Warner Bay Porphyry Prospect

The Warner Bay Porphyry Prospect is a molybdenum 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: Warner Bay Porphyry Prospect

Commodity

Primary: Molybdenum
Secondary: Copper
Secondary: Zinc

Location

State: Alaska

Land Status

Not available

Holdings

Not available

Workings

Not available

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: L
Description: Closely Spaced Joint Set Trending N 45 W

Alterations

Alteration Type: L
Alteration Text: Incomplete Alteration Of Amphibole To Biotite, Slight Chloritization Of Biotite And Rare Sericitic Alteration In Otherwise Unaltered Rocks

Rocks

Name: Tonalite
Role: Host
Age Type: Host Rock
Age in Years: 9.860000+-0.360000
Dating Method: K-Ar
Age Young: Miocene

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age in Years: 6.000000+-
Age Young: Miocene

Analytical Data

Analytical Data: SURFACE SAMPLES: 0.0-0.7% MO, TRACE CU

Materials

Ore: Molybdenite
Ore: Sphalerite
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Hematite
Gangue: Pyrite

Comments

Comment (Development): EXPLORED BY 4 DRILL HOLES TOTALING 760 M IN THE MID-1960'S

Comment (Deposit): CHALCOPYRITE AND MOLYBDENITE OCCUR ON JOINT SURFACES; VEINLETS SPACED 5-10 CM APART; HEMATITE-RICH VEINS WITH MINOR PYRITE, CHALCOPYRITE AND SPHALERITE ARE ALSO PRESENT

Comment (Geology): DEVIL'S BATHOLITH IS A MULTIPHASE, MEDIUM GRAINED GRANODIORITE TO TONALITE PLUTON INTRUDED INTO A COMPLEX TERRANE CONSISTING OF OLDER MIOCENE ANDESITIC AND DACITIC HYPABYSSAL ROCKS CUTTING A SEDIMENTARY SEQUENCE OF CHIGNIK, HOODOO AND TOLSTOI FORMATION UNITS; BATHOLITH IS CUT BY LATE STAGE PEGMATITES; LAST INTRUSIVE PHASE EMPLACED CIRCA 6. M.Y. MIO DEVIL'S BATHOLITH K/AR AGES: 9.86 +/- .36 M.Y. (HBLINGDIOR), 10.08 +/- .14 M.Y. (HBLINTONNALITE.

Comment (Location): USGS MF-1053K, LOC. 11 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Deposit): TONNAGE UNKNOWN; POSSIBLY LARGE BUT VERY LOW GRADE; SEE ALSO: WARNER BAY BRECCIA PIPE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

References

Reference (Deposit): USGS CIRC 772-B, P. B63

Reference (Deposit): USGS OFR 77-168F, P. 7, LOC. 3

Reference (Other Database): BAG-MF-1053K-11

Reference (Deposit): USGS OFR 80-543, P. II, 37, 39-41

Reference (Deposit): USGS OFR 83-783, P. 12-17

Reference (Deposit): USGS MF-1053K, LOC. 11

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