Lunar Dust Is a Mechanical Problem, Not a Geology One
The next landers are not worried about what the dust is made of. They are worried about what it does to seals, radiators, and suit joints after a few weeks.
Apollo crews came home with gray powder ground into every hinge. The sample science is mostly done. The unsolved problem for a sustained lunar presence is mechanical: regolith is abrasive, electrostatically sticky, and small enough to walk through filters that work fine on Earth. It scores bearings, coats radiator surfaces so they stop rejecting heat, and turns a suit bearing into sandpaper.
That is why 2026 lander and habitat work talks more about brushes, magnetic traps, and airlock geometry than about mineralogy. NASA and the commercial lander teams are designing around the assumption that dust will get in. The question is how much hardware you can afford to treat as consumable, and how you keep a radiator from becoming a thermal insulator after a month of EVA traffic.
Earth analogies fail in a specific way. Desert dust is weathered and often rounded. Lunar dust is shattered glass with no atmosphere to dull the edges, and it charges in sunlight so it leaps onto surfaces you did not touch. Weather prediction on Mars is about storms you can see. Dust on the Moon is about the grain you cannot, sitting in a seal you will not notice until it leaks.