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A short tutorial on how to identify pigment rocks.

There are many different sources for I can use for pigments, including plants, clay, soil, bones, and rocks. Most of the plants aren’t lightfast, so I don’t use many of those, but the main source for my Paleo Paints is rocks. While rocks may be plentiful and easy to find wherever you are, not all of them are good for, or easy to work with, for making pigments. Sometimes there is good color in very hard rocks, but the pigment rocks I like using the most are soft enough to be able to grind down into fairly fine powders that can easily be washed and separated for nice, smooth paints.

But do I go around whilly-nilly testing just any rock, plucking them off the ground or out of the creek at random? Sometimes… lol. But not *usually*. Sometimes I do test rocks at random. But there is at least a little method to my madness. I’ve never tried to explain it to anyone before, though, so feel free to comment with questions if I didn’t answer yours.

Here’s my How-To for Identifying Pigment Rocks

Total Time Needed :

10 Minutes, once on location.

Total Cost:

0 USD

Required Tools:

– your hands– your eyes– rocks– water

Things Needed?

– rocks– water

Steps to Testing Rocks:

Felkins creek is where I gather a lot of my pigments. Our own little creek feeds into this one.

Find a source

Go to a place that has rocks. I go to our creek. Sedimentary rocks are most often the kind that makes good pigment rocks for me here at Wild Ozark. Sandstone rocks are a good start. Shale works, too. Look around at the rocks.

Pigment rocks after prying out of the dirt.

Look for color

When the rocks are wet, like if they’re actually in the water, the color is easier to see. But you can still find color in dry rocks too. The ones in my hand have a nice terra-cotta color to them even though they’re not wet. We will wet them in the next step, though. Head over to the water.

Very rich in deep, rusty red pigment.

Test your rock

Wet the rock you want to test and then rub it on a larger rock. Does it leave a nice streak of color? The more easily it leaves color, the richer your resulting pigment will be. If it only scratches the larger rock and doesn’t leave color, then throw it out. If it scratches white, unless you’re testing limestone, throw it out. You want a test that produces lots of easy color. Have fun!

Want More?

I host foraging hikes here at Wild Ozark just to demonstrate how to pick good rocks for making paint.

Making Handmade Watercolor Paint from Rocks

If you’ve found some rocks you want to make paint from and need a tutorial, click through to my pages on making handmade watercolor paint. Here’s a few:

I sell things here, too, like actual rocks, pigments ready to start with the washing stage, pigments already washed, watercolor binder, and paints already made.

If you’d like to see the art I’ve created using our Ozark pigments, check out my portfolio page.


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Author/Artist Info
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Madison Woods is a self-taught artist who moved to the Ozarks from south Louisiana in 2005. In 2018 she began experimenting with watercolor painting, using her local pigments. She calls them Paleo Paints, and her artwork features exclusively the lightfast pigments foraged from Madison county, Arkansas. Her inspiration is nature – the beauty, and the inherent cycle of life and death, destruction and regeneration.

Her online portfolio is at www.MadisonWoods.art.

Click here to join her mailing list.

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