit. There is brown jasper that looks like chert and dark green and milky green jasper/agate, sometimes banded together. There is a lot of material still on the surface, but dedicated people might want to dig for better material. If you need very pretty garden rocks you will fill your bucket quickly. If you know somebody who needs a bucket of rocks for Christmas, that might be a perfect gift idea. The rockhounding books mention petrified wood too, might be just the question of kicking over the right rock.

If you are interested only in one part of the trip you’re welcome to come and go as you see fit.

GPS coordinates of the meeting place: 34°54’47.9″N 118°13’02.3″W (34.913305, -118.217294)

Here is the Google maps link with directions from Pasadena:

Hope to see you there,