| Deposit ID | 10213108 |
|---|---|
| MRDS ID | M022116 |
| MAS/MILS ID | 0060570323 |
| Record type | Site |
| Current site name | Idaho Maryland |
| Alternate or previous names | Idaho Maryland-Brunswick, Maryland/Howard Hill/Morning Dew, Morning Dew/Rip Van Winkle, Schofield/Baby Con./Black Hawk, Gambler Gold and Silver/Morehouse, Eureka Construction/Haphine/Tracy, South Idaho Cons. |
| Related records | 10035005 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -121.03853, 39.22349 (WGS84) |
| Elevation | 777 |
| Location accuracy | 500(meters) |
Political divisions (FIPS codes)
Nevada(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Grass Valley(quadrangle 1:24,000 scale)
Yuba City(quadrangle 1:100,000 scale)
Chico(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Bear(hydrologic unit)
Lower Sacramento(hydrologic accounting unit)
Sacramento(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Nevada |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 016 N | 008 E | 26 | California |
| Commodity | Importance |
|---|---|
| Copper | Secondary |
| Gold | Primary |
| Main Entrance (1) | -121.03853, 39.22349 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Prospect |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | Yes |
| Discovery year | 1990 |
| Mining method | Combined Methods |
| District name | Grass Valley Area |
|---|
| Type of mineral rights | Patented |
|---|---|
| Type of mineral rights | Located Claim |
| Type of mineral rights | Other |
| Ownership category | Unknown |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Emperor Gold Corp. |
| Interest | 100 |
| Home office | California |
| Year | 1996 |
| First year | 1993 |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1996 | ||||||||||||||
| Demonstrated | 8273000mt ore | ||||||||||||||
| Total resources | 8273000mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060570323 | |
| USGS | Mineral Resources Data System | MRDS | M022116 | MAS references MRDS |
RANDOL MINING DIRECTORY, 1996/97, U.S. MINES AND MINING
COMPANIES, P158.
EMPEROR GOLD CORPORATION, 1995 ANNUAL REPORT, P8.
DOM BULLETIN 144, PT 3, P 278
IN SECTIONS 23-26 AND 36
EMPEROR GOLD CORPORATION. GEORGE CROSS NEWS LETTER. "FINAL
PERMITS ISSUED FOR DE-WATERING AND RENEWED EXP. OF CA'S
2ND LARGEST AU PROD.-UG WORK TO START MID-MARCH". 2/3/96.
4PP.
GEOLOGICAL SUMMARY OF THE IDAHO-MARYLAND MINE. ROSS GUENTHER
PROJECT MANAGER. 4PP.
| Subject category | Comment text |
|---|---|
| Deposit | PERMITTING IS UNDERWAY AND A FULL FEASIBILITY STUDY IS EXPECTED TO BE COMPLETED BY THE END OF 1995. IT IS ANTICIPATED THAT PRODUCTION WOULD FOLLOW WITHIN 12 TO 18 MONTHS. THE FINAL ENVIRONMENTAL IMPACT REPORT WAS APPROVED AND CERTIFIED IN LATE OCT. 1995. THE USE PERMIT, REQUIRED TO DEWATER THE BRUNSWICK SHAFT, WHICH WILL ALLOW CORE DRILLING AND FURTHER EXPLORATION WAS RECEIVED IN JAN. 1996. IN ANTICIPATION OF RECEIVING THE USE PERMIT, COMPANY HAS ESSENTIALLY COMPLETED STUDIES OF THE PUMP DESIGNS, ELECTRICAL REQUIREMENTS, HOIST, HEADFRAME AND OTHER NEEDS FOR THE DEWATERING AND SHAFT REHABILITATION. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 09-OCT-97 | Buckingham, David A. | U.S. Bureau of Mines |
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.