Sentences with phrase «rare type of rock»

Not exact matches

Analysis of the Almahata Sitta meteorite reveals that it is an achondrite, a rare type of space rock that comes from celestial bodies that are large enough to generate internal heat early in their history so as to produce metallic cores surrounded by rock.

The meteorite is an achondrite, a relatively rare type of space rock that comes from a planet or big asteroid — something large that generated enough internal heat early in its history to melt partially, producing a metallic core surrounded by rock.

It is home to over 800 koalas, many types of bird and the rare wild rock wallaby.

Ironically for our green friends, the ore comes from a type of rock called «carbonatite» which is a relatively rare and unusual type of igneous rock composed primarily of carbonate minerals.