| Deposit ID | 10100935 |
|---|---|
| MRDS ID | A010398 |
| Record type | Site |
| Current site name | Granite Gold Mining Co. |
| Alternate or previous names | El Primero Mining and Milling Co. |
| Related records | 10137247 |
| Geographic coordinates: | -148.2137, 60.9715 (WGS84) |
|---|
Political divisions (FIPS codes)
Valdez-Cordova(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Seward D-4(quadrangle 1:63,360 scale)
Seward NE(quadrangle 1:100,000 scale)
Seward C(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Eastern Prince William Sound(hydrologic unit)
Prince William Sound(hydrologic accounting unit)
South Central Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Chugach National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Zinc Critical | Tertiary |
| Antimony Critical | Tertiary |
| Lead | Tertiary |
| Copper | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Sphalerite | Ore |
| Stibnite | Ore |
| Calcite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Result | ASSAYS AVERAGED 0.6 OZ/TON AU WITH MAXIMA OF 2.5 OZ/TON AU AND MINIMA OF 0.3 OZ/TON AU |
|---|
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| Rock unit name | Valdez Group |
| Rock description | Valdez Group;Valdez Group; |
| (1) | -148.2137, 60.9715 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Adjacent To Port Wells Fault |
| Strike | N50-70W |
|---|---|
| Dip | 43-55N |
| Thickness | 4.27M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1912 |
| Year of first production | 1914 |
| Year of last production | 1917 |
| District name | Prince William Sound District |
|---|
| Ownership category | State |
|---|
| Type of workings | Surface/Underground |
|---|---|
| Length | 609.6M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A010398 |
USGS BULLETIN 622, P. 135-138
MINES HANDBOOK, V.14, 1920: NEW YORK, W.H. WEED, P. 147
USGS MISCELLANEOUS FIELD STUDIES 880-A, LOCATION 120
USGS OPEN FILE 80-621, P. 95
MINES HANDBOOK, V.14, 1920: NEW YORK, W.H. WEED, P.147
| Subject category | Comment text |
|---|---|
| Deposit | FISSURE IN INTERBEDDED SLATES AND GRAYWACKES AND IN BIOTITE GRANITE STOCKS AVERAGES 3 FEET IN WIDTH AND CONTINUES FOR AN UNSPECIFIED LENGTH. IN THE PORTION WITH SEDIMENTARY COUNTRY ROCK, THE FISSURE CONSISTS OF SHATTERED SEDIMENTS CEMENTED BY A NETWORK OF QUARTZ VEINLETS. IN THE GRANITE, THE FISSURE IS MORE COMPLETELY FILLED WITH QUARTZ, THOUGH INCLUSIONS OF GRANITE ARE STILL PRESENT. THE ORE BODY IS OFFSET BY SEVERAL FAUTS. SEVERAL SIMILAR FISSURES ARE SUPPOSED TO BE ON SITE, BUT NO POSITIVE INFORMATION INLITERATURE |
| Deposit | LARGEST GOLD PRODUCING SITE ON PRINCE WILLIAM SOUND DURING THE PERIOD 1914-1917 ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1984 | Hirschmann, M. M. (Elliott, R. L.) | U.S. Geological Survey | |
| Editor | 13-APR-1994 | Mosier, Dan | 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.