Trill Bird Deposit

The Trill Bird Deposit is a mine located in Conejos county, Colorado at an elevation of 10,161 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

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Site Name

Primary: Trill Bird Deposit

Commodity

Tertiary: Gold
Tertiary: Copper

Location

State: Colorado
County: Conejos
District: Ute (Platoro) District

Land Status

Land ownership: Federal
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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1971
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Model Name: Epithermal quartz-alunite Au

Orebody

Not available

Structure

Type: R
Description: San Juan Volcanic Field

Type: L
Description: Platoro Caldera (Rim)

Alterations

Alteration Type: L
Alteration Text: Alteration Generally Argillic But Local Silicic And Propylitic Occur; Fe Oxidation (Hematite Staining)

Rocks

Name: Rhyodacite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Name: Rhyodacite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Rhyodacite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene

Analytical Data

Analytical Data: 0.002 TO 10 OZ/TON AU, UP TO 210 PPM CU

Materials

Ore: Chalcopyrite
Ore: Pyrite
Ore: Gold
Gangue: Goethite
Gangue: Calcite

Comments

Comment (Deposit): DEPOSIT IS DISSEMINATED AU AND MEGASCOPIC PYRITE AND CHALCOPYRITE IN PRECALDERA CONEJOS FM BRECCIAS JUST OUTSIDE CALDERA RIM FAULT. MINERALIZING SOLUTIONS ROSE THROUGH CALDERA RIM FAULT AND ASSOCIATED FRACTURES AND INTO POROUS BRECCIAS. CONEJOS SEQUENCE CUT BY NE-TRENDING ANDESITE PORPHYRY DIKES. PYRITE LOCALIZED IN BRECCIA FRAGMENTS AND MATRIX AND COMPRISES UP TO 5% OF ROCK. ASSAYS INDICATE DISSEMINATED AU ALTHOUGH MEGASCOPIC CHALCOPYRITE AND NATIVE AU FOUND. BIRD INTERPRETS ORIGIN AS LOW-TEMPERATURE GASEOUS TRANSPORT, SIMILAR TO VERA BRECCIA PIPE.

Comment (Location): ALONG ADAMS FORK WEST OF UPPER PLATORO RESERVOIR. ELEV AND LAT-LONG GIVEN ARE FOR CONTACT BETWEEN CONEJOS BRECCIA UNIT AND FLOWS IN E2 SEC. 25 (SECTIONS PROJECTED INTO UNSURVEYED AREA). ; INFO FROM LAND.ST :1975

References

Reference (Deposit): LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MPA I-828.

Reference (Deposit): BIRD, W.H., 1973, THE DEVELOPMENT OF THE SOUTHERN PORTION OF THE PLATORO CALDERA COMPLEX AND ITS RELATED MINERAL DEPOSITS, SOUTHEAST SAN JUAN MOUNTAINS, COLORADO: COLORADO SCHOOL OF MINTE THESIS T-1440.

Colorado Mining Photos

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