Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Tweed Property (Tweed Placer), Cecil County, Maryland, USAi
Regional Level Types
Tweed Property (Tweed Placer)Property
Cecil CountyCounty
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 43' 18'' North , 76° 3' 19'' West
Latitude & Longitude (decimal):
39.72167,-76.05528
GeoHash:
G#: dr1cvr45r
GRN:
N27W42
Type:
Property
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Rising Sun2,859 (2017)2.7km
Little Britain372 (2017)8.3km
Oxford5,385 (2017)9.6km
Wakefield609 (2017)12.1km
Port Deposit659 (2017)14.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Delaware Mineralogical Society, Inc.Wilmington, Delaware44km
Mindat Locality ID:
143158
Long-form identifier:
mindat:1:2:143158:5
GUID (UUID V4):
0


Placer deposit in chromite-bearing sands on weathered serpentinite exposure, worked between 1897 and 1899.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4

List of minerals for each chemical element

OOxygen
Oⓘ ChromiteFe2+Cr23+O4
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4

Other Databases

Link to USGS MRDS:10242825

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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

Pearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 787.
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