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Eiler Prospect, Frederick Co., Maryland, USAi
Regional Level Types
Eiler ProspectProspect
Frederick Co.County
MarylandState
USACountry

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Latitude & Longitude (WGS84): 39° 32' 29'' North , 77° 12' 13'' West
Latitude & Longitude (decimal): 39.54139,-77.20361
GeoHash:G#: dr10gnq13
USGS MRDS Record:10243301
Locality type:Prospect
KΓΆppen climate type:Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Union Bridge971 (2017)3.8km
Libertytown950 (2011)7.0km
New Windsor1,400 (2017)8.2km
Woodsboro1,196 (2017)9.6km
Linganore8,543 (2011)11.2km


Pit prospected in 1941, site since obliterated, in marble. Assays reported 0.01 ounce Au and 0.12 ounce Ag per ton along with copper, zinc and lead values.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

β“˜ Calcite
Formula: CaCO3
Reference: Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p.
β“˜ Galena
Formula: PbS
Reference: Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p.
β“˜ Sphalerite
Formula: ZnS
Reference: Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Galena2.CD.10PbS
β“˜Sphalerite2.CB.05aZnS
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
β“˜Galena2.8.1.1PbS
β“˜Sphalerite2.8.2.1ZnS
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
β“˜Calcite14.1.1.1CaCO3

List of minerals for each chemical element

CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ CalciteCaCO3
SSulfur
Sβ“˜ GalenaPbS
Sβ“˜ SphaleriteZnS
CaCalcium
Caβ“˜ CalciteCaCO3
ZnZinc
Znβ“˜ SphaleriteZnS
PbLead
Pbβ“˜ GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cambrian
485.4 - 541 Ma



ID: 3192822
Paleozoic sedimentary rocks

Age: Cambrian (485.4 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Proterozoic
541 - 2500 Ma



ID: 2808250
Libertytown Metarhyolite

Age: Proterozoic (541 - 2500 Ma)

Stratigraphic Name: Libertytown Metarhyolite

Description: Purple, bluish-black, and red, dense, fine-grained metarhyolite with feldspar phenocrysts; interbedded with blue and purple amygdaloidal metaandesite; both rhyolite and andesite interbedded with blue, purple, and green phyllitic slates.

Comments: Original map source: In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.

Lithology: Major:{metarhyolite,metaandesite}, Minor:{slate}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28: 38-39.


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