However, asbestos are known carcinogens, and cause various other illnesses, such as asbestosis; amphibole asbestos ( anthophyllite, tremolite, actinolite, grunerite, and riebeckite ) are considered more dangerous than chrysotile serpentine asbestos.
12.
The Roundtop Mountain Greenstone is predominantly greenstone, greenschist, and amphibolite, but also includes mica schist, hornblende-mica schist, and metabasalt, accompanied by minor metagreywacke, metatuff, chlorite schist, tremolite-actinolite schist and rare grunerite schist.
13.
The general stratigraphy of the belt is, from base upwards, a thick sequence of felsic orthogneiss composed of fragmental to glomerocrystic feldspar gneiss, known as the footwall felsic sequence; the ultramafic units of komatiite affinity,'overlain'by grunerite-magnetite-quartz-amphibole banded iron formation of the Honman Formation, tholeiitic basalt and metasedimentary rocks.
