TL;DR: Martian Water Ice is a main entry in the 外星矿物知识引擎 database.
Mars Reconnaissance Orbiter discovered extensive subsurface water ice at mid-latitudes, accessible within 1-2 meters of the surface. This is the critical resource enabling human Mars exploration and eventual settlement.
Location
Mars subsurface (mid-latitudes and poles); exposed at scarps
Estimated Quantity
Millions of km³ at poles; extensive subsurface deposits
Extraction Method
Drilling and sublimation; warm regolith extraction
Economic Value
Essential for human Mars missions