Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Port Deposit Quarry (Port Deposit Granite Company), Cecil County, Maryland, USAi
Regional Level Types
Port Deposit Quarry (Port Deposit Granite Company)Quarry
Cecil CountyCounty
MarylandState
USACountry

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PhotosMapsSearch
03264660017272262005286.jpg
Overlook of the Workings at the McClanahan Quarry (1890's)

Port Deposit Quarry, Cecil County, Maryland, USA
03264660017272262005286.jpg
Overlook of the Workings at the McClanahan Quarry (1890's)

Port Deposit Quarry, Cecil County, Maryland, USA
08532040017272060871223.jpg
Overlook of the Workings at the McClanahan Quarry (1890's)

Port Deposit Quarry, Cecil County, Maryland, USA
Latitude & Longitude (WGS84):
39° 35' 8'' North , 76° 5' 55'' West
Latitude & Longitude (decimal):
39.58556,-76.09861
GeoHash:
G#: dr1chq6dt
GRN:
N27W42
Type:
Quarry
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Port Deposit659 (2017)2.6km
Perryville4,437 (2018)3.7km
Havre de Grace13,504 (2017)4.1km
Aberdeen15,580 (2017)10.1km
Charlestown1,198 (2017)10.7km
Mindat Locality ID:
143049
Long-form identifier:
mindat:1:2:143049:6
GUID (UUID V4):
0


The Port Deposit quarries, worked since 1817, are in a gneissic granite probably of Cambrian age. It was widely used as a local building stone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ IlmeniteFe2+TiO3
Oⓘ QuartzSiO2
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ QuartzSiO2
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SSulfur
Sⓘ PyriteFeS2
ClChlorine
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ IlmeniteFe2+TiO3
Feⓘ PyriteFeS2

Other Databases

Link to USGS MRDS:10194211

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Merrill, George P., Mathews, Edward B., Clark, Wm. Bullock, Merrill, George P., Mathews, Edward B. (1898) Building and decorative stones of Maryland. Maryland Geological Survey, 2. Maryland Geological Survey. 47-241
Edwards, J. (1971) Directory of mineral producers in Maryland: Maryland Geological Survey Information Circular 11: 12.
Means, J. (2010) Roadside geology of Maryland, Delaware and Washington, D.C.: Mountain press, 346 p.
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