About: Cliff mine

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The Cliff mine was the first successful copper mine in the Copper Country of the state of Michigan in the United States. The mine is at the now-abandoned town of Clifton in Keweenaw County. Mining began in 1845, and the Cliff was the most productive copper mine in the United States from 1845 through 1854. Large-scale mining stopped in 1878. The bought the Cliff property and did extensive subsurface exploration from 1903 to 1908, but did not find any new ore bodies worth mining.

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rdf:type	yago:WikicatCopperMinesInTheUnitedStates yago:WikicatMinesInMichigan yago:WikicatUndergroundMinesInTheUnitedStates geo:SpatialThing yago:WikicatSilverMinesInTheUnitedStates yago:Artifact100021939 yago:CopperMine103104147 yago:Excavation103302121 yago:Mine103768346 yago:Object100002684 yago:PhysicalEntity100001930 yago:YagoGeoEntity yago:YagoPermanentlyLocatedEntity weapon yago:SilverMine104220717 yago:Whole100003553
rdfs:label	Cliff mine (en)
rdfs:comment	The Cliff mine was the first successful copper mine in the Copper Country of the state of Michigan in the United States. The mine is at the now-abandoned town of Clifton in Keweenaw County. Mining began in 1845, and the Cliff was the most productive copper mine in the United States from 1845 through 1854. Large-scale mining stopped in 1878. The bought the Cliff property and did extensive subsurface exploration from 1903 to 1908, but did not find any new ore bodies worth mining. (en)
foaf:homepage	http://www.mindat.org/loc-6849.html
geo:lat	47.372993 (xsd:float)
geo:long	-88.313652 (xsd:float)
foaf:depiction
dcterms:subject	Silver mines in the United States Buildings and structures in Keweenaw County, Michigan Copper mines in Michigan Underground mines in the United States
Wikipage page ID	23492567 (xsd:integer)
Wikipage revision ID	1071981661 (xsd:integer)
Link from a Wikipage to another Wikipage	Precambrian Basalt Silver mines in the United States United States Copper mining in Michigan Clifton, Michigan Copper Country Buildings and structures in Keweenaw County, Michigan List of Copper Country mills List of Copper Country mines Copper mines in Michigan Underground mines in the United States Keweenaw County, Michigan Michigan Native copper Marquette County, Michigan Native silver dbr:Cliff_Copper_Company dbr:Pittsburgh_and_Boston_Copper_Harbor_Mining_Company dbr:Tamarack_Mining_Company
Link from a Wikipage to an external page	http://cliffmine.wordpress.com/ http://www.mindat.org/loc-6849.html
sameAs	Cliff mine Cliff mine Cliff mine Cliff mine Cliff mine
dbp:wikiPageUsesTemplate	dbt:About dbt:Citation_needed dbt:Commons dbt:Coord
thumbnail	wiki-commons:Special:FilePath/Cliff_mine.jpg?width=300
georss:point	47.372991666666664 -88.31365277777778
has abstract	The Cliff mine was the first successful copper mine in the Copper Country of the state of Michigan in the United States. The mine is at the now-abandoned town of Clifton in Keweenaw County. Mining began in 1845, and the Cliff was the most productive copper mine in the United States from 1845 through 1854. Large-scale mining stopped in 1878. The Cliff mined a fissure vein of native copper in Precambrian conglomerate and basalt beds. The vein was nearly vertical, dipping steeply to the east, and running north–south, nearly perpendicular to the strike of the enclosing beds. The productive part of the vein was below the Greenstone flow, which forms the cliff from which the mine took its name. The mine started by mining only high-grade ore; in 1848, the average grade mined was 26% copper. The average ore grade mined declined over time, and by 1869 was 3% copper, comparable to other copper mines of the time. Some native silver was also recovered; approximately 41,000 ounces total silver was reported recovered in the years 1846-1852 and 1858-1871. The and its successor the Pittsburgh and Boston Mining Company operated the Cliff mine from 1845 to 1870, then sold the property to the in 1871. The Cliff Copper Company operated the mine from 1872 to 1878. The combined dividends paid by the companies was $2.5 million. The mine was then leased to tributers, who continued minor copper production through 1887. Total production was 38.2 million pounds of refined copper. The bought the Cliff property and did extensive subsurface exploration from 1903 to 1908, but did not find any new ore bodies worth mining. (en)
gold:hypernym	Mine
prov:wasDerivedFrom	wikipedia-en:Cliff_mine?oldid=1071981661&ns=0
page length (characters) of wiki page	3814 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Cliff_mine
geo:geometry	POINT(-88.313652038574 47.372993469238)
is Link from a Wikipage to another Wikipage of	List of copper mines List of copper mines in the United States List of mines in Michigan List of museums in Michigan Copper Harbor, Michigan Copper mining in Michigan Church of the Assumption (Phoenix, Michigan) Clifton, Michigan Copper Country Copper mining in the United States Calumet and Hecla Mining Company Cliff (disambiguation) Bruce Mines List of Copper Country mills List of Copper Country mines List of silver mines
is Wikipage disambiguates of	Cliff (disambiguation)
is foaf:primaryTopic of	wikipedia-en:Cliff_mine

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