Lake Superior copper district

URI: https://gptkb.org/entity/Lake_Superior_copper_district
GPTKB entity
Statements (31)
Predicate Object
gptkbp:instanceOf gptkb:cryptocurrency
gptkbp:archaeologicalSignificance prehistoric copper mining
gptkbp:culturalHeritage Finnish-American community
Cornish-American community
gptkbp:featureType gptkb:Midcontinent_Rift_System
gptkbp:historicalSignificance oldest metal mining region in North America
https://www.w3.org/2000/01/rdf-schema#label Lake Superior copper district
gptkbp:knownFor native copper deposits
gptkbp:locatedIn gptkb:Michigan
gptkb:United_States
gptkbp:locatedOn gptkb:Keweenaw_Peninsula
gptkbp:majorCity gptkb:Houghton
gptkb:Calumet
gptkbp:majorMine gptkb:Quincy_Mine
Calumet and Hecla Mine
Copper Falls Mine
gptkbp:mineralProduced copper
gptkbp:miningDeclined 1960s
gptkbp:miningMethod underground mining
open pit mining
gptkbp:miningStarted 1840s
gptkbp:nearby gptkb:Lake_Superior
gptkbp:notableCompany gptkb:Calumet_and_Hecla_Mining_Company
gptkb:Copper_Range_Company
gptkb:Quincy_Mining_Company
gptkbp:partOf gptkb:Copper_Country
gptkbp:touristAttraction gptkb:Keweenaw_National_Historical_Park
gptkb:A.E._Seaman_Mineral_Museum
gptkb:Quincy_Mine_Hoist
gptkbp:bfsParent gptkb:Quincy_Mine
gptkbp:bfsLayer 7