Boulder Creek Placer

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

Satelite View

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.

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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