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West End Mine (Broderick Mine; Harris Mine; Turkey Hill Mine), Musconetcong Mtn, West Portal, Bethlehem Township, Hunterdon Co., New Jersey, USAi
Regional Level Types
West End Mine (Broderick Mine; Harris Mine; Turkey Hill Mine)Mine
Musconetcong MtnMountain
West Portal- not defined -
Bethlehem TownshipTownship
Hunterdon Co.County
New JerseyState

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Latitude & Longitude (WGS84): 40° 40' North , 75° 0' West
Latitude & Longitude (decimal): 40.66667,-75.00000
GeoHash:G#: dr4xm74st
Locality type:Mine
Köppen climate type:Dfa : Hot-summer humid continental climate
Nearest Settlements:
Asbury273 (2017)3.4km
Hampton1,361 (2017)5.8km
Glen Gardner1,663 (2017)6.0km
Bloomsbury848 (2017)7.4km
Clinton2,657 (2017)8.3km

Ref.: The Iron Mines of New Jersey (1910), Bayley: 11, 295; NJ State Geol. Annual Rpts.: (1879): 63-64; (1880): 109; (1883): 123; (1884): 94; (1885): 104; (1886): 152. An iron mine in magnetite ore located on the North slope of Musconetcong Mtn SW of West Portal (WEst End). Started 1872 and closed July, 1884. Reopened 1885 and closed about 1886. Ore vein was 4,450 feet (1,470 meters) long. Workings featured a 130 foot deep shaft (1872) and a 290 foot deep shaft (1885).

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

3 valid minerals.

Detailed Mineral List:

Formula: CaCO3
Reference: The Iron Mines of NJ (1910), Bayley:294-295.
Formula: ☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Reference: The Iron Mines of NJ (1910), Bayley:294-295.
Formula: Fe2+Fe3+2O4
Reference: The Iron Mines of NJ (1910), Bayley:294-295.
'Mica Group'
Reference: The Iron Mines of NJ (1910), Bayley:294-295.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Group 5 - Nitrates and Carbonates
Group 9 - Silicates
Unclassified Minerals, Rocks, etc.
'Mica Group'-

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Mixtures, etc.
'Mica Group'-

List of minerals for each chemical element

H Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
C CalciteCaCO3
O CalciteCaCO3
O MagnetiteFe2+Fe23+O4
O Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Al Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Si Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Ca CalciteCaCO3
Ca Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
Fe MagnetiteFe2+Fe23+O4
Fe Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2

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

1000 - 1600 Ma

ID: 2972311
Quartz-Oligoclase Gneiss

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Losee Metamorphic Suite

Description: White-weathering, light-greenish-gray, medium- to coarse-grained, moderately layered to indistinctly foliated gneiss and lesser amounts of granofels composed of quartz, oligoclase or andesine, and, locally, biotite, hornblende and (or) clinopyroxene. Contains thin amphibolite layers.

Comments: Losee Metamorphic Suite (Middle Proterozoic) (Drake, 1984) Original map source: Dalton, R.F., Herman, G.C., Monteverde, D.H., Pristas, R.S., Sugarman, P.J., and Volkert, R.A., 1999, New Jersey Department of Environmental Protection, Bedrock Geology and Topographic Base Maps of New Jersey: New Jersey Geological Survey CD Series CD 00

Lithology: Major:{gneiss}, Minor:{granofels,amphibolite}

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]

1000 - 1600 Ma

ID: 3188605
Mesoproterozoic crystalline metamorphic rocks

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Paragneiss; paragneiss

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, used under Creative Commons Attribution 4.0 License

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