Flintville: Feldspar & Garnet Rockhounding in Harford County, Maryland
- Minerals reported
- 4
- Elevation
- 360 ft
- Best months
- March to November
Flintville is a mapped rockhounding spot in Harford County, Maryland. Reported finds include feldspar, garnet, mica, quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Permission required before collecting
- County
- Harford County
- State
- Maryland
- Nearest road
- Flintville Road
- Postcode
- 21160
- Coordinates
- 39.70486, -76.24853
Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.
Land & collecting status
Permission required before collecting
Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.
Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.
Best time to visit Flintville
Comfortable months (45 to 90°F highs)
Best months: March to November. Typical highs run 86°F in midsummer and 39°F in midwinter, with winter lows near 24°F.
Climate normals: NOAA 1991-2020 monthlies, CONOWINGO DAM station (5 mi away), adjusted for elevation.
Geology at Flintville
This spot sits on Wissahickon Formation; Metagraywacke, mapped as metagraywacke and muscovite schist that formed roughly 2500 to 540 million years ago. Metamorphic terrain like this typically carries quartz veins and sweats, and weathered crystals tend to end up in the soils and streams below.
- Mapped unit
- Wissahickon Formation; Metagraywacke
- Age
- 2500–540 Ma (Proterozoic)
- Rock types
- metagraywacke and muscovite schist
- Elevation
- 360 ft
Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.
Today's weather
Is today a good day to go?
The app shows live weather, recent rain, and a daily rockhounding score for Flintville.
Get the appSources & verification
Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.
- Maryland Geological Survey
- Maryland DNR state park rules
- Calvert Marine Museum fossil guidance
- Community submissions reviewed against published agency rules
Found at Flintville
Each name opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.
Nearby rockhounding spots
Other rockhounding spots within driving distance of Flintville.
- Flintville (moss agate area)Harford County, Maryland · 1 mi awayMoss Agate, Jasper
- CastletonHarford County, Maryland · 2 mi awayQuartz, Tourmaline
- Rock SpringsCecil County, Maryland · 4 mi awayKammererite, Serpentine, Soapstone
- CardiffHarford County, Maryland · 5 mi awayGarnet, Pyrite, Serpentine
- Funks Pond Recreational AreaCecil County, Maryland · 5 mi awayKammererite, Serpentine, Soapstone
- Chrome HillHarford County, Maryland · 10 mi awaySmoky Quartz, Actinolite, Bronzite
- Reed Mine & Walkens MineHarford County, Maryland · 13 mi awayChromite, Brucite, Quartz
- BaltimoreBaltimore County, Maryland · 22 mi awaySilicified Cycad Wood
Across the state line from Flintville
Flintville is close enough to the Maryland border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.
- Cecil CountyLancaster County, Pennsylvania · 6 mi awayKammererite, Serpentine, Soapstone
- Rock Springs RunLancaster County, Pennsylvania · 6 mi awayMoss Agate
- WrightsdaleChester County, Pennsylvania · 6 mi awayBrucite, Chromite, Magnesite
- Nottingham ParkChester County, Pennsylvania · 11 mi awaySerpentine, Garnet, Feldspar
- AvondaleChester County, Pennsylvania · 27 mi awayQuartz, Smoky Quartz, Rutile
- Grubb Lake and Mud LakeLancaster County, Pennsylvania · 27 mi awayGeode, Limonite
Flintville FAQ
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More rockhounding in Maryland
See all 43 Maryland spots →
Open Flintville on the map
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