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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Zircon from
Patapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA


Locality type:Construction Site
Classification
Species:Zircon
Formula:Zr(SiO4)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Zircon data
Locality Data:Click here to view Patapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:1617138
Long-form Identifier:1:3:1617138:1
GUID (UUID V4):0
Nearest other occurrences of Zircon
5.5km (3.4 miles) Gaither's Quarry, Baltimore County, Maryland, USA
5.6km (3.4 miles) Weber's Quarry, Ellicott City, Howard County, Maryland, USA
12.2km (7.6 miles) Henryton, Carroll County, Maryland, USA
50.3km (31.3 miles) Gatch Quarry (Gatch Crushed Stone Company Inc.), Harford County, Maryland, USA
54.8km (34.0 miles) Dinning Rutile prospect, Clermont Mills, Harford County, Maryland, USA
69.1km (42.9 miles) New Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA
88.4km (55.0 miles) Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA
91.5km (56.9 miles) Scientists Cliffs beach alluvials, Calvert County, Maryland, USA
92.2km (57.3 miles) Elk Creek pegmatite, Elk Township, Chester County, Pennsylvania, USA
94.2km (58.6 miles) White Rock Acres, Carlisle, Cumberland County, Pennsylvania, USA
References
Stuart Herring CollectionIdentified by Stuart Herring: Visual Identification
 
and/or  
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