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

Shawsville Area + 1 more nearby (Past Producer)Phoenix Dome Area-B + 1 more nearby (Past Producer)Phoenix Dome Area + 2 more nearby (Past Producer)Reed Mine (Past Producer)Reed Mine Et Al., Jarretsville-Dublin District + 2 more nearby (Past Producer)Ayres Mine (Past Producer)Rocks Quarry (Past Producer)Dinning Mine + 3 more nearby (Producer)Neikirk Mine (Past Producer)Deer Creek Mine/Cherry Hill Mine + 3 more nearby (Past Producer)Hanway Ore Bank (Past Producer)Joppa Ore Banks + 1 more nearby (Past Producer)Lomyer Ore Bank + 4 more nearby (Past Producer)Prospect Hill Ore Bank + 1 more nearby (Past Producer)Benser Ore Bank (Past Producer)Dublin Quarry + 2 more nearby (Past Producer)Welzenbach Ore Bank (Past Producer)Broad Creek Mine (Past Producer)Broad Creek Mine (Past Producer)Dublin Quarries (Past Producer)Sewell Ore Bank + 1 more nearby (Past Producer)H.Clay Whiteford and Company Quarry (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
22 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Broad Creek 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 4 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 39.675, -76.262. 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?

41
Past Producer

Produced ore or material at some point in the past.

1
Producer

Was producing when the record was made.

1
Prospect

Explored or test-dug, with no recorded production.

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

Magnetite 4Talc 2Limonite 2Apatite 1Ilmenite 1Rutile 1Chromite 1

Commodities

Iron 27Talc-Soapstone 5Titanium 3Metal 2Chromium 2Asbestos 2Feldspar 1

Sites (first 40)

SiteCommodityMinerals recordedStatusApprox. location
Dinning MineTitanium, Metal, IronApatite, Ilmenite, Magnetite, RutileProducer39.700, -76.383
Reed Mine Et Al., Jarretsville-Dublin DistrictChromiumChromitePast Producer39.611, -76.453
Phoenix Dome AreaIronLimonitePast Producer39.583, -76.511
Phoenix Dome Area-BIronLimonitePast Producer39.563, -76.523
Broad Creek MineIronMagnetitePast Producer39.675, -76.262
Deer Creek Mine/Cherry Hill MineIronMagnetitePast Producer39.644, -76.369
Shawsville AreaIronMagnetitePast Producer39.639, -76.550
Dublin QuarryTalc-SoapstoneTalcPast Producer39.653, -76.289
Harford Talc Co. QuarryTalc-SoapstoneTalcPast Producer39.651, -76.276
Dinning MineTitanium, Metal, Iron—Past Producer39.700, -76.383
Sewell Ore BankIron—Past Producer39.464, -76.261
Hanway Ore BankIron—Past Producer39.433, -76.356
H.Clay Whiteford and Company QuarryFeldspar—Past Producer39.692, -76.239
Joppa Ore BanksIron—Past Producer39.425, -76.355
Ayres Mine——Past Producer39.622, -76.415
Lomyer Ore BankIron—Past Producer39.440, -76.334
Scarff Ore BankIron—Past Producer39.583, -76.509
Dublin QuarriesTalc-Soapstone—Past Producer39.651, -76.267
Cherry Hill Mine——Past Producer39.639, -76.359
Shipley Ore BankIron—Past Producer39.441, -76.342
Welzenbach Ore BankIron—Past Producer39.439, -76.275
Tolley Ore BankIron—Past Producer39.561, -76.521
Flattermash Ore BankIron—Past Producer39.435, -76.333
Rocks QuarryTalc-Soapstone—Past Producer39.625, -76.408
Walsh Ore BankIron—Past Producer39.467, -76.250
Hope Ore BankIron—Past Producer39.586, -76.507
Broad Creek MineIron—Past Producer39.691, -76.263
Pine Grove Farm Ore BanksIron—Past Producer39.416, -76.357
Ayres Ore BankIron—Past Producer39.642, -76.550
Birdseye Mine——Past Producer39.612, -76.452
Benser Ore BankIron—Past Producer39.423, -76.330
Prospect Hill Ore BankIron—Past Producer39.424, -76.339
Cherry Hill Chrome Sand PlacerChromium—Past Producer39.641, -76.356
Neikirk MineAsbestos—Past Producer39.697, -76.382
Jenkins MineAsbestos—Past Producer39.699, -76.377
Dinning MineTitanium—Prospect39.700, -76.383
Skillman Ore BanksIron—Past Producer39.435, -76.352
Reed Mine——Past Producer39.612, -76.457
Wilkins Mine——Past Producer39.606, -76.452
Crow Ore BankIron—Past Producer39.414, -76.348

Nearby counties

Cecil County · Baltimore County · Baltimore city · Carroll County · Howard County

Maryland mineral guides

Back to all Maryland 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