The Rapid River Deposit is a beryllium and fluorine-fluorite mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation:
Commodity: Beryllium, Fluorine-Fluorite
Lat, Long: 65.45111, -167.29639
Map: View on Google Maps
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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Rapid River Deposit MRDS details
Site Name
Primary: Rapid River Deposit
Commodity
Primary: Beryllium
Primary: Fluorine-Fluorite
Secondary: Lead
Secondary: Zinc
Tertiary: Tin
Location
State: Alaska
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1961
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: TABULAR ZONES, ELLIPTICAL PIPES
Structure
Type: R
Description: Rapid River Thrust Fault
Type: L
Description: Beds Intricately Folded And Fractured Beneath Thrust
Alterations
Not available
Rocks
Name: Limestone
Role: Associated
Age Type: Associated Rock
Age Young: Early Ordovician
Analytical Data
Analytical Data: SAMPLES ANALYZED FOR F CONTAINED 27.5% AND 27.6%, USGS CIRUCLAR 479, TABLE 6, P. 11.
Analytical Data: BE CONTENT OF 12 SAMPLES: 0.05%-0.38%
Materials
Ore: Chrysoberyl
Ore: Sphalerite
Ore: Galena
Ore: Phenacite
Ore: Bertrandite
Ore: Euclase
Ore: Cassiterite
Gangue: Mica
Gangue: Diaspore
Gangue: Tourmaline
Gangue: Hematite
Unknown: Fluorite
Comments
Comment (Geology): GRANITIC STOCK OR CUPOLA MAY UNDERLIE AREA AT DEPTH GREATER THAN 500 FT. THIN-BEDDED ARGILLACEOUS LIMESTONE OVERLAIN BY MED. TO THICK BEDDED LIMESTONE.
Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
Comment (Location): LARGE BODY OF SURFACE ORE ON WIDE BENCH E OF RAPID RIVER; USGS BULLETIN 1287, PLATE 4. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): DRILLED BY NEWMONT MINING CO., 1963.
Comment (Deposit): VEINS, VEINLETS AND PIPES OF BANDED FLUORITE-BERYLLIUM ORE IN BRECCIATED AND DOLOMITIZED ARGILLACEOUS LIMESTONE; DEPOSITS ALIGNED ALONG RAPID R. THRUST FAULT OVER 4400 FT BY 1000 FT AREA; DRILLING INDICATED A LOWER THRUST 200-300 FT BELOW THAT LOCALIZED ORE IN A TABULAR ZONE DIPPING ABOUT 20 DEGREES S; ZONES OF HIGH-GRADE FLUORITE-BERYLLIUM MINERALIZATION UP TO 25 FT WIDE FOLLOW FRACTURE ZONES ALSO CONTAINING LENTICULAR LAMPROPHYRE DIKES; SURFACE ORE (EXPLOSED IN TRENCH) CONSISTS OF FLUORITE, DIASPORE, TOURMALINE, WHITE MICA, CHRYSOBERYL AND MINOR AMOUNTS OF HEMATITE, EUCLASE, BERTRANDITE, AND PHENCITE(?); DRILL HOLES INTERCEPTED BERYLLIUM ORES AT DEPTHS OF SEVERAL HUNDRED FEET CONTAINING GALENA, SPHALERITE, AND MINOR CASSITERITE; DEPOSIT GRADES EASTWARD INTO NEARLY BARREN F. GR. SILICA.
References
Reference (Deposit): USGS CIRCULAR 479, P. 5, 9, 11.
Reference (Deposit): USGS BULLETIN 1287, P. 72-74, 76-77, PLATE 4.
Reference (Deposit): USGS PROF. PAPER 933, P. 32-33.
Reference (Deposit): USGS OFR 77-796B, P. 5, LOC. 26.
Reference (Other Database): BAG-MF-426-03
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