Assertion: magnetite | /r/HasProperty | important
Facets:
value: widely
type: DEGREE
value: in understanding the conditions
type: OTHER
Source sentences:
text: Magnetite has been important in understanding the conditions under which rocks form.
text: This hard, black substance is magnetite, an important ore of iron and a very interesting substance in its own right, which will be considered further in connection with magnetism, where its structure will be explained.
text: Magnetite and hematite are important oxides of iron.
text: Magnetite is important widely due to its magnetic properties.