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

Worth Brothers Quarry (Past Producer)Bald Friar Quarry + 1 more nearby (Past Producer)Stubbs Sand-Chrome Property + 2 more nearby (Prospect)Conowingo Marble and Mineral Quarry + 1 more nearby (Past Producer)Caldwell Quarry Original + 1 more nearby (Past Producer)Line Pit Lowe's Mine (Past Producer)Southwest Rock Springs Pits (Past Producer)Riley Sand Chrome Property + 2 more nearby (Prospect)Dawson Quarry + 1 more nearby (Past Producer)Taylor Quarry (Past Producer)Cedar Run (Prospect)Port Deposit Quarry + 1 more nearby (Past Producer)Reynolds Farm Placer (Past Producer)Stevenson Farm Placer + 2 more nearby (Past Producer)Lincoln Farm Placer + 1 more nearby (Past Producer)Browns Farm Placer (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
16 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 2 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

Bald Friar Quarry

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 11 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 Feldspar. Minerals mentioned: Feldspar. Approx. location 39.702, -76.207. 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.

5
Prospect

Explored or test-dug, with no recorded production.

1
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

Chromite 3Granite 1

Commodities

Feldspar 9Chromium 7Granite 2

Sites

SiteCommodityMinerals recordedStatusApprox. location
Wood MineChromiumChromitePast Producer39.724, -76.108
Line Pit Lowe's MineChromiumChromitePast Producer39.720, -76.175
Stevenson Farm PlacerChromiumChromitePast Producer39.717, -76.050
Port Deposit QuarryGraniteGranitePast Producer39.586, -76.098
Dawson QuarryFeldspar—Past Producer39.713, -76.153
Taylor QuarryFeldspar—Past Producer39.718, -76.128
Line Pit Mine——Past Producer39.722, -76.173
Lincoln Farm Placer——Past Producer39.712, -76.058
Bald Friar QuarryFeldspar—Past Producer39.702, -76.207
Reynolds Farm Placer——Past Producer39.708, -76.068
Conowingo Marble and Mineral QuarryFeldspar—Past Producer39.709, -76.187
Riley Sand Chrome PropertyChromium—Prospect39.718, -76.153
Worth Brothers QuarryFeldspar—Past Producer39.704, -76.194
Marshall Sand Chrome PropertyChromium—Past Producer39.719, -76.153
John R. Harris ProspectChromium—Prospect39.713, -76.052
Port Deposit QuarryGranite—Past Producer39.586, -76.098
Stubbs Sand-Chrome Property——Prospect39.718, -76.190
Stevenson Farm Placer——Past Producer39.718, -76.049
Bald Friar Quarry #2Feldspar—Past Producer39.696, -76.204
Caldwell Quarry OriginalFeldspar—Past Producer39.700, -76.191
Browns Farm Placer——Past Producer39.717, -75.974
Tweed Property——Past Producer39.722, -76.055
West Placer AreaChromium—Prospect39.719, -76.177
Preston Farm Pits——Past Producer39.719, -76.183
Mcvey QuarryFeldspar—Past Producer39.714, -76.151
Weiant Property——Past Producer39.709, -76.189
Southwest Rock Springs Pits——Past Producer39.711, -76.166
Schofield Sand Chrome Deposit——Occurrence39.716, -76.151
Cedar Run——Prospect39.715, -76.140
Caldwell QuarriesFeldspar—Past Producer39.701, -76.186

Fossil collections

The Paleobiology Database lists 5 fossil collection records in Cecil County. These are research records, not public dig sites.

Nearby counties

Harford 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