Yellowbottom-Boulder Creek Area

The Yellowbottom-Boulder Creek Area is a zinc, lead, silver, and gold mine located in Linn county, Oregon at an elevation of 2,201 feet.

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: Yellowbottom-Boulder Creek Area

Commodity

Primary: Zinc
Primary: Lead
Primary: Silver
Primary: Gold
Secondary: Molybdenum
Secondary: Copper
Tertiary: Arsenic
Tertiary: Bismuth
Tertiary: Antimony

Location

State: Oregon
County: Linn
District: Quartzville Area

Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Orvana Resources Corp. (Pre-

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Form: VEINS

Structure

Type: L
Description: Sardine Syncline (Immediately To East), Shear Zones, Brecciated Zones

Alterations

Alteration Type: L
Alteration Text: Ubiquitous Propylitic Alteration, Structurally Controlled Argillic-Phyllic Alteration, Linear To Cylindrical Zones Of Brecciated And Silicified Rock, And Tourmaline-Quartz Alteration Of Breccia Zones

Rocks

Not available

Analytical Data

Analytical Data: BRECCIATED ROCKS CONTAIN AS MUCH AS 580 PPM AU, 5.5 PPM AG, 495 PPM CU, 50 PPM MO, 520 PPM ZN, 930 PPM PB, 976 PPM AS, 56 PPM SB, AND 53 PPM BI

Materials

Ore: Chalcopyrite
Ore: Pyrite
Ore: Galena
Ore: Sphalerite
Gangue: Calcite
Gangue: Chlorite
Gangue: Tourmaline
Gangue: Quartz
Gangue: Sericite

Comments

Comment (Commodity): GALENA AND SPHALERITE PRESENT ONLY LOCALLY WITHIN AREA AND CHALCOPYRITE HAS BEEN REPORTED BUT NOT SEEN BY NICHOLSON (1988)

Comment (Development): ORVANA COLLECTED AND ANALYZED SAMPLES IN CONJUNCTION WITH EXPLORATION IN THE QUARTZVILLE DISTRICT

Comment (Deposit): PORPHYRY-TYPE SYSTEM SUGGESTED AT DEPTH BENEATH AREA THAT POSSIBLY INCLUDES BRECCIA-PIPE COPPER MINERALIZATION, AN UNPUBLISHED DEPOSIT MODEL BECAUSE AREA INCLUDES MINERALIZED BRECCIA PIPES AND BRECCIATED ZONES. SEVERAL SHEAR ZONES ARE ASSOCIATED WITH MINERALIZATION AND MAY REPRESENT ZONES ALONG WHICH FLUIDS FROM A COOLING PLUTON AT DEPTH MIGRATED (NICHOLSON, 1988)

Comment (Workings): A FEW SMALL TEST PITS NEAR CONFLUENCE OF YELLOWSTONE AND QUARTZVILLE CREEKS

Comment (Geology): OTHER SMALL INTRUSIONS OF VARIOUS COMPOSITIONS ARE PRESENT IN AREA. SULFUR ISOTOPIC COMPOSITIONS INDICATE A MAGAMTIC SOURCE FOR SULFUR AND SULFUR ISOTOPES AND FLUID INCLUSIONS INDICATE TEMPERATURES OF FORMATION OF 157 TO 260 DEGREES C. VOLCANIC ROCKS OF AREA DIP 10-20 DEGREES SE, PRESUMABLY INTO SARDINE SYNCLINE

Comment (Deposit): AREA IS USED BY RECREATIONAL GOLD PANNERS

Comment (Location): AREA IS IMMEDIATELY WEST OF QUARTZVILLE MINING DISTRICT IN A RECREATIONAL MINING CORRIDOR ADMINISTERED BY THE U.S. BUREAU OF LAND MANAGEMENT

References

Reference (Analytical Data): NICHOLSON, 1988

Reference (Deposit): NICHOLSON, D.K., 1988, GEOLOGY, GEOCHEMISTRY, AND MINERALIZATION OF THE YELLOWBOTTOM-BOULDER CREEK AREA, LINN COUNTY, OREGON: CORVALLIS, OREGON STATE UNIVERSITY, M.S. THESIS, 186 P

Oregon Gold

"Where to Find Gold in Oregon" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Oregon. Read more: Where to Find Gold in Oregon.