The Boulder Creek Placer is a tin 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
Boulder Creek Placer MRDS details
Site Name
Primary: Boulder Creek Placer
Commodity
Primary: Tin
Tertiary: Tungsten
Tertiary: REE
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: 1900
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: BEST SAMPLE: 4.49 LB SN/CY, 5.5 FT MINING SECTION, USBM IC7878, P. 65.
Analytical Data: 6 CHURN-DRILL SAMPLES FROM UPPER PART OF CREEK CONTAINED 1.02-2.89 LB/CY SN OVER MINING SECTIONS OF BETWEEN 9.0-22 FT
Materials
Ore: Cassiterite
Gangue: Tourmaline
Gangue: Hematite
Gangue: Apatite
Gangue: Zircon
Unknown: Scheelite
Unknown: Xenotime
Unknown: Monazite
Comments
Comment (Location): B.M. CHURN-DRILL LINE NO. 1, CLAIM NO. 2 BELOW DISC., USBM IC7871, FIG. 25, P. 49. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Commodity): NB AND TA DETECTED IN ANALYSIS; MAX EU OF CON.: 0.025%
Comment (Development): CLAIMS STAKED: 1943; CHURN DRILLING UNDER DMEA CONTRACT: 1953.
Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
Comment (Deposit): CASSITERITE, SCHEELITE, MONAZITE AND U-TH-RARE EARTH-BEARING MINERALS FOUND IN CHURN-DRILL SAMPLES; SEVERAL CHURN-DRILL HOLES INDICATED BETTER THAN 1 LB/CY TIN CONTENT; GRAVEL UP TO 53 FT DEEP INDICATED BY DRILLING; PLACER GRAVELS FORM AN ALLUVIAL FAN ON THE COASTAL PLAIN AT MOUTH.
Comment (Geology): MAJOR.UNITS: GRANITE AND LIMESTONE ; REG.COM: IDENTIFIED IN CONCENTRATES: CASSITERITE, TOURMALINE, HEMATITE, SCHEELITE, ZIRCON, MONAZITE, XENOTIME, APATITE.
References
Reference (Deposit): USGS PROF. PAPER 2, P. 49.
Reference (Deposit): USBM RI4345, P. 4-7, 12,.
Reference (Deposit): USBM IC7878, P. 1-2, 9, 13-14, 17-18, 20, 43, 47-48, 50-67.
Reference (Deposit): USBM IC6737, P. 18-19, 21, 23, 29, 32-33.
Reference (Deposit): USGS OFR 77-796-B, P. 4, LOC. 4.
Reference (Other Database): BAG-MF-426-23
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