Dakota Calumet Group

Keystone, South Dakota

43.9521°N 103.4458°W

Mine Overview

The Dakota Calumet Group is near Keystone, South Dakota. Historically the site has been associated with the Hill City Mining District which is now part of the Black Hills National Forest. The site was first discovered in 1875 by Newton-Jenny Survey. Production output of the Dakota Calumet Group was considered to be small size. Mine operations consist of surface and underground workings. There is one known shaft. Subsurface depth reaches a maximum of 259 meters (850 feet) and extends 357 meters (1,170 feet) in length. The ore mined is composed of chalcopyrite with waste material consisting primarily of pyrrhotite and pyrite. The ore body extends 60 meters (200 feet) in width. The host rock in this area is quartzite from the Paleoproterozoic era 2.50 to 1.60 billion years ago. The Black Hills of the Interior Plains characterize the geomorphology of the surrounding area.

Site identification and general characteristics. Learn about USGS mines.

Copper Primary Commodity
Site Record Type^?
Mine Development Status^?
1875 Year Discovered^?
Newton Jenny Survey Discovered By^?
Small Production Size^?
Metallic Site Commodity Type^?
Small Mine Size^?

Mine Names

Name^? Status^?
Dakota Calumet Group Current
Lillian Group Previous
Continental Copper Company Property Previous
Black Hills Copper Company Property Previous

Owner Name and Address

Fred Long

Rogers Lake, New York

Type: Owner

Commodities

Additional textual information about a site or mine.

Commodity Type Importance
Copper Metallic Primary

Deposit

12 PATENTED CLAIMS

Location Info

Pennington , South Dakota County / State

Continent Country State County
North America The United States South Dakota Pennington

Notes

ADJACENT TO THE BLUE LEAD MINE

Meridian / Township / Range Description

Meridian^? Township^? Section^? Aliquot^?
Black Hills Meridian T.1S R.6E Sec. 19 NE

Land Status

Land status information.

Land Status^? Admin Area^?
National Forest Black Hills National Forest

Mining Districts

Formal or informal mining district names.

District
Hill City Mining District

Development

A 150 TON MATTE SMELTER OPERATED INTERMITTENTLY FROM 1907 TO 1910.

Workings

Workings at the site.

Workings #1

Type: Surface and Underground
Surface Area: 0.005 Hectares
Surface Length: 18.29 Meters
Surface Width: 3.05 Meters
Sub Surface Length: 356.62 Meters
Sub Surface Depth: 259.08 Meters

Workings

A FEW SMALL OPEN CUTS, ONE LARGER EXCAVATION AND ONE SHAFT WITH DRIFTING CUTTING MINERALIZED ZONE AT 300 FEET

Materials

Minerals or other materials present in the mine.

Role^? Material^?
Gangue/Waste Pyrite
Gangue/Waste Pyrrhotite
Ore Chalcopyrite

Orebody

Characteristics of the ore body.

Width: 60.96 meters (200.00 feet)
Strike: north 25 west
Dip: 70 northeast

Rocks

Geological materials at the site.

Class^? 1st Order Name^? 2nd Order Name^? 3rd Order Name^? 4th Order Name^? Most Specific Name^? Begin Time End Time Description^?
Host Rock Metamorphic Rock Metasedimentary Rock Quartzite - Quartzite Paleoproterozoic Paleoproterozoic -
Mineralization - - - - - Neoproterozoic Neoproterozoic -

Tectonic

Tectonic setting in which the site or deposit is situated.

Setting^?
Southern Black Hills

Physiography

Physiographic area where the resource is found.

Division Province^? Section
Interior Plains Great Plains Province Black Hills

Ore Control

Controls on emplacement of ore such as faults or other structural features.

Text^?
Shear Zone

Nearby Deposits

Other deposits in the same region.

Nearby Places

Keystone (4.14 miles away)
Rockerville (4.36 miles away)
Hill City (6.57 miles away)
Colonial Pine Hills (7.53 miles away)
Johnson Siding (9.16 miles away)
Silver City (10.85 miles away)
Rapid City (13.87 miles away)
Hermosa (14.87 miles away)
Custer (14.91 miles away)
Blackhawk (15.35 miles away)
Rapid Valley (16.72 miles away)
Nemo (16.97 miles away)
Summerset (17.19 miles away)
Green Valley (17.59 miles away)
Rochford (18.07 miles away)
Piedmont (19.51 miles away)
Fairburn (21.77 miles away)
Tilford (24.06 miles away)

Nearby Mining Districts

Hill City Mining District (0 miles away)
Keystone Mining District (1.52 miles away)
Spring Creek Area (1.79 miles away)
Pactola Mining District (6.16 miles away)
Spokane Mining District (6.78 miles away)

Nearby Lands

Black Hills National Forest (0 miles away)
Mount Rushmore National Memorial (4.20 miles away)
Black Elk Wilderness (4.67 miles away)

Footnotes

* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.

** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.

¹ World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.

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