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

Southwest Koontz Deposit (Past Producer)Lonaconing Deposit (Past Producer)East Lonaconing Deposit (Past Producer)Johnson Field Deposit/Frost Co. Tract/Midlothian Field Deposits + 1 more nearby (Past Producer)Midlothian Field Deposit (Past Producer)Deposit East of Lonaconing/Lonaconing Deposit (Past Producer)Frost Company Deposit (Past Producer)Miller Deposit (Past Producer)Lower Tunnel Deposit (Past Producer)Dutch Hollow/Ridgeley Deposits + 1 more nearby (Past Producer)Pompey Smash Deposit/Miller Deposit + 1 more nearby (Past Producer)Ridgeley Deposit (Past Producer)Upper & Lower Tunnel Deposit (Past Producer)West Cumberland Deposit + 1 more nearby (Past Producer)Gephart Deposit (Past Producer)Long Deposit (Past Producer)Deposit N. of Cumberland + 1 more nearby (Past Producer)Deposit W. of Cumberland/Gephart/Narrows Park/Long Deposits (Past Producer)Valentine Ore Bank (Past Producer)Valentime Ore Bank (Past Producer)No Name/Knight Farm Ore Bank + 1 more nearby (Past Producer)Knight Farm Ore Bank (Past Producer)Neff Deposit (Past Producer)Guepl Deposit (Prospect)
Past ProducerProducerProspectOccurrenceStatus unknown
24 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.

Field cards: what kind of sites?

29
Past Producer

Produced ore or material at some point in the past.

1
Prospect

Explored or test-dug, with no recorded production.

Status terms come from USGS MRDS records.

Minerals recorded here

Limonite 6Siderite 3Hematite 2

Commodities

Iron 30

Sites

SiteCommodityMinerals recordedStatusApprox. location
Deposit W. of Cumberland/Gephart/Narrows Park/Long DepositsIronHematitePast Producer39.656, -78.780
Deposit N. of CumberlandIronHematitePast Producer39.682, -78.762
No Name/Knight Farm Ore BankIronLimonitePast Producer39.651, -78.707
Valentime Ore BankIronLimonitePast Producer39.691, -78.729
Pompey Smash Deposit/Miller DepositIronLimonitePast Producer39.614, -78.908
Deposit East of Lonaconing/Lonaconing DepositIronLimonitePast Producer39.574, -78.966
Johnson Field Deposit/Frost Co. Tract/Midlothian Field DepositsIronLimonite, SideritePast Producer39.654, -78.952
Dutch Hollow/Ridgeley DepositsIronLimonite, SideritePast Producer39.706, -78.915
Upper & Lower Tunnel DepositIronSideritePast Producer39.713, -78.817
Christie Road Ore DepositIron—Past Producer39.656, -78.708
Lower Tunnel DepositIron—Past Producer39.713, -78.912
Lonaconing DepositIron—Past Producer39.569, -78.979
North Cumberland DepositIron—Past Producer39.678, -78.771
West Cumberland DepositIron—Past Producer39.656, -78.786
Neff DepositIron—Past Producer39.715, -78.700
Frost Company DepositIron—Past Producer39.658, -78.941
East Lonaconing DepositIron—Past Producer39.565, -78.984
Miller DepositIron—Past Producer39.596, -78.935
Guepl DepositIron—Prospect39.585, -78.681
Ridgeley DepositIron—Past Producer39.695, -78.887
Johnson Field DepositIron—Past Producer39.655, -78.953
Long DepositIron—Past Producer39.626, -78.810
Dutch Hollow DepositIron—Past Producer39.700, -78.913
Southwest Koontz DepositIron—Past Producer39.556, -79.018
Valentine Ore BankIron—Past Producer39.682, -78.734
Pompey Smash DepositIron—Past Producer39.615, -78.908
Narrows Park DepositIron—Past Producer39.667, -78.792
Gephart DepositIron—Past Producer39.639, -78.791
Midlothian Field DepositIron—Past Producer39.638, -78.965
Knight Farm Ore BankIron—Past Producer39.633, -78.729

Fossil collections

The Paleobiology Database lists 21 fossil collection records in Allegany County. These are research records, not public dig sites.

Nearby counties

Garrett County · Washington County · Frederick County · Montgomery County · Carroll County

Maryland mineral guides

Back to all Maryland 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