The Santos coffees are the best, gleaning their flavour from the iron-rich soil in which they are grown.

Outlines of the city's architecture are readily mapped because the nonmagnetic limestone foundations stand out clearly from the surrounding iron-rich soils.

It grows on iron-rich soils on underlying shale derived clay, and recovers effectively from wildfires.

Wild birds usually appear soiled with a rusty or brown shade to the white plumage, derived from mud or iron-rich soil.

Mr. Rawlyk pointed out woody areas full of volcanic boulders and explained that the region's name came from its acidic, iron-rich soil.

But that damp climate, and the lack of the native iron-rich volcanic soil, is not conducive to breeding.

What he had taken for dirt at first was too dark and claylike to be the loose, iron-rich soil beneath his horse's hooves.

The reserve is a remnant of the natural state of the Sharon plain, rich in flora that grows well in iron-rich soil.

The plateau is also known as Terre de barre after its reddish, iron-rich soil.

The island's iron-rich natural soil made metal detectors an impractical way to find buried bombs.