| Locality | Mineral(s) |
|---|
| Hilton Quarry, Baltimore City, Maryland, USA | β Albite, β Biotite, β Chlorite Group, β Epidote, β Garnet Group, Hornblende, β Microcline, β Muscovite, β Pyrite, β Schorl, β Siderite, β SphΓ€rosiderite |
| Beaver Dam Quarry (Baker and Connelly Quarry), Cockeysville, Baltimore County, Maryland, USA | β Calcite, β Dolomite, β Phlogopite, β Quartz, β Schorl, β Wollastonite |
| Gilmor Quarry, Baltimore County, Maryland, USA | β Calcite, β Garnet Group, β Phlogopite, β Tremolite, β Vermiculite |
| Harris Mine, Baltimore County, Maryland, USA | β Calcite, β Chalcedony, β Chromite, β Quartz, β Serpentine Subgroup, β Talc |
| Weir Mine, Holbrook, Baltimore County, Maryland, USA | β Calcite, β Deweylite, β Serpentine Subgroup, β Talc |
| Southern pit οΌHollofield quarries, Hollofield, Baltimore County, Maryland, USA | β Aragonite, β Bronzite, β Calcite, β Chlorite Group, β Enstatite, β Garnet Group, β Laumontite, β Pyrite, β Pyrrhotite, β Vermiculite |
| Milford Quarry, Baltimore County, Maryland, USA | β Actinolite, β Albite, β Analcime, β Augite, β Calcite, β Chalcopyrite, β Chlorite Group, β Epidote, β Garnet Group, Hornblende, β Kaolinite, β Magnetite, β Marcasite, β Molybdenite, β Muscovite, β Natrolite, β Phillipsite Subgroup, β Plagioclase, β Prehnite, β Pyrite, β Quartz, β Rutile, β Scapolite, β Schorl, β Scolecite, β Talc, β Titanite |
| Avondale ore banks, Avondale, Carroll County, Maryland, USA | β Goethite, β Hematite |
| Mineral Hill Mine, Louisville, Carroll County, Maryland, USA | β Augite, β Chalcanthite, β Garnet Group, β Melanterite, β Muscovite, β Tenorite, β Tremolite, β Zoisite |
| Ruby Quarry; Ruby Flint, Carroll County, Maryland, USA | β Limonite, β Pyrite, β Quartz |
| Carroll Mine, Sykesville, Carroll County, Maryland, USA | β Actinolite, β Azurite, β Bornite, β Chalcanthite, β Chrysocolla, β Epidote, β Garnet Group, Hornblende, β Limonite, β Linnaeite, β Malachite, β Siderite, β Zoisite |
| Union Bridge Quarry & Cement Plant (Lehigh Portland Cement Company; Union Bridge Shale Pit), Union Bridge, Carroll County, Maryland, USA | β Calcite, β Chlorite Group, β Malachite, β Muscovite, β Quartz, β Sericite |
| Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USA | β Beidellite, β Calcite, β Chalcedony, β Chlorite Group, β Deweylite, β Dolomite, β Magnesite, β Opal, β Pyrite, β Quartz, β Wad |
| Port Deposit Quarry (Port Deposit Granite Company), Cecil County, Maryland, USA | β Biotite, β Chlorite Group, Hornblende, β Ilmenite, β K Feldspar, β Pyrite, β Quartz |
| Popes Creek, Charles County, Maryland, USA | β Glauconite, β Gypsum |
| Frederick County, Maryland, USA | β Cerussite |
| Catoctin/Catoctin Furance Banks, Frederick County, Maryland, USA | β Goethite, β Hematite, β Limonite |
| Cox Mines (Mountain View Mine), Frederick County, Maryland, USA | β Smithsonite |
| Frederick Gold Mine (Clifton Gold Mine), Frederick County, Maryland, USA | β Galena, β Pyrite, β Quartz, β Talc |
| Dolyhyde Mine (Dolly Hyde Mine), Libertytown, Frederick County, Maryland, USA | β Calcite, β Chalcocite, β Chrysocolla, β Galena, β Limonite, β Pyrite, β Sphalerite |
| Unionville Mine, Frederick County, Maryland, USA | β Wad |
