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Medford Quarry (Redland Genstar Quarry), Medford, Carroll Co., Maryland, USA

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Latitude & Longitude (WGS84): 39° 34' North , 77° 0' West
Latitude & Longitude (decimal): 39.56667,-77.00000
GeoHash:G#: dr11pffk9
Locality type:Quarry
Köppen climate type:Cfa : Humid subtropical climate


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

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

MEDFORD QUARRY, CARROLL COUNTY, MARYLAND, USA

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,
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
'Manganoan Calcite'
Formula: (Ca,Mn)CO3
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
'Chalcopyrite'2.CB.10aCuFeS2
'Galena'2.CD.10PbS
'Sphalerite'2.CB.05aZnS
Group 4 - Oxides and Hydroxides
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Todorokite'4.DK.10(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Malachite'5.BA.10Cu2(CO3)(OH)2
Unclassified Minerals, Rocks, etc.
'Manganoan Calcite'-(Ca,Mn)CO3

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, Rocks, etc.
'Manganoan Calcite'-(Ca,Mn)CO3

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C Manganoan Calcite(Ca,Mn)CO3
OOxygen
O CalciteCaCO3
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O Manganoan Calcite(Ca,Mn)CO3
O Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
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 ChalcopyriteCuFeS2
S GalenaPbS
S SphaleriteZnS
KPotassium
K Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
CaCalcium
Ca CalciteCaCO3
Ca Manganoan Calcite(Ca,Mn)CO3
Ca Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
MnManganese
Mn Manganoan Calcite(Ca,Mn)CO3
Mn Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
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

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


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