Existing equipment within the Curiosity rover isn't suitable for determining whether they actually are organic, but the team suspect this is likely the case. Experiments on Earth, and data from a robotic chemistry lab contained within the Curiosity rover indirectly point to the presence of organic salts on Mars, he said. Another instrument on the Curiosity rover, called the Chemistry and Mineralogy Instrument (Chemin) may be able to spot organic salts in high enough quantities. So far, since arriving on Mars in 2012, CheMin has not detected organic salts. The second part of the ExoMars mission, delayed to 2022 due to coronavirus, will deliver a rover to Mars' surface.

Source: Daily Mail May 21, 2021 14:12 UTC