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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: 707-833.

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Year1960
Original EntryPearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 707-833.
Mindat Ref. ID16002191Long-form Identifiermindat:1:5:16002191:8
GUID0
Full ReferencePearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 707-833.
Plain TextPearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 707-833.

Map of Localities

Locality Pages

LocalityCitation Details
Maryland, USA
Discovery workings (Main workings), Bare Hills, Baltimore County, Maryland, USA
Blue Mount Quarry, Blue Mount, Baltimore County, Maryland, USA
Calhoun Mine, Delight, Baltimore County, Maryland, USA
Delight Quarry (Soldier's Delight Quarry; Dyer Quarry), Soldiers' Delight ridge, Delight, Baltimore County, Maryland, USA
Dolfield Placer (Rose Placer), Baltimore County, Maryland, USA
Glyndon Occurrence, Baltimore County, Maryland, USA
Gore Placer, Holbrook, Baltimore County, Maryland, USA
Harris Mine, Holbrook, Baltimore County, Maryland, USA
Old Triplett Placer, Holbrook, Baltimore County, Maryland, USA
Triplett Placer, Holbrook, Baltimore County, Maryland, USA
Weir Mine, Holbrook, Baltimore County, Maryland, USA
Bok Asbestos Mine, Hollofield, Baltimore County, Maryland, USA
Lutz Chromite Placer, Baltimore County, Maryland, USA
McComas Ore Banks, Baltimore County, Maryland, USA
Norris Ore Bank, Baltimore County, Maryland, USA
Choate Mine, Owings Mills, Baltimore County, Maryland, USA
Line pit (Lowe's Mine), Cecil County, Maryland, USA
Harford County, Maryland, USA
Reed Mine, Jarretsville-Dublin Mining District, Harford County, Maryland, USA
Etchison Mine, Montgomery County, Maryland, USA

Mineral Occurrences

LocalityMineral(s)
Discovery workings (Main workings), Bare Hills, Baltimore County, Maryland, USAβ“˜ Actinolite, β“˜ Chlorite Group, β“˜ Chromium-bearing Clinochlore, β“˜ Clinochlore, β“˜ Deweylite, β“˜ Hydromagnesite, β“˜ Magnesite, β“˜ Serpentine Subgroup, β“˜ Talc
Blue Mount Quarry, Blue Mount, Baltimore County, Maryland, USAβ“˜ Serpentine Subgroup
Calhoun Mine, Delight, Baltimore County, Maryland, USAβ“˜ Calcite, β“˜ Deweylite, β“˜ Magnesite, β“˜ Opal, β“˜ Serpentine Subgroup
McComas Ore Banks, Baltimore County, Maryland, USAβ“˜ Chromite, β“˜ Magnetite, β“˜ Serpentine Subgroup
Norris Ore Bank, Baltimore County, Maryland, USAβ“˜ Chromite, β“˜ Magnetite, β“˜ Serpentine Subgroup
Choate Mine, Owings Mills, Baltimore County, Maryland, USAβ“˜ Talc
Unnamed Chromite prospect 13 [of Pearre & Heyl], Owings Mills, Baltimore County, Maryland, USAβ“˜ Chromite, β“˜ Serpentine Subgroup
Caldwell Quarries (Caldwell Quarry), Cecil County, Maryland, USAβ“˜ Albite
Lincoln Farm Placer, Cecil County, Maryland, USAβ“˜ Chromite
Preston Farm Pits, Cecil County, Maryland, USAβ“˜ Albite, β“˜ Chromite, β“˜ Magnesite, β“˜ Serpentine Subgroup
Riley Sand Chrome Property (Riley Quarry), Cecil County, Maryland, USAβ“˜ Chromite
Dinning Rutile prospect, Clermont Mills, Harford County, Maryland, USAβ“˜ Ankerite, β“˜ Biotite, β“˜ Dolomite, β“˜ Limonite, β“˜ Pyrite, β“˜ Serpentine Subgroup, β“˜ Talc, β“˜ Zircon
Harford Talc and Quartz Company Quarry (Maryland Ceramic & Steatite Company Inc), Dublin, Jarretsville-Dublin Mining District, Harford County, Maryland, USAβ“˜ Anthophyllite
Etchison Mine, Montgomery County, Maryland, USAβ“˜ Fuchsite, β“˜ Magnesite, β“˜ Muscovite, β“˜ Rutile, β“˜ Talc, β“˜ Tourmaline


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