| Deposit ID | 10166305 |
|---|---|
| MRDS ID | DC03296 |
| MAS/MILS ID | 80130009 |
| Record type | Site |
| Current site name | Comstock |
| Related records | 10017335 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -105.58111, 39.98011 (WGS84) |
| Elevation | 3018 |
| Location accuracy | 25(meters) |
| Relative position | Coordinates unlabled shaft at end of short road NW of Caribou (town) and NE of Caribou Shaft on topo. |
Political divisions (FIPS codes)
Boulder(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Nederland(quadrangle 1:24,000 scale)
Denver West(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
St. Vrain(hydrologic unit)
South Platte(hydrologic accounting unit)
South Platte(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Arapaho and Roosevelt National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Boulder |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Ute | 001 S | 073 W | 8 | NW4 of NE4 | Colorado |
| Commodity | Importance |
|---|---|
| Lead | Primary |
| Silver | Primary |
| Zinc Critical | Primary |
| Copper | Secondary |
| Gold | Secondary |
| Materials | Type of material |
|---|---|
| Sphalerite | Ore |
| Galena | Ore |
| Calcite | Unknown |
| Chalcopyrite | Unknown |
| Monazite | Unknown |
| Ore Body (1) | -105.58111, 39.98011 |
|---|
| Strike | E50W | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 70S | ||||||||||||||||||||||||||||||
| Length | 23M | ||||||||||||||||||||||||||||||
| Width | 1M | ||||||||||||||||||||||||||||||
| Area | 3HA | ||||||||||||||||||||||||||||||
| Depth to top | 20M | ||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1911 |
| Year of first production | 1911 |
| District name | Caribou |
|---|
| Type of mineral rights | Patented |
|---|
| Ownership category | Federal |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Pandora Metals Inc-Richard Sigismonde |
| ID | 501580 |
| Interest | 100 |
| Home office | Colorado |
| Year | 1976 |
| Type | Owner |
|---|---|
| Owner | A.E. Blakesley |
| Year | 1957 |
| Type of workings | Underground | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 450M | ||||||||||||||||||||||||||
| Overall depth | 71M | ||||||||||||||||||||||||||
| |||||||||||||||||||||||||||
| Type of workings | Underground |
|---|---|
| Name of workings | shaft |
| Overall depth | 137.16M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 80130009 | |
| USGS | Mineral Resources Data System | MRDS | DC03296 | MAS references MRDS |
| Mine Safety and Health Administration | MSHA | MSHA | 501580 |
RICHARD SIGISMONDE-P.O. BOX 957 BOULDER COLO. PH 447-9170
CONSV. DIV. COMP. DATE, 10,62
MOORE AND OTHERS, 1957, USGS BULL. 1030-N, p. 545-546.
| Subject category | Comment text |
|---|---|
| Deposit | MINE HAS NEVER PRODUCED IN QUANTITY & IS PRESENTLY OPEN BUT RESERVES ARE FOR COMSTOCK-CARIBOU HILL BELOW PRESENT ORE HOR ONLY SAMPLING ORE HAS BEEN SENT TO SMELTER (AS&R-LEADVILLE) ORE MAY BE DIRECT SHIPPED TO SMELTER-PROPOSED OR MILLED AT M (PROPOSED) ON ADJACENT CARIBOU PROPERTY FOR ANALYSIS ORE BDY WAS SPLIT 50:50 BETWEEN THE TWO PROPERT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 1984-02-27 | Nettleton | U.S. Bureau of Mines | |
| Editor | 2007-05-29 | Melton, Greg | U.S. Geological Survey | |
| Editor | 2013-12-20 | Wilson, Anna B | U.S. Geological Survey | merged and deleted duplicate record 10017335 and corrected several fields. |
| Reporter | 1973-03-01 | Conservation Division Files | U.S. Geological Survey | MRDS DC03296 = 10017335 |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 06/20/1985 |
|---|---|
| MSHA mine ID | 0501580 |
| Mine name (MSHA) | Comstock |
| Current operator | Aquarius Mining Company |
| Current controller (parent) | Sigismond Richard A |
| Mine type | Underground (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.