The largest community on Planet Malachite is the imaginatively named Peridot City, which grew from an area cleared by repeatedly landing spheroid dropships to clear the vegetation below. Ironically this was one example of the landing of the dropship being more valuable than the cargo aboard the dropship.
The initial site was concreted over to stop regrowth, and a ring of bunker-like initial buildings (and basements) were constructed around the cleared and concreted landing zone. Providing adequate drainage proved to be the greatest technical challenge to the entire effort. After the initial ring, the surrounding buildings were mostly constructed on stilts to protect the buildings from the aggressively growing plant-life of the world, and using a mixture of locally sources materials (wood) for dwellings and shops, and using more advanced materials where needed (for utilities, etc).
Peridot City is vital to Malachite as it includes the planets largest shipyard and port, the overwhelming majority of manufacturing capability, and the only permanent landing strips on the planet. The only HPG facility on the planet is located in a ComStar enclave in Peridot City.