Mullen Prospect

The Mullen Prospect is a copper 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: Mullen Prospect

Commodity

Primary: Copper
Secondary: Silver
Secondary: Gold

Location

State: Alaska

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Regional Stratigraphy Consists Of Nikolai Greenstone Overlain By Chitistone Limestone; Greenstone-Limestone Section Has Been Thrust Over Younger Tri Sediments

Alterations

Alteration Type: L
Alteration Text: Diorite Altered To Chlorite, Calcite, Talc, Levcoxene, Quartz And Pyrite

Rocks

Name: Greenstone
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic

Name: Greenstone
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic

Analytical Data

Analytical Data: USGS BULL 947, P. 129
Analytical Data: 4 FT CHANNEL SAMPLE: 5.82% CU, TRACEAU, 0.28 OZ/TON AG
Analytical Data: 5 FT CHANNEL SAMPLE: 1.55% CU

Materials

Ore: Bornite
Ore: Chalcopyrite
Ore: Covellite
Ore: Malachite
Ore: Chalcocite
Gangue: Quartz
Gangue: Pyrite
Gangue: Calcite

Comments

Comment (Location): BEST LOCATION: USGS BULL 745, PLATE 3, LOC. 18 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Geology): GEOL.COM: DEPOSIT IS IN CHITISTONE LIMESTONE THAT HAS BEEN INTRUDED BY SMALL BODIES OF NOW-ALTERED DIORITE; NEAR CONTACT WITH NIKOLAI GREENSTONE

Comment (Deposit): SEE ALSO: AMMANN, PEACOCK, CAVE; AREA AROUND MULLEN SIMILAR TO VICINITY OF BLUEBIRD CLAIM; FOR INFORMATION ON DIAGENESIS OF CHITISTONE LIMESTONE AND ITS RELATION TO NIKOLAI GREENSTONE SEE: USGS PP 1212-A ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Workings): EXPLORED BY 3 OPEN CUTS, MORE THAN 800 FT OF UNDERGROUND WORKINGS PLUS 2 INCLINED WINZES; PRESENT CONDITIONS UNKNOWN

Comment (Reserve-Resource): USGS BULL 947-G, P. 129

Comment (Development): COPPER CREEK AREA WAS ACTIVELY PROSPECTED BETWEEN ABOUT 1900 AND 1930

Comment (Deposit): SHEAR ZONE 3 FT WIDE CONTAINS VEINS UP TO 18 IN THICK, LENTICULAR BODIES AND IRREGULAR BUNCHES OF PYRITE, BORNITE, CHALCOPYRITE, COVELLITE AND CHALCOCITE; REPLACEMENT OF LIMESTONE

References

Reference (Deposit): USGS BULL 374, P. 62-63

Reference (Deposit): USGS BULL 745, P. 101-102

Reference (Deposit): USGS BULL 947-G, P. 126-129

Reference (Deposit): USGS BULL 1246, P. 41

Reference (Deposit): USGS MF-438, LOC. 70

Reference (Deposit): USGS OFR 80-892B, LOC. 57

Reference (Deposit): USGS OFR 80-892A

Reference (Other Database): BAG-OFR-80-892B-57

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