| Deposit ID | 10067557 |
|---|---|
| MRDS ID | W000341 |
| Record type | Site |
| Current site name | Spencer Farm Prospect |
| Geographic coordinates: | -77.4733, 38.90392 (WGS84) |
|---|---|
| Elevation | 79 |
| Relative position | 3.8 KM (2.4 MI) WNW OF CHANTILLY. |
Political divisions (FIPS codes)
Fairfax(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Herndon(quadrangle 1:24,000 scale)
Washington West(quadrangle 1:100,000 scale)
Washington(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Middle Potomac-Anacostia-Occoquan(hydrologic unit)
Potomac(hydrologic accounting unit)
Potomac(hydrologic subregion)
Mid Atlantic(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Virginia | Fairfax |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Malachite | Ore |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase | ||||
| Rock unit name | Diabase | ||||
| Rock description | Diabase | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Mudstone |
| Rock unit name | Diabase Sill;Balls Bluff Siltstone, Bull Run Shale, Newark Group |
| Rock description | Diabase Sill;Balls Bluff Siltstone, Bull Run Shale, Newark Group |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone |
| (1) | -77.4733, 38.90392 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Culpeper Triassic Basin ; Reg.Trends: Northeast-Southwest |
| General form | IRREGULAR VEINLETS |
|---|---|
| Length | 9M |
| Width | 3M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1947 |
| Discoverer | R. S. Cannon |
| District name | Culpeper Basin |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W000341 |
LUTTRELL, G.W., 1966, BASE- AND PRECIOUS-METAL AND RELATED ORE DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 7, 167 P.
CANNON, R. S. JR., UNPUB. MEMO IN CU COMMODITY FILE , U.S. GEOLOGICAL SURVEY.
MILTON, CHARLES, 1948, GEOCHEMISTRY REPORT F-61 IN CU COMMODITY FILES: U.S. GEOLOGICAL SURVEY REPORT FOR R.S. CANNON.
1948 GEOCHEM USGS-C.MILTON; GOOD CU TEST
CANNON UNPUBLISHED MEMO
| Subject category | Comment text |
|---|---|
| Deposit | MINERALIZATION IS RELATED TO THE CONTACT OF THE SEDIMENTARY ROCK AND DIABASE. |
| Deposit | NO VEGETATION GROWS IN THE AREA UNDERLAIN BY THE COPPER MINERALS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1972 | Wright, Nancy A. | U.S. Geological Survey | |
| Updater | 01-JAN-1980 | Meintzer, Robert E. (Le Van, D.C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.