Assertion: mineral | /r/HasProperty | grouped
Facets:
value: together
type: MANNER
value: according to characteristics such as hardness
type: CAUSE
Source sentences:
text: These minerals are grouped together because they all have so-called simple anions.
text: Minerals were grouped according to characteristics such as hardness, so that diamond and corundum would be in the same class of minerals.
text: A chemical classification system meant that minerals that were grouped together theoretically also tended to appear with each other in rocks since they tended to develop under similar geochemical conditions.