Rockhounding in Loudoun County, Virginia

1 mapped rockhounding spot in Loudoun County. Most commonly produces calcite, datolite, diopside, epidote.

Loudoun County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Representative specimen of botryoidal prehnite, a zeolite-suite mineral found in Loudoun County diabase — Loudon CountyLoudoun County, Virginia

Minerals reported in Loudoun County

Standout in Loudoun County

Hand-picked spot in Loudoun County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Loudon County
Public
Loudoun County
The Triassic diabase and basalt of the Culpeper Basin in Loudoun County host a classic Virginia zeolite suite, with prehnite, stilbite, natrolite, and datolite lining vugs and fractures. Mindat and Virginia geologic-survey records document the zeolite occurrences in the diabase, giving northern Virginia collectors a distinctive trap-rock mineral association.
Calcite, Datolite, Epidote, Natrolite

Spots in Loudoun County

Spot	Minerals	Coordinates	Access
Loudon CountyCochran Mill Road	Calcite Datolite Epidote Natrolite Stilbite Diopside Magnetite Prehnite +1 more	39.0819, -77.5219	Public

Neighboring counties in Virginia

Adjacent rockhounding counties, ranked by how close their centroids sit to Loudoun County. A natural extension if Loudoun County is already on your trip plan.

Across the state line from Loudoun County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into Virginia.

Loudoun County FAQ

Where can I rockhound in Loudoun County, Virginia?+

RockHoundR tracks 1 rockhounding spot in Loudoun County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Loudoun County?+

Spots in Loudoun County most often produce Calcite, Datolite, Diopside, Epidote, Magnetite. Individual spots can vary widely.

Are these Loudoun County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a Loudoun County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.