Sand from a painted desert
Posted: Sat Sep 21, 2019 7:30 pm
There are painted deserts, made of sandstone, and here is a sample. The sand as collected ("initial sand") contained tiny dust particles as well as larger particles taken on my compound microscope (sorry, not a sharp image).
After wet sieveing, the sand is "cleaner" from dust; to the naked eye, there are four uniform colors, all "pastel"-like: pink, yellow, dark grey and magenta. And they are still very fine sands. The cleaned samples were imaged on the stereoscope, 10X magnification, with my eyepiece camera. Single images, resized.
After wet sieveing, the sand is "cleaner" from dust; to the naked eye, there are four uniform colors, all "pastel"-like: pink, yellow, dark grey and magenta. And they are still very fine sands. The cleaned samples were imaged on the stereoscope, 10X magnification, with my eyepiece camera. Single images, resized.