Pahaquarry Copper Mine
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The Pahaquarry Copper Mine is an abandoned
copper mine Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, loca ...
located on the west side of
Kittatinny Mountain Kittatinny Mountain (Lenape: Kitahtëne) is a long ridge traversing primarily across Sussex County in northwestern New Jersey, running in a northeast-southwest axis, a continuation across the Delaware Water Gap of Pennsylvania's Blue Mountain ...
presently in Hardwick Township in
Warren County Warren County is the name of fourteen counties in the USA. Some are named after General Joseph Warren, who was killed in the Battle of Bunker Hill in the American Revolutionary War: * Warren County, Georgia * Warren County, Illinois * Warren County ...
,
New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
in the United States. Active mining was attempted for brief periods during the mid-eighteenth, mid-nineteenth, and early twentieth centuries but was never successful despite developments in mining technology and improving mineral extraction methods. Such ventures were not profitable as the ore extracted proved to be of too low a concentration of
copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...
. This site incorporates the mining ruins, hiking trails, and nearby waterfalls, and is located within the
Delaware Water Gap National Recreation Area Delaware Water Gap National Recreation Area is a national recreation area administered by the National Park Service in northwest New Jersey and northeast Pennsylvania. It is centered around a stretch of the Delaware River designated the Middl ...
and administered by the
National Park Service The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, most national monuments, and other natural, historical, and recreational propert ...
. It was added to the
National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...
in 1980 as a contributing property to the Old Mine Road Historic District. With Local tradition and several early historians recount legends of seventeenth-century Dutch miners searching for copper in the
Minisink The Minisink or (more recently) Minisink Valley is a loosely defined geographic region of the Upper Delaware River valley in northwestern New Jersey (Sussex and Warren counties), northeastern Pennsylvania ( Pike and Monroe counties) and New York ...
region and commencing mining operations at this location before 1650. In order to bring this ore to market, the miners are alleged to have built a road, the
Old Mine Road Old Mine Road is a road in New Jersey and New York said to be one of the oldest continuously used roads in the United States of America. At a length of , it stretches from the Delaware Water Gap National Recreation Area to the vicinity of Kings ...
linking these mines near the
Delaware Water Gap Delaware Water Gap is a water gap on the border of the U.S. states of New Jersey and Pennsylvania where the Delaware River cuts through a large ridge of the Appalachian Mountains. The gap makes up the southern portion of the Delaware Water Gap ...
with
Kingston, New York Kingston is a city in and the county seat of Ulster County, New York, United States. It is north of New York City and south of Albany. The city's metropolitan area is grouped with the New York metropolitan area around Manhattan by the United ...
. This tradition has been refuted by recent research, and it is thought the road has no connection with the mines but was built as Dutch families from New York settled the Minisink in the Eighteenth Century. The earliest evidence of mining at Pahaquarry is 1740 with a brief venture funded by John Reading, Jr. Later attempts in the middle of the nineteenth century and a renewed effort during the early years of the twentieth century were brief and likewise unsuccessful.


History


Legends about Dutch miners

There are several legends associated with this mine that have been discredited by historians and archaeologists, notably Herbert C. Kraft. One legend claims that the Lenape worked the mine even before European settlers arrived. However, archeological and scientific testing show that the copper artifacts from the area originated from major
native copper Native copper is an uncombined form of copper that occurs as a natural mineral. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements. Native coppe ...
mines in
Isle Royale Isle Royale National Park is an American national park consisting of Isle Royale – known as Minong to the native Ojibwe – along with more than 400 small adjacent islands and the surrounding waters of Lake Superior, in the state of Michigan. ...
and the Keweenaw Peninsula Michigan. Another legend claims that early
Dutch Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People E ...
settlers of
New Netherland New Netherland ( nl, Nieuw Nederland; la, Novum Belgium or ) was a 17th-century colonial province of the Dutch Republic that was located on the east coast of what is now the United States. The claimed territories extended from the Delmarva P ...
in the 1650s discovered and worked the mine in Lenape territory. This then leads to the legend that the Dutch built the
Old Mine Road Old Mine Road is a road in New Jersey and New York said to be one of the oldest continuously used roads in the United States of America. At a length of , it stretches from the Delaware Water Gap National Recreation Area to the vicinity of Kings ...
stretching to
Esopus, New York Esopus ( ) is a town in Ulster County, New York, United States. The population was 9,041 at the 2010 census. The town was named after the local indigenous tribe and means "small river" in English. They were one of the Lenape (Delaware) bands, b ...
to transport the ore. While the nearby roadside
historical marker A commemorative plaque, or simply plaque, or in other places referred to as a historical marker, historic marker, or historic plaque, is a plate of metal, ceramic, stone, wood, or other material, typically attached to a wall, stone, or other ...
repeats these claims, no hard evidence has been found to support either one. Many references to this mining area continue to repeat these old legends as fact.


