Geography of Sheffield county, from bituminous (ideal for domestic heating) to "Thick Coal", of a semi-anthracitic quality, appropriate for use in iron-smelting and in engine furnaces. Associated with the Upper Coal Measures were valuable iron ore deposits, occurring in the form of nodules. Large quantities of locally occurring fireclay were also exploited, as well as ganister (a clay used to make refractory furnace linings). The city of Sheffield derives its name from the River Sheaf which Until the 17th century was written as "Scheth" or "Sheath". Sidney Oldall Addy equates the origins of this word with the Old English "shed" (as in "water-shed")
English Creek (Spring River) in Oregon County at and the confluence with the Spring River in Fulton County is at . English Creek has the name of the local English family. English Creek (Spring River) English Creek is a stream in Oregon County of southern Missouri and Fulton County of northern Arkansas. It is a tributary of Spring River. The stream source area lies southeast of Koshkonong and it flows south past the east the east side of Grand Gulf State Park and under Missouri Route 142 southwest of Thayer. The stream enters Fulton County and passes under Arkansas Highway 9 west of Mammoth