The spelling of sulphur is "sulfur" in the USA and now that IUPAC has decided it has jurisdiction over the British English language (as distinct from American English) as well as nomenclature, those in the UK are expected to use the f word.
Sulfur is found in meteorites, volcanoes, hot springs, and as galena, gypsum, Epsom salts, and barite. It is recovered commercially from "salt domes" along the Gulf Coast of the USA.
Jupiter's moon Io owes its colors to various forms of sulfur. A dark area near the crater Aristarchus on the moon may be a sulfur deposit.
Sulfur is a pale yellow, odorless, brittle solid, which is insoluble in water but soluble in carbon disulfide. Sulfur is essential to life. It is a minor constituent of fats, body fluids, and skeletal minerals.
Carbon disulfide, hydrogen sulfide, and sulfur dioxide should be handled extremely carefully. Hydrogen sulfide in very small concentrations can be metabolized, but in higher concentrations it can cause death quickly by respiratory paralysis. It is insidious in that it quickly deadens the sense of smell. Sulfur dioxide is a dangerous component in atmospheric air pollution and is one of the factors responsible for acid rain.
Source: http://www.webelements.com/