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Dickerson Mine, Succasunna, Randolph Township, Morris Co., New Jersey, USA

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Latitude & Longitude (WGS84): 40° 51' 60'' North , 74° 37' 60'' West
Latitude & Longitude (decimal): 40.8666648865, -74.6333312988


An iron mine in magnetite ore located about 3 miles SW of Dover. Started 1710 - 1713, reopened about 1860, worked 1862-1877, 1877-1891, 1905-Jan, 1908. This was one of the major iron mines in New Jersey and produced an estimated 1,000,000 tons of ore. The workings featured a shaft 1,300 feet (400 meters) deep. When reopened in 1905, the mine exploited new veins. Interestingly, the town of "Succasunna" means "black rock" in the local Lenni Lenape Indian language, in allusion to the magnetite deposits.

Mineral List


4 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Middle Cambrian - Early Cambrian
501 - 541 Ma
Leithsville Formation

Age: Cambrian (501 - 541 Ma)

Stratigraphic Name: Leithsville Formation

Description: (Wherry, 1909) - Light- to dark-gray and lightolive-gray, fine- to medium-grained, thin- to medium-bedded dolomite. Grades downward through medium-gray, grayish-yellow, or pinkish-gray dolomite and dolomitic sandstone, siltstone and shale to medium-gray, medium-grained, medium-bedded dolomite containing quartz sand grains as stringers and lenses near the base. Lower contact gradational. Thickness ranges from 0 to 56 m (0-185 ft) due to erosion.

Lithology: Major:{dolostone}, Minor:{sandstone,siltstone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

The Iron Mines of New Jersey (1910), Bayley:358-362; NJ State Geol. Annual Rpts.: (1855):215-220; (1868):570-574; (1873):43; (1879):51-52; (1880):105-106; (1882):70; (1883):100-103; (1884):83; (1885):99; (1886):140; (1890):59-60; (1891):242 & 251-253; (1905):320.
USGS Professional Paper 287, 1958, PP 126-128

Mineral and/or Locality  
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