December 5, 2024 
                     
                    Some minerals observed on Mars today might have developed in liquid CO₂
 
 Some minerals seen on Mars today may have formed in liquid CO₂ instead of water (Image Credit: Phys.org) 
 At left: Steel is seen to corrode into siderite (FeCO3) when immersed in subcritical liquid carbon dioxide (LCO2). At
                          
                                                                            
