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Medford Quarry (Redland Genstar Quarry), Medford, Carroll Co., Maryland, USAi
Regional Level Types
Medford Quarry (Redland Genstar Quarry)Quarry
Medford- not defined -
Carroll Co.County
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 34' North , 77° 0' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Westminster18,670 (2017)1.0km
New Windsor1,400 (2017)9.7km
Hampstead6,359 (2017)13.5km
Manchester4,818 (2017)14.4km
Union Bridge971 (2017)15.2km


A marble quarry in Wakefield Marble (late Precambrian) located near Westminster. Features white with gray-brown, mauve & pink zones). Owned by Genstar Stone Co.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Colour: white, tan
Fluorescence: SW,LW-Bright creamy white,yellow,red MW- brighter colors,
Calcite var: Manganoan Calcite
Formula: (Ca,Mn)CO3
Chalcopyrite
Formula: CuFeS2
Reference: J. Wingard, personal observation 5/1/04
Galena
Formula: PbS
Reference: J. Wingard, personal observation 5/1/04
Magnetite
Formula: Fe2+Fe3+2O4
Description: Oxidized nodules of 1-2 mm tightly packed octahedrons
Reference: J. Wingard, personal observation 5/1/04
Malachite
Formula: Cu2(CO3)(OH)2
Reference: J. Wingard, personal observation 5/1/04
Sphalerite
Formula: ZnS
Colour: Orange
Reference: J. Wingard, personal observation 5/1/04
Todorokite
Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Reference: Mr. Fred Parker, Columbia, MD.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Todorokite4.DK.10(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
var: Manganoan Calcite5.AB.05(Ca,Mn)CO3
Malachite5.BA.10Cu2(CO3)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
AB3X7
Todorokite7.8.1.1(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Unclassified Minerals, Mixtures, etc.
Calcite
var: Manganoan Calcite
-(Ca,Mn)CO3

List of minerals for each chemical element

HHydrogen
H Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
H MalachiteCu2(CO3)(OH)2
CCarbon
C Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
O Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
O CalciteCaCO3
O MalachiteCu2(CO3)(OH)2
O MagnetiteFe2+Fe23+O4
NaSodium
Na Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
MgMagnesium
Mg Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
AlAluminium
Al Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
SSulfur
S SphaleriteZnS
S GalenaPbS
S ChalcopyriteCuFeS2
KPotassium
K Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
CaCalcium
Ca Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Ca Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
Ca CalciteCaCO3
MnManganese
Mn Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Mn Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
FeIron
Fe ChalcopyriteCuFeS2
Fe MagnetiteFe2+Fe23+O4
CuCopper
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
BaBarium
Ba Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
PbLead
Pb 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 - Neoproterozoic
485.4 - 1000 Ma



ID: 3190533
Precambrian-Phanerozoic sedimentary and volcanic rocks

Age: Neoproterozoic to Cambrian (485.4 - 1000 Ma)

Lithology: Metasedimentary/metavolcanic schist

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: 2788231
Sams Creek Metabasalt

Age: Proterozoic (541 - 2500 Ma)

Stratigraphic Name: Sams Creek Metabasalt

Description: Grayish-green, massive to schistose, amygdaloidal metabasalt.

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:{metabasalt}

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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Rocks & Minerals (1990): 65: 407.


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