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

Willis Hankins Bluestone (Past Producer)Thompkins Bluestone Quarry. (Past Producer)M.Hazlett No.1 Well (Prospect)East Branch Quarry (Producer)Downsville Quarry and Mill (Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
5 paw pins, one per site. Hover or tap a pin for the site name. 1 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Field cards: what kind of sites?

3
Producer

Was producing when the record was made.

2
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

No individual minerals are listed in these records.

Commodities

Flagstone 5Salt 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
M.Hazlett No.1 WellSalt—Prospect42.342, -75.081
Willis Hankins BluestoneFlagstone—Past Producer42.066, -75.314
Reynolds QuarryFlagstone—Producer42.781, -77.869
East Branch QuarryFlagstone—Producer42.009, -75.021
Downsville Quarry and MillFlagstone—Producer42.085, -74.993
Thompkins Bluestone Quarry.Flagstone—Past Producer41.976, -75.213

Fossil collections

The Paleobiology Database lists 44 fossil collection records in Delaware County. These are research records, not public dig sites.

Nearby counties

Chenango County · Broome County · Ulster County · Sullivan County · Tioga County

New York mineral guides

Back to all New York 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 USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date.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