Unnamed (southeast flank of White Mountain)

Prospect in Alaska, United States with commodities Gold, Silver, Lead, Copper, Iron

Geologic information

Identification information

Deposit ID 10000748
MRDS ID A011388
Record type Site
Current site name Unnamed (southeast flank of White Mountain)
Alternate or previous names Royal Development Co.

Geographic coordinates

Geographic coordinates: -143.02367, 62.37358 (WGS84)
Relative position Best location: Lowe and others, 1982, USGS GQ-1566, loc. M4. Accurate within 500 ft radius.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Copper Secondary
Iron Secondary

Comments on the commodity information

  • Ore Material = Gold (native)

Materials information

Materials Type of material
Anglesite Ore
Cerussite Ore
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Garnet Gangue
Magnetite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -143.02367, 62.37358

Comments on the geologic information

  • Geologic Description = Disseminated pyrite and quartz-pyrite veins in small diorite/granodiorite stock and in associated contact metamorphic aureole. The surface ore milled in 1907 was apparently derived from gossan overlying the contact between a Cretaceous diorite stock and host Triassic limestone. Gossan along intrusive contacts reported to pan free gold. See also: Nabesna mine (NB016).

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Surface and underground. Two tunnels driven between 1907 and 1914 totaled 130 ft in length. Mining was in surface cut where a 12 in to 4 ft width was mined along contact deposit. Sample taken over 16 in width across contact deposit assayed 0.06 oz/ton Au and 0.20 oz/ton Ag (Pilgrim, E.R., 1931). Ore containing almost 1.5 oz/ton Au milled in 1907 was probably not representative of deposit (USGS MF-655K, loc. 14). Extensive diamond drilling in 1980's.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011388
USGS Alaska Resource Data File ARDF NB021

Bibliographic references

  • Deposit

    Moffit, F.H., 1943, Geology of the Nutzotin Mountains, Alaska, with a section on the igneous rocks, by R. C. Wayland, and Gold deposits near Nabesna, by R. C. Wayland, 1943: U.S. Geological Survey Bulletin 933-B, p. 103-199.

  • Deposit

    Richter, D.H., Singer, D.A., and Cox, D.P., 1975, Mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-655-K, scale 1:250,000.

  • Deposit

    Lowe, P.C., and others, 1982, Geologic map of the Nabesna B-5 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1566, scale 1:63,360.

Comments on the references

  • Primary Reference = Wayland, 1943, USGS B 933B

General comments

Subject category Comment text
Deposit Model Name = Lode: disseminated, skarn, gossan?
Deposit Other Comments = See also: Nabesna mine (NB016)

Reporter information

Type Date Name Affiliation Comment
Reporter 06-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 06-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 06-FEB-1997 Richter, D.H. U.S. Geological Survey