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Sparta Mine, Ossining (Sing Sing), Westchester Co., New York, USA

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Latitude & Longitude (WGS84): 41° 8' 60'' North , 73° 51' 45'' West
Latitude & Longitude (decimal): 41.15000,-73.86250
GeoHash:G#: dr76p5nup
Locality type:Mine
Köppen climate type:Cfa : Humid subtropical climate

An old lead and silver mine located about 1 mile (1.6 km) south of the Ossining railroad station.

Stearns (1852) gives a brief history of the mine:
"Mr. Sampson Simpson...obtained many valuable mining rights from individuals and the Crown of Great Britain...the silver mine at Sing Sing, Westchester County, New York, [was] very extensively worked and proved exceedingly rich. [This] mine yielded a large quantity of native silver, some portions of which may now be seen at the office of Sampson Simpson, Esq., No. 13 Beekman Street, New Tore.

As a large number of the stockholders of this silver mine at Sing Sing, belonged to the British Army at the commencement of the Revolutionary War, and as its location was very much exposed, the operations upon it were suspended at that time. The tools, smelting house and other buildings were removed by the Continental Army to West Point, and the latter were made to serve for barracks during the war. It was, therefore, solely on account of these circumstances, and not from a scarcity of metal that this work was discontinued. It is certainly to be hoped that some enterprising individuals will again open these mines, and render their untold wealth useful to mankind, as well as profitable to their present proprietor."

The information above was probably based on promotional literature meant to attract investors in the mine and should be read skeptically. The History of Westchester (https://books.google.com/books?id=L0I4AQAAMAAJ&pg=PA324&lpg=PA324&dq=sparta+mine+sing+sing&source=bl&ots=FikvSGWWM_&sig=bo5Z8D5kmZzqiJO9lgMJljnArpo&hl=en&sa=X&ved=0ahUKEwi2gqm62t_PAhVIOj4KHdhtA-wQ6AEIOzAG#v=onepage&q&f=false) reports that the mining started when a copper vein was found in 1820. But they only followed 30' of the vein before it ran out and extensive exploration by the company failed to yield any economic quantities of copper. This locality was probably an early get-rich-quick investment scheme typical of the time period.

Mineral List

13 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

Early Ordovician - Early Cambrian
470 - 541 Ma

ID: 2809342
Inwood Marble

Age: Paleozoic (470 - 541 Ma)

Stratigraphic Name: Inwood Marble

Description: Dolomite marble, calc-schist, granulite, and quartzite, overlain by calcite marble; grades into underlying patchy Lowerre Quartzite of Early Cambrian age.

Comments: part of Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents up to 4000 ft. (1200 m).

Lithology: Major:{marble}, Minor:{calc silicate schist,granulite,quartzite}

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]

Early Ordovician - Cambrian
470 - 541 Ma

ID: 3189854
Paleozoic sedimentary rocks

Age: Paleozoic (470 - 541 Ma)

Lithology: Carbonate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Stearns, Charles (1852): The First Mining Operations in North America. Merchant's Magazine, vol. 27, pp. 747-749.
Rocks & Minerals (1938): 13: 99.
The History of Westchester (1886), page 324

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