Rockhounding in Grant County, SD: 15 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

7 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?

Producer

Was producing when the record was made.

Past Producer

Produced ore or material at some point in the past.

Status terms come from USGS MRDS records.

Minerals recorded here

No individual minerals are listed in these records.

Commodities

Granite 15

Sites

Site	Commodity	Minerals recorded	Status	Approx. location
Steiner Rausch Granite Pit	Granite	—	Producer	45.217, -96.617
Columbia Granite Quarry	Granite	—	Producer	45.211, -96.484
Dakota Granite Co South Quarry	Granite	—	Past Producer	45.193, -96.513
North Star Granite Quarry	Granite	—	Producer	45.207, -96.486
B F Coggins Granite Co Pit	Granite	—	Past Producer	45.217, -96.634
Dakota Granite Co Quarry North	Granite	—	Producer	45.201, -96.521
Cold Spring Granite Co Quarry	Granite	—	Producer	45.196, -96.524
Delano Granite Quarry	Granite	—	Past Producer	45.207, -96.518
American Rose Quarry	Granite	—	Producer	45.217, -96.617
Hunter Granite Quarry	Granite	—	Producer	45.207, -96.518
Mahogany Quarry	Granite	—	Producer	45.217, -96.617
Carnelian No 1 Quarry	Granite	—	Producer	45.205, -96.524
D G Kaddez and Co Quarry	Granite	—	Past Producer	45.205, -96.484
Melrose Granite Quarry	Granite	—	Producer	45.204, -96.489
Sequoya Quarry	Granite	—	Producer	45.204, -96.488

Fossil collections

The Paleobiology Database lists 4 fossil collection records in Grant County. These are research records, not public dig sites.

Nearby counties

Buffalo County · Lyman County · Jackson County · Perkins County · Shannon County

South Dakota mineral guides

Back to all South Dakota 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 Grant County, South Dakota