Assertion: amber | /r/HasProperty | mined
Facets:
value: extensively
type: DEGREE
value: from tertiary glauconite sands
type: LOCATION
value: systematically
type: MANNER
Source sentences:
text: After 1945, this territory around Königsberg was turned into Kaliningrad Oblast, Russia, where amber is now systematically mined.
text: Amber is abundant along the shores of the Baltic Sea where it is mined extensively from Tertiary glauconite sands that are from 40 million to 60 million years old.