Layer Estimates:

Layer: Geologic Contacts (ID:3)
Count: 1259
Extent:

XMin: -6123637.8957
YMin: -1127391.8104
XMax: -3052670.215
YMax: 1084027.8316
Spatial Reference: PROJCS["Mercury_Beethoven",GEOGCS["Mercury_Old",DATUM["",SPHEROID["",2439000.0,0.0]],PRIMEM["Reference_Meridian",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],UNIT["Meter",1.0]]

Layer: Geologic Units (ID:4)
Count: 725
Extent:

XMin: -6123637.8957
YMin: -1127391.8104
XMax: -3052670.215
YMax: 1084027.8316
Spatial Reference: PROJCS["Mercury_Beethoven",GEOGCS["Mercury_Old",DATUM["",SPHEROID["",2439000.0,0.0]],PRIMEM["Reference_Meridian",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],UNIT["Meter",1.0]]