As if on cue, an old car with more rust than clear metal chugged to a stop at the dollar store.
A blue-green tint shone through the sunlight while frozen waterfalls, hanging from the upstream cliffs, bore a hint of the rust-orange hue from the natural deposits of Red Mountain above.
Iron rust sometimes contains magnetite.
Many substances were employed in ancient medicine: galena was the basis of a valuable Egyptian cosmetic and drug; the arsenic sulphides, realgar and orpiment, litharge, alum, saltpetre, iron rust were also used.
Inch of concrete to preserve them from damage by rust or fire.
Other examples in which buff or rust-colour predominates have also been deemed distinct, and to those has been applied the epithet russata.
It is not brittle like porcelain and cast iron, not poisonous like lead-glazed earthenware and untinned copper, needs no enamel to chip off, does not rust and wear out like cheap tin-plate, and weighs but a fraction of other substances.
Owing to the presence of oily globules of an orange-yellow or rusty-red colour in their hyphae and spores they are termed Rust-Fungi.
20 (1906); Ward, "The Brooms and their Rust Fungus," Ann.
The absence of iron and the abundance of bronze in the relics of a prehistoric people is a piece of evidence to be accepted with caution, because the great defect of iron, its proneness to rust, would often lead to its complete disappearance, or conversion into an unrecognizable mass, even though tools of bronze originally laid down beside it might remain but little corroded.
Copper rust has the same composition as malachite; it results from the action of carbon dioxide and water on the metal.
Rust, in their cell-walls.
If the rust so covered up has not begun to pit the iron the chances are that it will do no harm; but, if it is already well developed and of some thickness, it will have enough oxidizing agents in its pores to develop more oxide, and to swell up and crack the paint.
The following are the requirements of the New York building law in regard to the protection of iron or steelwork against corrosion, &c.: " All structural metal-work shall be cleaned of all scale, dirt and rust, and be thoroughly coated with one coat of paint.
Throughout this time, Borlaug constantly battled wheat's arch-nemesis: rust, a fungus that feeds on wheat, oats, and barley.
And although rust was highly adaptive, by making ten or so different wheat varieties resistant to different forms of rust, Borlaug helped farmers reduce the risk of crop loss to a minimum.