Tin(II) sulfide Tin(II) sulfide Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite (α-SnS), a rare mineral. At elevated temperatures above 905K, SnS undergoes a second order phase transition to β-SnS (space group: cmcm, No. 63). in recent years, it has become evident that a new polymorph of SnS exist based upon the cubic crystal system, π-SnS (space group: P23, No. 198). Tin(II) sulfide can be prepared by reacting tin with sulfur, or tin(II) chloride with hydrogen sulfide. Tin(II) sulfide is a dark brown or black solid, insoluble in water, but
San Tin the area. The Man clan decided to settle in the area in the 15th century. They dried the marshes and gradually filled them with soil, turning them into 800 hectare of rice paddies. This is reflected by the name San Tin, which means "new field"s. The San Tin areas are divided into nine villages within the area most notable areas are Wing Ping Tsuen (), which is close to the Tai Fu Tai Mansion, and Fan Tin Tsuen (). The areas around San Tin are covered in wetlands hence their main products are cabbages (like Chinese cabbage or kai-lan) and