Assertion: cobalt | /r/HasProperty | concentrated in manganese hydroxides
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: In both the first, widely distributed type (silicate-nickel ore; about 0.1 percent cobalt), and the second, rare type (oxidized sulfur ores; 1–4 percent cobalt), the cobalt is usually concentrated in manganese hydroxides (asbolites) of variable composition, with which cobalt hydroxides and carbonates combine in the zone of oxidation.