Fields' Copper Mine (Field Mine), Warrenville, Warren Township, Somerset County, New Jersey, USAi
Regional Level Types | |
---|---|
Fields' Copper Mine (Field Mine) | Mine |
Warrenville | Town |
Warren Township | Township |
Somerset County | County |
New Jersey | State |
USA | Country |
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Latitude & Longitude (WGS84):
40° 36' 54'' North , 74° 29' 21'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Warren Township | 15,311 (2012) | 2.5km |
Dunellen | 7,431 (2017) | 3.2km |
Watchung | 5,916 (2017) | 4.1km |
Middlesex | 13,934 (2017) | 4.7km |
North Plainfield | 22,140 (2017) | 5.5km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
New Jersey Mineralogical Society, Inc | Mountainside, New Jersey | 13km |
Morris Museum Mineralogical Society | Morristown, New Jersey | 20km |
North Jersey Mineralogical Society, Inc. | Paterson, New Jersey | 43km |
New York Mineralogical Club | New York, New York | 46km |
Mindat Locality ID:
12524
Long-form identifier:
mindat:1:2:12524:1
GUID (UUID V4):
f5b7235e-9f04-462f-a40e-f6d63b416ce8
A copper mine located near Warrenville and about 4Β½ miles NNW of Bound Brook. Deposit is in green, gray & black carbonaceous shale. Featured a shaft. No specific species listed but fossils are cited as occurring here. NOTE: The description of the shale is consistent with the hornfelsic sedimentary rocks immediately underlying the Watchung basalt and commonly host to copper mineralization. This locality is near the Pluckemin and American copper mines.
As with many older sites the descriptions are often vague and need to be taken with caution. There is no evidence that the bed(s) that host the copper immediately beneath the Orange Mountain Basalt were either carbonaceous or a hornfels (except for the inch or two immediately beneath the basalt). However, the Washington Valley is underlain by the Feltville Formation which contains a prominent carbonaceous unit, the Washington Valley member. There are a small number of copper occurrences associated with both the breccias at the upper contact of the Orange Mountain basalt and the carbonaceous shale (and locally limestone) that closely overly the basalt. Copper deposition is probably localized where fractures transecting the basalt had a relatively high permeability. Some of the connate brines from Passaic Formation, which were responsible for the Chimney Rock, American and other copper deposits, reached the upper contact of the OMB with enough copper intact to permit deposition of minor amounts. Copper deposition required chemical reduction of sulphate to sulphide. In the basalt the reduction was accomplished by the oxidation of ferrous iron to ferric iron, just like at the lower contact of the OMB. In the Washington Valley member copper deposition probably resulted from a reaction of the oxidized copper-bearing fluid with either pyrite or sulphate reducing bacteria in the shale. This is the typical deposition mechanism in Red Bed Type copper deposits.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
4 valid minerals.
Detailed Mineral List:
β Calcite Formula: CaCO3 |
β Chalcocite Formula: Cu2S References: |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Silver Formula: Ag |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Silver | 1.AA.05 | Ag |
Group 2 - Sulphides and Sulfosalts | |||
β | Chalcocite | 2.BA.05 | Cu2S |
Group 5 - Nitrates and Carbonates | |||
β | Calcite | 5.AB.05 | CaCO3 |
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | β Calcite | CaCO3 |
C | β Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | β Calcite | CaCO3 |
O | β Malachite | Cu2(CO3)(OH)2 |
S | Sulfur | |
S | β Chalcocite | Cu2S |
Ca | Calcium | |
Ca | β Calcite | CaCO3 |
Cu | Copper | |
Cu | β Chalcocite | Cu2S |
Cu | β Malachite | Cu2(CO3)(OH)2 |
Ag | Silver | |
Ag | β Silver | Ag |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Laurentides DomainDomain
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