Sand from a painted desert

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Hobbyst46
Posts: 2157
Joined: Mon Aug 21, 2017 9:02 pm

Sand from a painted desert

#1 Post by Hobbyst46 » 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.
Attachments
Initial sand. 2.5X0.08 Plan..jpg
Initial sand. 2.5X0.08 Plan..jpg (139.92 KiB) Viewed 1146 times
Sand no 1 yellow, 10X.jpg
Sand no 1 yellow, 10X.jpg (128.47 KiB) Viewed 1146 times
Sand no 2 pink, 10X.jpg
Sand no 2 pink, 10X.jpg (136.25 KiB) Viewed 1146 times
Sand no 3 grey, 10X.jpg
Sand no 3 grey, 10X.jpg (132.81 KiB) Viewed 1146 times
Sand no 4 magenta, 10X.jpg
Sand no 4 magenta, 10X.jpg (162.01 KiB) Viewed 1146 times
Zeiss Standard GFL+Canon EOS-M10, Olympus VMZ stereo

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