Edison Lithium Mine
Keystone, South Dakota
The Edison Lithium Mine is near Keystone, South Dakota. Historically the site has been associated with the Keystone Mining District which is now part of the Black Hills National Forest. The Edison Lithium Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. The ore mined is composed of feldspar, muscovite and spodumene with waste material consisting primarily of pyrite, calcite and quartz. The ore body is irregularly shaped of unknown dimensions. Associated rock in this area is pegmatite from the Neoproterozoic era 1.00 to 0.54 billion years ago. The Black Hills of the Interior Plains characterize the geomorphology of the surrounding area.
Additional textual information about a site or mine.
ADJACENT PARTS OF SECTION 16
Formal or informal mining district names.
SURFACE & UNDERGROUND MINING. 12 DIAMOND DRILL HOLES ON THE EDISON, 1 ON THE BULL CON. 2, 114. 5 FEET OF TEST HOLES.
Characteristics of the ore body.
Geological materials at the site.
Tectonic setting in which the site or deposit is situated.
Physiographic area where the resource is found.
Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.
Other deposits in the same region.
Edison Niobium (Columbium) Mine
King Mica Mine
White Cap Mine
Big Hit Group
Big Hit Mine
Champion Feldspar Mine
King Lithia Prospect
* 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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4 OR MORE COALESING PEGMATITES HAVING 2 ZONES. SPODUMENE CRYSTALS UP TO 8 FEET LONG. BULL CON DIKE IS 450 FEET NORTH OF THE EDISON.