San Miguel Mine
Alajuela, Costa Rica
9.9705°N 84.4638°W
Mine Overview
The San Miguel Mine is situated in close proximity to the city of Alajuela in Costa Rica. The discovery of this mining site dates back to the year 1826. The mine contains a single well-documented ore vein, boasting a width of approximately 10 meters (32 feet). The prevailing rock type in the area where the mine is situated is andesite.
Site identification and general characteristics. Learn about USGS mines.
Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Gold Metallic Primary
- Manganese Metallic Primary
Location Info
- Alajuela County / State
- Continent Country State County
- North America Costa Rica Alajuela n/a
Notes
ON THE SAN MIGUEL VEIN BETWEEN THE SACRA FAMILIA AND COMPANIA VEINS.
Development
MINE WORKED PROFITABLY UNTIL AFTER 1862.
Orebody
Characteristics of the ore body.
- Width: 10.00 meters (32.81 feet)
- Strike: north 37 east
- Dip: vertical
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 Volcanic Rock (Aphanitic) Intermediate Volcanic Rock Andesite - Andesite - - -
- Host Rock Volcanic Rock (Aphanitic) Intermediate Volcanic Rock Andesite - Andesite - - -
Nearby Deposits
Other deposits in the same region.
-
Los Castros Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
El Balsa Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
Guapinol Gold Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
Oreamunos Gold Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
La Minita Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
La Ciguena Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
Esperanza Silver Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
San Francisco Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.09 miles
-
Quebrada Honda Mine
- Gold commodity Site type Occurrence status
- Alajuela
- 0.87 miles
-
Paciencia Gold Prospect
- Gold commodity Site type Occurrence status
- Alajuela
- 1.02 miles
Footnotes
* Mine bounds on map indicate the general area that a mine occupies. For a 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™
Learn more about the Bureau of Land Management, Public Land Survey System, and mining claims.
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Understanding Claim Ownership
We receive lots of emails from people who find their name or a relative’s name on our site and want to know if this means they have some right to the land listed under that name.
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Understanding BLM Administrative Areas
Whether it is filing a mine or researching one, the administering BLM office is going to be the definitive source.
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Understanding Location Data
Mines handled by the Bureau of Land Management are not mapped by latitude and longitude, instead, these mines harken back to the Public Land Survey System.
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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
OUTCROP OF QUARTZ VEIN CAN BE TRACED ON THE SURFACE FOR ABOUT 700 M.