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No Blueberries in Bagnold Dune, Mars
Thursday, March 30, 2017 8:45
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Last updated on March 31, 2017
Nature journal article: “Opportunity’s spectrometers and camera indicate that the martian haematite is pure, crystalline and grey. In contrast, the Utah concretions are mostly quartz, with brownish-black haematite cement as a secondary component. Consequently, the infrared spectrum that alerted us to haematite on Mars is unlikely to match a quartz-dominated spectrum from the Utah concretions.” Quoted from the seventh paragraph in
Nature journal article: “Opportunity’s spectrometers and camera indicate that the martian haematite is pure, crystalline and grey. In contrast, the Utah concretions are mostly quartz, with brownish-black haematite cement as a secondary component. Consequently, the infrared spectrum that alerted us to haematite on Mars is unlikely to match a quartz-dominated spectrum from the Utah concretions.” Quoted from the seventh paragraph in
http://www.nature.com/nature/journal/v429/n6993/full/429707a.html
However, sands in Bagnold Dune contain very little haematite (0.5%) and quartz (0.7%), according to http://www.unmannedspaceflight.com/index.php?s=b875b7d2156c3db325c0a8b50d35289f&showtopic=7534&view=findpost&p=231938
So, Bagnold Dune is unlikely to have many Martian Blueberries or Moqui Marbles. Only ooids can be the small spheres found in Bagnold Dune, as carbonates may have been burned up by perchlorate on Mars (Seehttp://wretchfossil.blogspot.tw/2017/02/perchlorate-foiled-detection-of.html
and http://wretchfossil.blogspot.tw/2017/03/all-martian-spheres-were-produced-by.html).
and http://wretchfossil.blogspot.tw/2017/03/all-martian-spheres-were-produced-by.html).
Posted Yesterday by Wretch Fossil
Source: http://wretchfossil.blogspot.com/2017/03/chemical-difference-between-martian.html
