Brentsville Prospect

Occurrence in Prince William county in Virginia, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10067541
MRDS ID W000324
Record type Site
Current site name Brentsville Prospect

Geographic coordinates

Geographic coordinates: -77.49913, 38.6881 (WGS84)
Elevation 76
Relative position IN BRENTSVILLE
(click for info)

Geographic areas

Country State County
United States Virginia Prince William

Comments on the location information

  • LOCATION IS 200 M SE OF THE OLD COURTHOUSE.

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • NO DIABASE DIKES WERE FOUND IN THE AREA. DEPOSITS ARE SMALL AND LOW-GRADE.

Materials information

Materials Type of material
Malachite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Bull Run Shale (Newark Group);Manassas Sandstone (Newark Group)
    Rock description Bull Run Shale (Newark Group);Manassas Sandstone (Newark Group)
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -77.49913, 38.6881

Geologic structures

Type of structure Regional
Structure description Ne-Sw Trend, Culpeper Triassic Basin

Ore body information

  • General form IRREGULAR

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Culpeper Basin

Comments on the reserve resource information

  • "THE AMOUNT OF MINERAL MATTER IN THE SHALE IS QUITE LOW."

Comments on the workings information

  • VISITED THE SITE IN JUNE 1987. BELIEVE PROSPECT TO BE ON MACHEN PROPERTY. ONLY SMALL BITS OF TRIASSIC SHALE WERE SEEN IN THE FIELD.

Comments on development

  • NO ACTIVE PROSPECTING HAS BEEN CONDUCTED.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W000324

Bibliographic references

  • Deposit

    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.

  • Deposit

    ROBERTS, J.K., 1928, THE GEOLOGY OF THE VIRGINIA TRIASSIC: VIRGINIA GEOLOGICAL SURVEY BULLETIN 29, 205 P.

  • Deposit

    1920 GEOLMAP VA. GEOL. SURV.: MAPPED ARE

  • Reserve-Resource

    ROBERTS (1928)

General comments

Subject category Comment text
Deposit CU OCCURS A FEW HUNDRED FT. SE. OF THE OLD COURTHOUSE NEAR BRENTSVILLE AND IN A NEARBY SANDSTONE QUARRY. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Wright, Nancy A. U.S. Geological Survey
Updater 01-JUL-1987 Sweet, Palmer C. (Meintzer, Robert E.) U.S. Geological Survey