| Deposit ID | 10067559 |
|---|---|
| MRDS ID | W000343 |
| Record type | Site |
| Current site name | Chantilly Prospect B |
| Geographic coordinates: | -77.41552, 38.88364 (WGS84) |
|---|---|
| Elevation | 110 |
| Relative position | 1.8 KM (1.1 MI) 5.50 DEG. E. 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 |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Malachite | Ore |
| Barite | Gangue |
| Pyrite | Gangue |
| Result | MINERALIZED ZONE: UPPER 3 FT: 5000 PPM CU, 10 PPM AG |
|---|---|
| Result | LOWER 2 FT: 5000 PPM CU, 5 PPM AG |
| Result | 2 FT MALACHITE-RICH ZONE: 20,000 PPM CU, 50 PPM AG |
| Result | 1 FT MALACHITE-RICH ZONE: 10,000 PPM CU, 7 PPM AG |
| Result | GRAB OF MIXED BEDROCK: 5000 PPM CU, 3 PPM AG (D'AGOSTINO AND HANSHAW, 1970). |
| 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 > Sandstone |
| Rock unit name | Diabase;Manassas Sandstone, Newark Group |
| Rock description | Diabase;Manassas Sandstone, Newark Group |
| (1) | -77.41552, 38.88364 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Culpeper Triassic Basin ; Reg.Trends: Northeast-Southwest |
| Type of structure | Local |
| Structure description | Some Faults Cut Across The Diabase Near Chantilly According To The State Map. Drake And Froelich (1977) Indicate Several Faults In The Vicinity Of Chantilly. |
| General form | LINEAR |
|---|---|
| Thickness | 1.5M |
| Depth to top | 0M |
| Depth to bottom | 1.5M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1968 |
| Discoverer | P. Hanshaw And J. Owens |
| District name | Culpeper Basin |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Transcontinental Gas Pipeline Co. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W000343 |
D'AGOSTINO, J.P. AND HANSHAW, P.M., 1970, MALACHITE- AND SPECULARITE-BEARING TRIASSIC SANDSTONE LOCALITIES NEAR CHANTILLY, VIRGINIA: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 700-C, P. C103-C106.
1968 GEOPHYS U.S.G.S. - X-RAY ANALYSES GAVE PERCENTS OF C
D'AGOSTINO AND HANSHAW REFERENCE
| Subject category | Comment text |
|---|---|
| Deposit | THE MALACHITE WAS NOTED ONLY IN THE TRENCH AND COULD NOT BE TRACED, THEREFORE LITTLE IS KNOWN ABOUT THE DIMENSIONS AND ATTITUDE OF THE DEPOSIT. |
| Deposit | THE MALACHITE BEARING SANDSTONE WAS NOTED OCT. 1968 IN A TRENCH EXCAVATION OF THE TRANSCONTINENTAL GAS PIPELINE CO. NO NAME WAS PREVIOUSLY APPLIED TO THIS OCCURRENCE. CHANTILLY PROSPECT "A" IS LOCATED 0.8 KM TO THE NNW. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1972 | Meintzer, Robert E. (Le Van, D.C.) | Virginia Division of Mineral Resources | |
| Updater | 01-JUL-1987 | Sweet, Palmer C. | Virginia Division of Mineral Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.