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The Martian Chronicles

Sol 2410-2412: Grains, up close!

21 May 2019, 00:00 UTC
Sol 2410-2412: Grains, up close!
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Image taken by the Mars Hand Lens Imager (MAHLI), on Sol 2409 at 09:18:51 UTC. It shows the target Dunoon. This image is about 45 mm by 34 mm.

Curiosity is continuing the investigations at ‘Rigg.’ The image in this update shows a close up taken by the MAHLI Hand Lens imager to allow the detailed investigation of the materials that make up the field of ripples. Things the team is looking for are grain size and grain size distribution, and the shape of the grains. In addition to that the colour and lustre of the different grain varieties are of interest to allow us to analyse the variation of phases in the sand. One feature to note, for example, are the pinkish grains on the surface, which appear to be larger than all others.
Tosol‘s plan is a three-sol plan with many activities imaging the sand ripples and investigating their chemistry. APXS will measure the targets ‘Nairn’ and ‘Ellon,’ to investigate the differences of the different soil colours and grain sizes. ChemCam‘s plans include the soil targets ‘Seafield Tower,’ ‘Saltire’ and ‘Selkirk,’ whereby Seafield Tower and Saltire are on ripple crests and Selkirk is on a ripple ...

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