Assertion: beryllium | /r/AtLocation | some 30 mineral species
Facets:
Source sentences:
text: Beryllium is found in some 30 mineral species, the most important of which are bertrandite, beryl, chrysoberyl, and phenacite.
text: Beryllium is found in some 30 mineral species, the most important of which are bertrandite, beryl, chrysoberyl, and phenacite.