| Deposit ID | 10000499 |
|---|---|
| MRDS ID | A010688 |
| Record type | Site |
| Current site name | Chichagoff Mine |
| Alternate or previous names | De Groff, Golden Gate |
| Geographic coordinates: | -136.10202, 57.6636 (WGS84) |
|---|
Political divisions (FIPS codes)
Sitka(Borough)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Sitka C-7(quadrangle 1:63,360 scale)
Sitka NW(quadrangle 1:100,000 scale)
Sitka W OE(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Central Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Tongass National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
West Chichagof-Yakobi Wilderness(Wilderness)
Wilderness FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Lead | Secondary |
| Arsenic Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Gold | Ore |
| Calcite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| Rock unit name | Sitka Graywacke;Sitka Graywacke |
| Rock description | Sitka Graywacke;Sitka Graywacke |
| Type of structure | Regional |
|---|---|
| Structure description | Sitka Fault Zone Is A Major Regional Feature |
| Type of structure | Local |
| Structure description | Chichagof Fault Localizes Ore Shoots |
| General form | TABULAR, LENTICULAR |
|---|---|
| Dip | } |
| Plunge | 70 DEGREES |
| Plunge direction | SE |
| Width | 2.44M |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1905 |
| Year of first production | 1906 |
| Year of last production | 1943 |
| District name | Chichagof District |
|---|
| Ownership category | National Forest |
|---|
| Type of workings | Surface |
|---|---|
| Overall depth | 1203.96M |
| Overall length | 1447.8M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A010688 |
USGS OFR 78-450, P. 28-31
USGS B929, P. 78-81, 86-101
ADGGS SPEC REPT 31, P. 46
ADGGS SPEC REPT 31
| Subject category | Comment text |
|---|---|
| Deposit | DEPOSITS ARE QUARTZ BODIES IN FAULT ZONES. ORE SHOOTS ARE STEEPLY PLUNGING AND LOCALIZED ALONG INTERSECTIONS OF CHICHAGOF FAULT AND SPLAYS FROM IT AND BY ROLL IN MAIN FAULT. STORE WIDTH OF SHOOTS GENERALLY 2-8 FT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1984 | Elliott, R. L. | U.S. Geological Survey | PARSED DATA INTO ORE BODY MULTIVALUED FIELDS |
| Editor | 13-APR-1994 | Mosier, Dan | U.S. Geological Survey | PARSED DATA INTO WORKINGS MULTIVALUED FIELDS |
| Editor | 30-MAY-1995 | Waller, Nichelle (Mosier, Dan) | U.S. Geological Survey | |
| Editor | 30-MAY-1995 | Waller, Nichelle (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.