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Sphalerite from
Medford Quarry (Redland Genstar Quarry), Medford, Carroll Co., Maryland, USA

Classification
Species:Sphalerite
Colour:Orange
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
References
References:J. Wingard, personal observation 5/1/04
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Medford Quarry (Redland Genstar Quarry), Medford, Carroll Co., Maryland, USA
Nearest other occurrences of Sphalerite
13.6km (8.4 miles) A Patapsco mine (Finksburg Mine; Orchard Mine), Patapsco Mines, Finksburg, Sykesville, Carroll Co., Maryland, USA
15.2km (9.5 miles) B Cox Mines (Mountain View Mine), Frederick Co., Maryland, USA
15.6km (9.7 miles) C Mineral Hill Mine, Louisville, Carroll Co., Maryland, USA
17.7km (11.0 miles) D Eiler Prospect, Frederick Co., Maryland, USA
19.6km (12.2 miles) E Unionville Mine, Frederick Co., Maryland, USA
21.8km (13.6 miles) F Dolyhyde Mine (Dolly Hyde Mine), Libertytown, Frederick Co., Maryland, USA
26.8km (16.7 miles) G Farmers Cooperative Limestone Quarry, New London, Frederick Co., Maryland, USA
31.9km (19.8 miles) H H.T. Campbell Quarry (Campbell Quarry), Texas, Baltimore Co., Maryland, USA
33.4km (20.8 miles) I McMahon Quarry (Greensberg Quarry), Bare Hills, Baltimore Co., Maryland, USA
43.4km (27.0 miles) J Jones Falls Quarries, Baltimore City, Maryland, USA
47.7km (29.6 miles) K Medusa Cement Company Quarry, West York, York Co., Pennsylvania, USA
55.0km (34.2 miles) L Codorus Stone & Supply Co. Quarry, Emigsville, East Manchester Township, York Co., Pennsylvania, USA
63.8km (39.7 miles) M Billmeyer Quarry, Bainbridge, Conoy Township, Lancaster Co., Pennsylvania, USA
64.8km (40.3 miles) N County Line Quarry (Kline's Quarry), Wrightsville, York Co., Pennsylvania, USA
66.6km (41.4 miles) O Maryland Mine (Allen shaft), Potomac, Montgomery Co., Maryland, USA
71.0km (44.1 miles) P New Goose Creek Quarry (Luck Company Quarry), Leesburg, Loudoun Co., Virginia, USA
71.0km (44.1 miles) Q Old Goose Creek Quarry (Arlington Stone Company Quarry; Belmont Quarry), Leesburg, Loudoun Co., Virginia, USA
71.4km (44.4 miles) R Reeser's Summit, Frogtown, York Co., Pennsylvania, USA
72.2km (44.9 miles) S Pequea Silver Mine, Conestoga, Pequea Township, Lancaster Co., Pennsylvania, USA
77.7km (48.3 miles) T Bamford, East Hempfield Township, Lancaster Co., Pennsylvania, USA
79.5km (49.4 miles) U Howell zinc prospect, Charles Town, Jefferson Co., West Virginia, USA
79.8km (49.6 miles) V Unnamed PGE Occurrence (MRDS - 10048644), Loudoun Co., Virginia, USA
81.4km (50.6 miles) W Binkley-Ober Quarry, Manheim Township, Lancaster Co., Pennsylvania, USA
92.6km (57.6 miles) X Fairfax quarry (Centreville Quarry; Sisslers Quarry), Centreville, Culpeper Basin, Fairfax Co., Virginia, USA
93.1km (57.9 miles) Y Cornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon Co., Pennsylvania, USA
99.3km (61.7 miles) Z Manassas Quarry, Manassas, Prince William Co., Virginia, USA
104.6km (65.0 miles) 0 Martin Limestone Quarry (Kurtz Quarry), Denver, East Cocalico Township, Lancaster Co., Pennsylvania, USA
114.3km (71.0 miles) 1 Cabin Branch Mine (Dumfries Mine), Dumfries, Gold-Pyrite Belt, Prince William Co., Virginia, USA
118.2km (73.4 miles) 2 Silver Mine Knob prospect, Union Township, Hares Valley Area, Huntingdon Co., Pennsylvania, USA
120.5km (74.9 miles) 3 Susquehanna Quarry, East Salem, Juniata Co., Pennsylvania, USA
121.0km (75.2 miles) 4 1300-foot Quarry, Union Township, Hares Valley area, Huntingdon Co., Pennsylvania, USA
121.6km (75.5 miles) 5 Motel 22 occurrence, Brady Township, Hares Valley area, Huntingdon Co., Pennsylvania, USA
126.1km (78.3 miles) 6 Middletown Quarry (Flintkote Company; Div. of M. J. Grove Lime Company), Frederick Co., Virginia, USA
129.2km (80.3 miles) 7 French Creek Mines, St. Peters, Warwick Township, Chester Co., Pennsylvania, USA
133.8km (83.1 miles) 8 National Limestone Quarry No. 1, Paxtonville, Middleburg Township, Snyder Co., Pennsylvania, USA
134.7km (83.7 miles) 9 Oley Valley Quarry (Oley Stone Quarry; Eastern Industries Quarry), Oley Township, Berks Co., Pennsylvania, USA
Mineral and/or Locality  
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