Mining ventures 1750-1910

The Pahaquarry mine site was operated for three brief periods of mining activity. The earliest documented reports are from the 1750s, when John Reading, Jr. and his partners purchased land along the Mine Brook in early Walpack Township along the Delaware River in northwestern New Jersey. Reading, a prominent surveyor and land investor and member of the Provincial Council, served as the New Jersey colony's
acting governor An acting governor is a person who acts in the role of governor. In Commonwealth jurisdictions where the governor is a vice-regal position, the role of "acting governor" may be filled by a lieutenant governor (as in most Australian states) or an ...
in 1747, and from 1757–1758. By 1760, the venture was a failure and mining activity ceased. The next attempt began with the formation of the Alleghany Mining Company in 1847 by a group of men from
Flemington, New Jersey Flemington is a borough in and the county seat of Hunterdon County, in the U.S. state of New Jersey.Belvidere, New Jersey Belvidere is a town in Warren County, in the U.S. state of New Jersey. As of the 2010 U.S. census, the town's population was 2,681,Nathaniel S. Keith was new and untested. New ore was not dug until 1911, and stopped after three months, producing perhaps only three ingots of refined copper. The last of the mining equipment was removed in 1928, ending copper mining in the area. From 1925 to 1972, the area was a camp for the George Washington Council (now merged and part of Central New Jersey Council) of the
Boy Scouts of America The Boy Scouts of America (BSA, colloquially the Boy Scouts) is one of the largest scouting organizations and one of the largest youth organizations in the United States, with about 1.2 million youth participants. The BSA was founded ...
. The land was then purchased by the United States Army Corps of Engineers in preparation for the building of the controversial Tocks Island Dam project.


Geology

The copper ore deposit found here is the grayish mineral
chalcocite Chalcocite (), copper(I) sulfide (Cu2S), is an important copper ore mineral. It is opaque and dark gray to black, with a metallic luster. It has a hardness of 2.5–3 on the Mohs scale. It is a sulfide with a monoclinic crystal system. ...
(copper sulfide) embedded in a hard gray
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...
band of the Bloomsburg Red Beds. The similar color and low ore yield make visual identification difficult. Secondary minerals that can be seen include green
malachite Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green-banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fracture ...
and blue-green
chrysocolla Chrysocolla ( ) is a hydrated copper phyllosilicate mineral and mineraloid with formula (x<1) or . The structure of the mineral has been questioned, as a 2006 spectrographic study suggest material identified as ...
. Between 1903 and 1906, Dr. Keith reported an average yield of 3.25% copper using 100 samples. In 1943, the
United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...
reported yields of 0.11% to 0.38% copper and recommended that no more work be done at Pahaquarry.


See also

*
Delaware Water Gap National Recreation Area Delaware Water Gap National Recreation Area is a national recreation area administered by the National Park Service in northwest New Jersey and northeast Pennsylvania. It is centered around a stretch of the Delaware River designated the Middl ...
*
Old Mine Road Old Mine Road is a road in New Jersey and New York said to be one of the oldest continuously used roads in the United States of America. At a length of , it stretches from the Delaware Water Gap National Recreation Area to the vicinity of Kings ...
*
Tocks Island Dam Controversy A 1950s proposal to construct a dam near Tocks Island across the Delaware River was met with considerable controversy and protest. Tocks Island is located in the Delaware River a short distance north from the Delaware Water Gap. In order to co ...
*
Sussex County, New Jersey Sussex County is the northernmost county in the State of New Jersey. Its county seat is Newton.Warren County, New Jersey Warren County is a county located in the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 109,632, representing an increase of 940 (0.9%) from the 108,692 residents counted at the 2010 census. The county bord ...


References


Bibliography

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Further reading

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External links


National Park Service: Delaware Water Gap National Recreation Area



New York New Jersey Trail Conference: Coppermines Trail


{{authority control Delaware Water Gap National Recreation Area Hardwick Township, New Jersey Pre-statehood history of New Jersey Mines in New Jersey Geography of Warren County, New Jersey Underground mines in the United States Copper mines in the United States National Register of Historic Places in Warren County, New Jersey Historic district contributing properties in New Jersey