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Phlogopite from
Brighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA


Locality type:Quarry
Classification
Species:Phlogopite
Formula:KMg3(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Phlogopite data
Locality Data:Click here to view Brighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:201995
Long-form Identifier:1:3:201995:6
GUID (UUID V4):0
Nearest other occurrences of Phlogopite
17.2km (10.7 miles) ⓘFrost Quarry, Davis, Howard County, Maryland, USA
22.3km (13.9 miles) ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA
32.8km (20.4 miles) ⓘMcMahon Quarry (Greenspring Quarry), Pikesville, Baltimore County, Maryland, USA
41.7km (25.9 miles) ⓘMartin Marietta Texas Quarry, Cockeysville, Baltimore County, Maryland, USA
42.3km (26.3 miles) ⓘBeaver Dam Quarry (Baker and Connelly Quarry), Cockeysville, Baltimore County, Maryland, USA
47.4km (29.5 miles) ⓘGilmor Quarry, Baltimore County, Maryland, USA
References
Mines of the Washington D.C Area
Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. Area - Issue 5 of Educational series, Maryland Geological Survey. Department of Natural Resources, Maryland Geological Survey. p.1-148.
 
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