Gap Nickel Mine
Georgetown, Pennsylvania
39.9564°N 76.0829°W
Mine Overview
The Gap Nickel Mine is in Georgetown, Pennsylvania. Historically the site has been part of the Lancaster Area. The site was first discovered in 1718. The Gap Nickel Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. The ore mined is composed of chalcopyrite, pentlandite and pyrite. The host rock in this area is norite. The Piedmont Upland of the Appalachian Highlands characterize the geomorphology of the surrounding area.
Site identification and general characteristics. Learn about USGS mines.
Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Nickel Metallic Primary
- Cobalt Metallic Secondary
- Copper Metallic Secondary
Deposit
GAP DEPOSIT CONSISTS OF LENSES OF MASSIVE SULFIDES SURROUNDED BY ZONES OF DISSEMINATED SULFIDES NEAR THE BASE OF A TROUGH-SHAPED INTRUSION OF NORITE OR GABBRO, 2000 FEET LONG AND AS MUCH AS 800 FEET WIDE, THAT HAS BEEN METAMORPHOSED TO AMPHIBOLITE AFTER UNSUCCESSFUL ATTEMPTS TO MINE COPPER, IN 1852, IT WAS DISCOVERED THAT PYRRHOTITE, THROWN ON THE DUMPS AS WORTHLESS, CONTAINES MORE THAN 1% NICKEL. : UPDATE BY GLENN L. SHAFFER-1/75, RESERVES AND POTENTIAL RESOURCES. FURTHER UPDATE ON 7/75 TO SAME FIELDS.; INFORMATION SOURCE: 1 PUB LIT.
Location Info
- Lancaster , Pennsylvania County / State
- Continent Country State County
- North America The United States Pennsylvania Lancaster
Geology
ORE MINERALS OCCUR ALONG CONTACT OF A METAMORPHOSED GABBRO MASS WITH PRECAMBRIAN MICA SCHIST. ORE DESCRIBED AS SIMILAR TO THAT AT SUDBURY, ONTARIO.
Physiography
Physiographic area where the resource is found.
- Division Province? Section
- Appalachian Highlands Piedmont Province Piedmont Upland
Reserve-resource
RESERVES UNKNOWN; MINE FULL OF WATER; EXPLORATION IN 1942 INDICATED MODERATE AMOUNT OF MATERIAL CONTAINING 0. 7% NICKEL AND 0. 4% COPPER. POOR INFORMATION REGARDING GRADE OF COBALT.
Nearby Deposits
Other deposits in the same region.
-
Gap Nickel Mine
- Cobalt commodity Site type Mine status
- Lancaster, Pennsylvania
- Underground
- 0.17 miles
-
John H. Bleacher Farm Prospect
- Nickel commodity Site type Prospect status
- Lancaster, Pennsylvania
- 3.00 miles
-
Lancaster County Gold Occurrence
- Copper commodity Site type Occurrence status
- Lancaster, Pennsylvania
- 5.62 miles
-
Landis Titanium Occurrence
- Titanium commodity Site type Occurrence status
- Chester, Pennsylvania
- 7.18 miles
-
Walter S. Schum Farm Prospect
- Manganese commodity Site type Prospect status
- Lancaster, Pennsylvania
- 10.00 miles
-
Worth And Company Iron Mines
- Iron commodity Site type Mine status
- Chester, Pennsylvania
- Residual
- 10.74 miles
-
Hilton Farm Property
- Iron commodity Site type Mine status
- Lancaster, Pennsylvania
- Surface
- 10.95 miles
-
Beartown Iron Mine
- Iron commodity Site type Mine status
- Lancaster, Pennsylvania
- Residual
- 11.29 miles
-
Caernarvon Township Mines
- Iron commodity Site type Mine status
- Lancaster, Pennsylvania
- Surface
- 13.14 miles
-
Browns Chromium Mine
- Chromium commodity Site type Mine status
- Lancaster, Pennsylvania
- Underground
- 13.65 miles
Nearby Places
- Gap (3.93 miles away)
- Paradise (4.40 miles away)
- Christiana (4.56 miles away)
- Strasburg (5.66 miles away)
- Intercourse (5.72 miles away)
- Atglen (5.81 miles away)
- Quarryville (5.92 miles away)
- Kirkwood (6.93 miles away)
- Bird-in-Hand (7.81 miles away)
- Refton (7.95 miles away)
- Homeville (8.34 miles away)
- Lampeter (8.61 miles away)
- Parkesburg (8.66 miles away)
- Cochranville (9.64 miles away)
- New Holland (10.04 miles away)
- Bareville (10.15 miles away)
- Sadsburyville (10.29 miles away)
- Willow Street (10.36 miles away)
- Leola (10.56 miles away)
- Russellville (10.88 miles away)
- Leacock (11.12 miles away)
- Blue Ball (11.37 miles away)
- Cambridge (11.57 miles away)
- Westwood (12.20 miles away)
Nearby Mining Districts
- Lancaster Area (0 miles away)
Footnotes
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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Notes
FROM 1853 TO 1893, GAP MINE WAS PRINCIPAL NICKEL-CO PRODUCER IN NORTH AMERICA. IN 1876, THE GAP NICKEL MINE'S OUTPUT OF 200, 000 LBS. OF NICKEL REPRESENTED ONE-SIXTH OF THE WORLD'S PRODUCTION.