Specimen V1872 is identified as #157.quartz-dolomite schist with sphalerite, chalcopyrite, chlorite and biotite [first sphalerite in dolomite]. The physical location is given as Old Sulfur Mine, Mineral, Louisa County. The location coordinates were not recorded and are represented here by the county centroid. The specimen is stored in the DGMR Repository Storage Cabinet number 2, Drawer number 20.