| Maryland Green Marble Corporation Quarry (Cardiff Serpentine Quarry), Cardiff, Harford County, Maryland, USA | β Actinolite, β Antigorite, β Breunnerite, β Calcite, β Chalcedony, β Chalcopyrite, β Dolomite, β Magnesite, β Opal, β Opal-AN, β Picrolite, β Pyrite, β Quartz, β Talc, β Wad, β Williamsite |
| Hope Ore Bank, Harford County, Maryland, USA | β Goethite, β Hematite, β Quartz |
| Flintville area, Dublin, Jarretsville-Dublin Mining District, Harford County, Maryland, USA | β Ankerite, β Chlorite Group, β Garnierite, β Jasper, β Magnetite, β Picrolite, β Serpentine Subgroup, β Talc, β Vermiculite |
| Reed Mine, Jarretsville-Dublin Mining District, Harford County, Maryland, USA | β Antigorite, β Brucite, β Chalcedony, β Chromium-bearing Clinochlore, β Chrysotile, β Clinochlore, β Magnesite, β Picrolite, β Quartz, β Serpentine Subgroup, β Talc, β Williamsite |
| Broad Creek Mine, Whiteford, Jarretsville-Dublin Mining District, Harford County, Maryland, USA | β Chlorite Group, β Clinochlore, β Magnesite, β Ripidolite, β Talc |
| Wilkins Mine (Wilkens Mine; John W. Carman Property), Jarretsville-Dublin Mining District, Harford County, Maryland, USA | β Antigorite, β Chromite, β Chromium-bearing Clinochlore, β Clinochlore, β Picrolite, β Serpentine Subgroup, β Williamsite |
| Arlington No. 1 Quarry, Howard County, Maryland, USA | β Microcline, β Muscovite, β Plagioclase, β Quartz, β Schorl |
| Arlington No. 2 Quarry, Howard County, Maryland, USA | β Microcline, β Muscovite, β Plagioclase, β Quartz, β Schorl |
| Fagan Quarries, Howard County, Maryland, USA | β K Feldspar, β Muscovite, β Quartz, β Schorl |
| O'Connor Farm Quarries, Howard County, Maryland, USA | β K Feldspar, β Muscovite, β Quartz, β Schorl |
| Pindell Quarries No. 1, Howard County, Maryland, USA | β K Feldspar, β Magnetite, β Muscovite, β Quartz |
| Pindell Quarries No. 2, Howard County, Maryland, USA | β K Feldspar, β Magnetite, β Muscovite, β Quartz |
| Tunnel Feldspar Mine, Howard County, Maryland, USA | β K Feldspar, β Muscovite, β Pyrite |
| Woodstock, Howard County, Maryland, USA | β Garnet Group, β K Feldspar, β Quartz |
| Sawyer Mine, Cropley, Montgomery County, Maryland, USA | β Dolomite, β Gold, β Limonite, β Pyrite |
| Dickerson Trap Rock Quarries, Dickerson, Montgomery County, Maryland, USA | β Calcite, β Chabazite, β Epidote, β Garnet Group, β Hematite, β Laumontite, β Plagioclase, β Prehnite, β Stilbite Subgroup |
| Earth Products Company Mines, Montgomery County, Maryland, USA | β Albite, β Beryl, β Garnet Group, β K Feldspar, β Muscovite, β Schorl |
| Ford Mine, Potomac, Montgomery County, Maryland, USA | β Electrum, β Quartz, β Tetradymite |
| Maryland Mine (Allen shaft), Potomac, Montgomery County, Maryland, USA | β Chlorite Group |
| Montgomery Mine (Potomac Mine), Potomac, Montgomery County, Maryland, USA | β Galena, β Limonite, β Pyrite, β Quartz |
| Huddlestone Mine, Rockville, Montgomery County, Maryland, USA | β Talc |
| Fort Washington, Prince Georges County, Maryland, USA | β Gypsum |
| Crystal Grotto Caverns, Boonsboro, Washington County, Maryland, USA | β Aragonite |
| Weverton, Washington County, Maryland, USA | β Blue Quartz, β Quartz |
These are possibly similar items as determined by title/reference text matching only.
