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Ford Mine, Potomac, Montgomery County, Maryland, USAi
Regional Level Types
Ford MineMine (Abandoned)
PotomacCensus-designated Place
Montgomery CountyCounty
MarylandState
USACountry

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PhotosMapsSearch
06085880017272030252419.jpg
Northern shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
04479220017272030265197.jpg
Small dump next to shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
06085880017272030252419.jpg
Northern shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
04479220017272030265197.jpg
Small dump next to shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
06085880017272030252419.jpg
Northern shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
04479220017272030265197.jpg
Small dump next to shaft

Shaft #1, Ford Mine, Potomac, Montgomery County, Maryland, USA
Latitude & Longitude (WGS84):
39° 0' 51'' North , 77° 14' 18'' West
Latitude & Longitude (decimal):
39.01431,-77.23845
GeoHash:
G#: dqcjfqkdv
GRN:
N27W43
Type:
Mine (Abandoned) - last checked 2024
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Potomac44,965 (2011)2.6km
Great Falls15,427 (2011)4.7km
Travilah12,159 (2011)6.4km
North Potomac24,410 (2011)8.0km
Cabin John2,280 (2011)8.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Gem, Lapidary, and Mineral Society of Montgomery County, MD., Inc.Rockville, Maryland11km
Northern Virginia Mineral Club, Inc.Arlington, Virginia19km
Southern Maryland Rock and Mineral ClubClinton, Maryland40km
American Fossil FederationBowie, Maryland45km
Maryland Geological SocietyBowie, Maryland45km
Mindat Locality ID:
11206
Long-form identifier:
mindat:1:2:11206:1
GUID (UUID V4):
0


An abandoned gold property, one of many in the area tapping northerly trending quartz veins cutting schist of the Cambrian to Proterozoic Mather Gorge Formation, part of what was previously called the Wissahickon Formation. 600 meters of workings consist of a series of cuts, trenches, pits and shafts along two nearly parallel veins converging to the north. Coordinates are for the main cut at the north end. Started about 1890.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

7 valid minerals.

Detailed Mineral List:

ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Gold
Formula: Au
ⓘ Gold var. Electrum
Formula: (Au,Ag)
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Tetradymite
Formula: Bi2Te2S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold
var. Electrum		1.AA.05(Au,Ag)
ⓘ1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘTetradymite2.DC.05Bi2Te2S
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ GoethiteFe3+O(OH)
OOxygen
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ PyriteFeS2
Sⓘ TetradymiteBi2Te2S
FeIron
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
AgSilver
Agⓘ Gold var. Electrum(Au,Ag)
TeTellurium
Teⓘ TetradymiteBi2Te2S
AuGold
Auⓘ Gold var. Electrum(Au,Ag)
Auⓘ GoldAu
BiBismuth
Biⓘ TetradymiteBi2Te2S

Localities in this Region

USA

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

www.mgs.md.gov (n.d.) http://www.mgs.md.gov/geology/minerals_energy_resources/gold.html
Weed, W.H., (1905) Notes on the gold veins near Great Falls, Maryland : U.S. Geol. Survey Bull. 260, p. 128-131.
Crosby, W., W. Clark, E. Matthews & J. Grasty (1909) Maryland Geological Survey Volume VIII: Part II: 151.
Ulke, Titus (1936) Sites of minerals, mines and quarries found within a 50 mile radius of Washington, D. C., Rocks and Minerals: 11(8): 120-122.
Ulke, Titus (1939) Gold mining past and present near Washington, D. C. :Rocks & Minerals: 14 (10): 299-305.
Ostrander, Charles W., Price, Jr, Walter E. (1940) Minerals of Maryland. The Natural History Society of Maryland, Baltimore, Maryland, USA. 14pp.
Reed, J.C. Jr. & J.C. Reed (1969) Gold veins near Great Falls, Maryland: U. S. Geological Survey Bulletin 1286, 22 p.
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