RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Wolf Hill + 1 more nearby (Past Producer)Bingham Prospect (Prospect)Virgin Copper Mine (Prospect)Eagle Prospect + 1 more nearby (Prospect)Bigham Prospect (Prospect)Snively Prospect + 1 more nearby (Prospect)Russell Prospect (Prospect)Reed Hill Prospect (Prospect)Cole's Ore Bank Prospect (Occurrence)Snively Musselman/Russel Mines (Past Producer)Virginia Mills Hematite Occurence (Occurrence)Unnamed Copper Prospect + 1 more nearby (Prospect)Cashtown Hematite Occurence (Occurrence)Orrtanna Prospect (Occurrence)Adams Minter Mine/Peter Comfort Mine (Past Producer)Mells Mine (Occurrence)Unnamed Copper Prospect (Prospect)Adam Minter Mine + 1 more nearby (Past Producer)Kerr Hill Prospect (Occurrence)Center Mills Prospect (Occurrence)Widow Bruchs Bank + 1 more nearby (Past Producer)Near Gargol + 1 more nearby (Prospect)Unnamed Copper Prospect (Prospect)Unnamed Copper Prospect (Prospect)Herbert Mummurt Farm Deposit (Occurrence)Widow Clark Bank + 1 more nearby (Past Producer)Enoch Lefevre Bank & 2 Additional + 1 more nearby (Past Producer)Enoch Lefevre Bank (Past Producer)Unnamed Dolomite Pit (Past Producer)David Boyer Bank (Past Producer)Lefevre Pits (Past Producer)Mcconaughys Ore Bank + 1 more nearby (Past Producer)Solomon Schwartz Bank & Numerous Other + 2 more nearby (Past Producer)Krumrein Pits (Past Producer)McConaughy's Ore Bank (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
35 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 1 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Adams Minter Mine/Peter Comfort Mine

We picked it because its USGS record mentions 1 of the minerals on our cards and 1 of our card minerals overall. That ties with 15 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as past producer for Iron. Minerals mentioned: Magnetite. Approx. location 39.889, -77.334. USGS record.

Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.

Field cards: what kind of sites?

24
Past Producer

Produced ore or material at some point in the past.

15
Prospect

Explored or test-dug, with no recorded production.

9
Occurrence

The mineral was noted here, without development.

Status terms come from USGS MRDS records.

Mineral cards

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

Limonite 4Magnetite 1

Commodities

Copper 14Iron 12Dolomite 4

Sites (first 40)

SiteCommodityMinerals recordedStatusApprox. location
McConaughy's Ore BankIronLimonitePast Producer39.863, -77.001
Solomon Schwartz Bank & Numerous OtherIronLimonitePast Producer39.773, -77.014
Wolf HillIronLimonitePast Producer39.947, -77.450
Enoch Lefevre Bank & 2 AdditionalIronLimonitePast Producer39.753, -77.054
Adams Minter Mine/Peter Comfort MineIronMagnetitePast Producer39.889, -77.334
Snively Musselman/Russel MinesCopper—Past Producer39.813, -77.422
Mells Mine——Occurrence39.807, -77.348
Samuel Schwartz Bank——Past Producer39.775, -77.007
Unnamed Copper ProspectCopper—Prospect39.753, -77.395
Snively ProspectCopper—Prospect39.806, -77.428
Unnamed Copper ProspectCopper—Prospect39.889, -77.159
Eagle ProspectCopper—Prospect39.741, -77.454
Adam Minter Mine——Past Producer39.886, -77.329
Kerr Hill Prospect——Occurrence39.821, -77.319
Russell ProspectCopper—Prospect39.790, -77.435
Culp Hill ProspectCopper—Prospect39.796, -77.433
Unnamed Copper ProspectCopper—Prospect39.920, -77.169
Bigham ProspectCopper—Prospect39.826, -77.428
Virginia Mills Hematite OccurenceIron—Occurrence39.806, -77.395
Cole's Ore Bank ProspectIron—Occurrence39.918, -77.417
Krumrein PitsIron—Past Producer39.748, -77.013
Center Mills Prospect——Occurrence39.955, -77.212
Unnamed Copper ProspectCopper—Prospect39.762, -77.392
Mcconaughys Ore Bank——Past Producer39.852, -77.009
Early and Killinger Mine——Past Producer39.754, -77.045
Near Gargol——Prospect40.031, -77.172
Herbert Mummurt Farm DepositIron—Occurrence39.741, -77.112
Lefevre PitsIron—Past Producer39.744, -77.021
Bingham ProspectCopper—Prospect39.766, -77.448
Headlight ProspectCopper—Prospect39.749, -77.459
Orrtanna Prospect——Occurrence39.847, -77.359
Gargol Magnetite OccurenceIron—Occurrence40.026, -77.167
Widow Bruchs Bank——Past Producer40.001, -77.187
Krug Farm Dolomite PitDolomite—Past Producer39.854, -77.016
Wolf Hill——Past Producer39.949, -77.449
Big Dam Dolomite QuarryDolomite—Past Producer40.314, -75.889
David Boyer Bank——Past Producer39.764, -77.034
Widow Clark Bank——Past Producer39.753, -77.058
Bair Farm Dolomite PitDolomite—Past Producer39.753, -77.064
Peter Comfort Mine——Past Producer39.886, -77.325

Fossil collections

The Paleobiology Database lists 2 fossil collection records in Adams County. These are research records, not public dig sites.

Nearby counties

Franklin County · Cumberland County · York County · Fulton County · Dauphin County

Pennsylvania mineral guides

Back to all Pennsylvania counties.

Related articles

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated