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

Shenango Inc Coke & Iron/ Pgh, Pa (Producer)Ritchey Metals Co/ Bethel Park, Pa (Past Producer)Jones & Laughlin Steel--Pgh., Pa. (Producer)Us Steel Homestead Works (Producer)Bettis Atomic Power Lab/W. Mifflin (Unknown)Us Steel Carrie Furnaces-Rankin, Pa (Past Producer)Teledyne,McKeesport Plant (Past Producer)Uss Edgar Thompson Div/Braddock Pa (Producer)Uss Edgar Thompson Div/W. Mifflin (Past Producer)Cametco Briquetting Plt-Duquesne Pa (Past Producer)Us Steel Duquesne Plant (Producer)Universal Plant (Producer)Ap Green Refractories--Tarentum Pa. + 1 more nearby (Producer)Unnamed Sandstone Quarry (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
14 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

Cametco Briquetting Plt-Duquesne Pa

We picked it because its USGS record mentions 1 gem or collectible mineral (Fluorite) and 1 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as past producer for Fluorine-Fluorite. Minerals mentioned: Fluorite. Approx. location 40.372, -79.848. 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?

7
Producer

Was producing when the record was made.

7
Past Producer

Produced ore or material at some point in the past.

1
Unknown

Status not recorded.

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

No individual minerals are listed in these records.

Commodities

Iron 8Marble 1Dimension 1Zinc 1Flagstone 1Magnesite 1Tungsten 1Thorium 1Fluorine-Fluorite 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Universal PlantMarble, Dimension—Producer40.454, -79.817
Us Steel Carrie Furnaces-Rankin, PaIron—Past Producer40.413, -79.889
Jones & Laughlin Steel--Pgh., Pa.Iron—Producer40.426, -79.962
Shenango Inc Coke & Iron/ Pgh, PaIron—Producer40.499, -80.080
Us Steel Homestead WorksIron—Producer40.411, -79.900
Ritchey Metals Co/ Bethel Park, PaZinc—Past Producer40.437, -80.008
Unnamed Sandstone QuarryFlagstone—Past Producer40.434, -79.730
Us Steel Duquesne PlantIron—Producer40.369, -79.840
Ap Green Refractories--Tarentum Pa.Magnesite—Producer40.602, -79.756
Teledyne,McKeesport PlantTungsten—Past Producer40.350, -79.870
Bettis Atomic Power Lab/W. MifflinThorium—Unknown40.359, -79.899
Cametco Briquetting Plt-Duquesne PaFluorine-Fluorite—Past Producer40.372, -79.848
Allegheny Ludlum PlantIron—Past Producer40.603, -79.754
Uss Edgar Thompson Div/W. MifflinIron—Past Producer40.378, -79.846
Uss Edgar Thompson Div/Braddock PaIron—Producer40.394, -79.855

Fossil collections

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

Nearby counties

Westmoreland County · Armstrong County · Washington County · Beaver County · Butler 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