| Deposit ID | 10094032 |
|---|---|
| MRDS ID | A012330 |
| Record type | Site |
| Current site name | Heckman |
| Alternate or previous names | Unnamed (northwest of Heckman prospect) |
| Related records | 10185920 |
| Geographic coordinates: | -131.61871, 55.2928 (WGS84) |
|---|---|
| Relative position | This site is in section 8, T. 76 S., R. 91 E., of the Copper River Meridian. It includes two, closely-spaced, deposits at sea level on southeastern Gravina Island opposite Pennock Island. They are the Heckman mine, which is about 0.3 mile from Gravina Point, and an unnamed prospect about 0.3 mile northwest of the Heckman. The coordinates of the map site are for the Heckman prospect. The site corresponds to loc. 71 in Elliott and others (1978), and to locs. 287 and 288 in Maas and others (1995). The location of the Heckman mine is accurate within 0.1 mile. |
Political divisions (FIPS codes)
Ketchikan Gateway(Borough)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Ketchikan B-5(quadrangle 1:63,360 scale)
Ketchikan SW(quadrangle 1:100,000 scale)
Ketchikan(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Ketchikan(hydrologic unit)
Southern Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
LG(Federal land areas administered by LG)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Lead | Secondary |
| Zinc Critical | Secondary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Gold | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Model code | 91 |
|---|---|
| USGS model code | 24b |
| Deposit model name | Massive sulfide, Besshi (Japanese deposits) |
| Mark3 model number | 30 |
| Model code | 85 |
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Metamorphic Rock > Schist | ||
| |||
| (1) | -131.61871, 55.2928 |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| District name | Ketchikan |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A012330 | |
| USGS | Alaska Resource Data File | ARDF | KC074 |
Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.
Wright, F.E., and Wright, C.W., 1908, The Ketchikan and Wrangell mining districts, Alaska: U.S. Geological Survey Bulletin 347, 210 p.
Berg, H.C., 1973, Geology of Gravina Island Alaska: U.S. Geological Survey Bulletin 1373, 41 p.
Berg, H.C., Elliott, R.L., and Koch, R.D., 1988, Geologic map of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Mineral Investigations Series Map MF-1807,27 p., scale 1:250,000.
Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
| Subject category | Comment text |
|---|---|
| Deposit | Model Name = Besshi massive sulfide?; Polymetallic veins (Cox and Singer, 1986; models 24b, 22c) |
| Deposit | Model Number = 24b?, 22c |
| Deposit | Other Comments = Brooks (1902, p. 62), noting their similarity, interpreted the Heckman deposit as the southeast continuation of the deposit at the Goldstream (Bell) mine (KC072). ? Also see Production notes. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 03-JUL-1999 | H.C. Berg | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.