Rockhounding in Huntingdon County, PA: 48 USGS Mineral Sites (2026)

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

Past ProducerProducerProspectOccurrenceStatus unknown

34 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 3 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

Mount Union Quarry & Mill

We picked it because its USGS record mentions 1 gem or collectible mineral (Quartz) and 1 of our card minerals overall. That ties with 1 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 Quartz. Minerals mentioned: Quartz. Approx. location 40.381, -77.875. 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?

Past Producer

Produced ore or material at some point in the past.

Occurrence

The mineral was noted here, without development.

Prospect

Explored or test-dug, with no recorded production.

Status terms come from USGS MRDS records.

Mineral cards

Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
2 sites

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

Minerals recorded here

Hematite 13Limonite 13Quartz 1

Commodities

Iron 35Zinc 4Manganese 3Lead 3Quartz 1

Sites (first 40)

Site	Commodity	Minerals recorded	Status	Approx. location
Herod's Run Mine	Iron	Hematite	Past Producer	40.629, -77.866
Greenwood Furance Mines	Iron	Hematite	Past Producer	40.653, -77.764
Unnamed-Barre Furance/Mcclure	Iron	Hematite	Past Producer	40.597, -78.090
Grubb Mine	Iron	Hematite	Past Producer	40.451, -78.115
Patterson Tract	Iron	Hematite	Past Producer	40.417, -78.155
Shults & Kittie Houp Banks	Iron	Hematite	Past Producer	40.351, -78.205
R.H. Powell Mine	Iron	Hematite	Past Producer	40.333, -78.230
Powell Bank	Iron	Hematite	Past Producer	40.285, -78.257
Martin Ore Bank	Iron	Hematite	Past Producer	40.308, -77.933
Mines In Marklesburg Area	Iron	Hematite	Past Producer	40.394, -78.175
N. Rudy Mine	Iron	Hematite	Past Producer	40.663, -77.869
Orbisonia Area--4 Openings	Iron	Hematite	Past Producer	40.235, -77.882
Laurel Run Mines	Iron	Hematite	Past Producer	40.651, -77.841
Huntingdon Furance Banks & 3 Additional	Iron	Limonite	Past Producer	40.668, -78.125
Pennington Ore Bank & 3 Additional	Iron	Limonite	Past Producer	40.697, -78.146
Bean Bank/Rumbaryer & Hannah Furance	Iron	Limonite	Past Producer	40.704, -78.095
Hostler Bank & 2 Additional	Iron	Limonite	Past Producer	40.704, -78.027
Little Dry Hollow	Iron	Limonite	Past Producer	40.728, -78.075
Stewart Ore Bank	Iron	Limonite	Past Producer	40.249, -77.947
Martin Mine	Iron	Limonite	Past Producer	40.553, -78.051
Unnamed--Oribisonia Area	Iron	Limonite	Past Producer	40.218, -77.900
Dorsey Bank	Iron	Limonite	Past Producer	40.658, -78.151
Royer & Dewees Tunnel	Iron	Limonite	Past Producer	40.260, -77.879
Bell Ore Bank	Iron	Limonite	Past Producer	40.187, -77.904
Lane Ore Bank	Iron	Limonite	Past Producer	40.296, -77.921
Paradise Furance Mines	Iron	Limonite	Past Producer	40.320, -78.135
Mount Union Quarry & Mill	Quartz	Quartz	Past Producer	40.381, -77.875
Keystone Zn Mine	Zinc	—	Past Producer	40.647, -78.211
U. S. Rt. 22 Roadcut Prospect	—	—	Prospect	40.396, -77.931
Zeller's Zinc Occurrence No. 15	Zinc	—	Occurrence	40.655, -78.205
Silver Mine Knob Pit	Iron	—	Past Producer	40.333, -77.961
Dry Hollow Prospects	Iron	—	Occurrence	40.692, -78.100
Critchfield Co Property Prospect	Manganese	—	Prospect	40.656, -78.152
Trench 4133	Lead	—	Prospect	40.399, -77.927
Motel 22 Drill Hole	Zinc	—	Prospect	40.396, -77.930
Cale Hollow Prospects	Iron	—	Occurrence	40.705, -78.038
R. Hammon Mine	Iron	—	Past Producer	40.335, -77.958
Conrail Outcrop Occurrence	Lead	—	Occurrence	40.393, -77.929
Frank White Manganese Deposit	Manganese	—	Occurrence	40.258, -77.920
Unnamed Manganese Mine	Manganese	—	Past Producer	40.258, -77.919

Fossil collections

The Paleobiology Database lists 6 fossil collection records in Huntingdon County. These are research records, not public dig sites.

Nearby counties

Blair County · Mifflin County · Bedford County · Fulton County · Crawford County

Pennsylvania mineral guides

Back to all Pennsylvania counties.

Is It Legal to Collect Rocks on Public Land? BLM, Forest Service and National Park Rules

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 October 2026

Rockhounding in Huntingdon County, Pennsylvania