Hilltop Extension Mine

The Hilltop Extension Mine is a lead, silver, zinc, and copper mine located in Cochise county, Arizona at an elevation of 5,440 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: Hilltop Extension Mine
Secondary: Lilly & Whale Groups

Commodity

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

Location

State: Arizona
County: Cochise
District: California District

Land Status

Land ownership: National Forest
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: Hilltop Extension Mining Co., Arizona Monte Cristo Mining Co., Calumet Divide Mining Co.

Production

Not available

Deposit

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

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: L
Description: Nw Trending Paleozoic Beds Dip 40-45w In This Area

Alterations

Alteration Type: L
Alteration Text: Pyrometasomatic, Silicic

Rocks

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Host Rock
Age Young: Paleocene

Analytical Data

Not available

Materials

Ore: Galena
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Pyrite
Gangue: Quartz

Comments

Comment (Deposit): THE HILLTOP EXTENSION IS AN AREA OF CLAIMS EAST OF THE HILLTOP MINE FOR WHCH PRODUCTION WAS REPORTED SEPARATELY. DEPOSITS ARE SLIGHTLY HIGHER IN THE SECTION THAN AT THE HILLTOP MINE. THIS RECORD CONTAINS DATA FROM DUPLICATE RECORD D011802 OF C.E. SEANOR AND RON WORL WHICH HAS BEEN DELETED FROM MRDS. ; INFO.SRC : 1 PUB LIT

Comment (Location): SE 1/4 SEC 28, TO SW 1/4 OF SEC 34, UTM EST

Comment (Production): A TOTAL OF 400 TONS OF ORE SHIPPED INTERMITTENTLY FROM 1923 TO 1928 . SOME CARRIED 60% PB, 50 OZ/T AG

Comment (Deposit): ORE IN QUARTZ VEINS AND IN PYROMETASOMATIC DEPOSITS IN SILICIFIED AND TILTED LIMESTONES CUT BY INTRUSIVES.

Comment (Workings): EXTENSIVE WORKINGS FROM SEVERAL TUNNELS. ONE TUNNEL IS 570 FT LONG, IN 1927, ONE 300 FT TUNNEL, 100 FT WINZE, 300 FT RAISE, 200 FT DRIFT

Comment (Deposit): RECORD INFORMATION ALSO SUPPLIED BY ABGMT

References

Reference (Deposit): KEITH, S B, 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P 52.

Reference (Deposit): SABINS, 1957, GSA BULL, V. 68, P. 1315

Reference (Other Database): CIMRI

Reference (Production): KEITH, 1973, ARIZ BUR OF MINES BULL 187.

Arizona Gold

"Where to Find Gold in Arizona" 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 Arizona. Read more: Where to Find Gold in Arizona.