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micro_pix
Joined: 11 May 2012
Posts: 141
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 Posted: Sat Feb 10, 2018 1:02 pm Post subject: Red Namibian sand |
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Here are some grains of red sand from the Namibian desert.
It's mostly quartz that has a fine coating of "Hematite", a red oxide of iron. You can see thicker areas of the iron oxide in the crevices on the grains.
I used incident light and low intensity transmitted cross polarised light. It's a stacked image with the background cleaned up in photoshop.
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Sumguy01
Joined: 28 Jan 2013
Posts: 1119
Location: Ketchikan Alaska USA
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| Posted: Sat Feb 10, 2018 2:23 pm Post subject: |
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 Very nice.
Thanks for sharing. |
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leonardturner
Joined: 14 Mar 2013
Posts: 421
Location: Atlanta, GA, USA
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| Posted: Sun Feb 11, 2018 4:17 am Post subject: |
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Imaginative lighting, great result!
Leonard |
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ChrisR
Site Admin
Joined: 14 Mar 2009
Posts: 7787
Location: Near London, UK
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| Posted: Sun Feb 11, 2018 4:31 am Post subject: |
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Super!
_________________
Chris R |
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micro_pix
Joined: 11 May 2012
Posts: 141
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| Posted: Sun Feb 11, 2018 6:41 am Post subject: |
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Thanks for the comments.
David |
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carlos.uruguay
Joined: 23 Feb 2012
Posts: 4971
Location: Uruguay - Montevideo - America del Sur
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| Posted: Thu Feb 15, 2018 5:09 am Post subject: |
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| NIce! |
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