Baltimore Mine

The Baltimore Mine is a silver, copper, gold, and lead mine located in Saguache county, Colorado at an elevation of 9,724 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: Baltimore Mine

Commodity

Primary: Silver
Primary: Copper
Primary: Gold
Primary: Lead
Secondary: Zinc

Location

State: Colorado
County: Saguache
District: Bonanza (Kerber Creek)

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1926
Years of Production:
Organization:
Significant: N

Physiography

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

Mineral Deposit Model

Not available

Orebody

Form: PINCH AND SWELL

Structure

Type: R
Description: Sawatch Range, San Juan Volcanic Field, Rio Grande Rift

Type: L
Description: Bonanza Caldera

Alterations

Alteration Type: L
Alteration Text: Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.

Rocks

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

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

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

Name: Latite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene

Analytical Data

Analytical Data: 13% PB, 0.3% CU, 6 TO 7 02/TON AG, 0.01 TO 0.02 02/TON AU

Materials

Ore: Chalcopyrite
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Ore: Tennantite

Comments

Comment (Workings): TWO SHAFTS; NEWER SHAFT IS AT LEAST 100 FT DEEP WITH AT LEAST 120 FT OF DRIFTING WESTWARD AND A SHORT CROSSCUT TO THE SOUTH

Comment (Location): S-T-R, LAT-LONG, AND ELEV. TAKEN FROM BURBANK'S (1932) PLATE 1 (SCALE 1:12000). MINE OR CLAIM LIES ALONG KERBER CR. ACROSS GULCH FROM BONANZA MINE

References

Reference (Deposit): PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.

Reference (Deposit): BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.