Evergreen Group
Custer, South Dakota
43.7307°N 103.5894°W
Mine Overview
The Evergreen Group is near Custer, South Dakota. Historically the site has been associated with the Custer Mining District which is now part of the Black Hills National Forest. The Evergreen Group 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 beryl, microcline and feldspar with waste material consisting primarily of quartz. The ore is found in dikes of unknown dimensions. The host rock in this area is pegmatite. The Black Hills of the Interior Plains characterize the geomorphology of the surrounding area.
Site identification and general characteristics. Learn about USGS mines.
Owner Name and Address
Ben Dilley
Custer, South Dakota- Type
- Owner
Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Beryllium Metallic Primary
- Feldspar Non-Metallic Primary
Workings
TWO OF THE CLAIMS HAVE BEEN EXPLORED WITH OPEN CUTS.
Orebody
Characteristics of the ore body.
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?
- Associated Rock Plutonic Rock Pegmatite - - Pegmatite Neoproterozoic Neoproterozoic -
- Host Rock Plutonic Rock Pegmatite - - Pegmatite - - -
- Mineralization - - - - - Neoproterozoic Neoproterozoic -
Physiography
Physiographic area where the resource is found.
- Division Province? Section
- Interior Plains Great Plains Province Black Hills
Nearby Deposits
Other deposits in the same region.
-
Evergreen Group
- Feldspar commodity Site type Mine status
- Custer, South Dakota
- Surface
- 0.08 miles
-
Beecher Lithium Mine
- Lithium commodity Site type Mine status
- Custer, South Dakota
- 1.75 miles
-
Long View Mine
- Lithium commodity Site type Mine status
- Custer, South Dakota
- Surface And Underground
- 1.75 miles
-
Lofton Beryllium Mine
- Beryllium commodity Site type Mine status
- Custer, South Dakota
- Surface
- 1.96 miles
-
Dyke Feldspar Mine
- Feldspar commodity Site type Prospect status
- Custer, South Dakota
- Surface
- 2.01 miles
-
Chipmunk Claim
- Feldspar commodity Site type Mine status
- Custer, South Dakota
- Surface
- 2.01 miles
-
Black Diamond Mine
- Lithium commodity Site type Occurrence status
- Custer, South Dakota
- 2.02 miles
-
Custer Mountain Mine
- Niobium (Columbium) commodity Site type Mine status
- Custer, South Dakota
- Surface And Underground
- 2.08 miles
-
Snookum Feldspar Mine
- Feldspar commodity Site type Mine status
- Custer, South Dakota
- Surface
- 2.15 miles
-
Chipmunk Claim
- Beryllium commodity Site type Mine status
- Custer, South Dakota
- 2.16 miles
Nearby Places
- Custer (2.52 miles away)
- Pringle (8.44 miles away)
- Hill City (13.95 miles away)
- Keystone (14.22 miles away)
- Rockerville (19.46 miles away)
- Hot Springs (21.45 miles away)
- Silver City (24.46 miles away)
Nearby Mining Districts
- Custer Mining District (0 miles away)
- Pringle Mining District (4.94 miles away)
Nearby Lands
- Black Hills National Forest (0 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.
Mining Claim News From The Diggings™
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Understanding Claim Ownership
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Understanding BLM Administrative Areas
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Understanding Location Data
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Understanding Townships
A “township” can refer to two different things. Both are part of the PLSS measurement system but have different uses.
Deposit
THREE UNPATENTED CLAIMS