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

Franklin Smelting & Refining + 1 more nearby (Producer)Barber's Quarry + 2 more nearby (Occurrence)
Past ProducerProducerProspectOccurrenceStatus unknown
2 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

Franklin Smelting & Refining

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 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 producer for Copper. Minerals mentioned: Copper. Approx. location 39.953, -75.164. 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?

2
Occurrence

The mineral was noted here, without development.

2
Producer

Was producing when the record was made.

1
Past Producer

Produced ore or material at some point in the past.

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

Molybdenite 1Scheelite 1

Commodities

Molybdenum 1Tungsten 1Copper 1Zirconium 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Barber's QuarryMolybdenumMolybdeniteOccurrence40.017, -75.083
Hoffman's QuarryTungstenScheeliteOccurrence40.017, -75.083
Franklin Smelting & RefiningCopper—Producer39.953, -75.164
Ap Green Refrac-Remmey Div-Phil, PaZirconium—Producer39.953, -75.164
Hoffmans Quarry——Past Producer40.017, -75.083

Fossil collections

The Paleobiology Database lists 1 fossil collection records in Philadelphia County. These are research records, not public dig sites.

Nearby counties

Delaware County · Montgomery County · Bucks County · Chester County · Lehigh County

Pennsylvania mineral guides

Back to all Pennsylvania 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