Dawsonite is a mineral composed of sodiumSodium (IPA: ) is a chemical element which has the symbol Na (Latin: natrium), atomic number 11, atomic mass 22.9898 g/mol, oxidation number +1. Sodium is a soft, silvery white, highly reactive element and is a member of the alkali metals within "group 1" (formerly known as ‘group IA’). It has only one stable isotope, 23Na. Sodium was first isolated by Sir Humphry Davy in 1807 by passing an electric current through molten sodium hydroxide. Sodium quickly oxidizes in air ...sodium aluminiumNo quick definition available. aluminium carbonate:For other meanings, see Carbonate (other uses) In organic chemistry, a carbonate is a salt of carbonic acid.carbonate hydroxideNo quick definition available. hydroxide, chemical formula NaAlCO3(OH)2. It crystalizes in the orthorhombicIn crystallography, the orthorhombic crystal system is one of the 7 lattice point groups. Orthorhombic lattices result from stretching a cubic lattice along two of its lattice vectors by two different factors, resulting in a rectangular prism with a rectangular base (a by b, which is different from a) and height (c, which is different from a and b). All three bases intersect at 90° angles. The three lattice vectors remain mutually orthogonal. There are four orthorhombic Bravais lattices: simple orthorhombic, ...orthorhombic crystal systemA crystal system is a category of space groups, which characterize symmetry of structures in three dimensions with translational symmetry in three directions, having a discrete class of point groups. A major application is in crystallography, to categorize crystals, but by itself the topic is one of 3D Euclidean geometry. There are 7 crystal systems: *Triclinic, all cases not satisfying the requirements of any other system; thus there is no other symmetry than translational ...crystal system. It is not mined for ore. It was discovered in 1874Year 1874 (MDCCCLXXIV) was a common year starting on Thursday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Tuesday of the 12-day slower Julian calendar).1874 during the construction of the Redpath MuseumThe Redpath Museum is a museum of natural history belonging to McGill University located at 859 Sherbrooke Street West in Montreal, Quebec, Canada. It was built in 1882 as a gift from the sugar baron Peter Redpath. It is rumoured that it was part of an effort to ensure that Sir William Dawson would not leave the university. It houses collections of interest to ethnology, biology, paleontology, and mineralogy/geology. The collections ...Redpath Museum in a feldspathic dikeDikes often form as either radial or concentric swarms around plutonic intrusives or around volcanic necks or feeder vents in volcanic cones. These are known as "Ring Dike"s. Dikes can vary in texture and composition from diabase or basaltic to granitic or rhyolitic. Pegmatite dikes are extremely coarsely crystalline granitic rocks often associated with late stage granite intrusions or metamorphic segregations. Aplite dikes ...dike on the campus of McGill UniversityMcGill University is a publicly funded, co-educational research university located in the city of Montréal, Quebec, Canada. McGill's main campus is set upon 32 hectares (80 acres) at the foot of Mount Royal in Montreal's downtown district. A second campus—Macdonald Campus—is situated on 650 hectares (1,600 acres) of fields ...McGill University on the Island of MontrealThe Island of Montreal (in French, île de Montréal), in extreme southwestern Quebec, Canada, is located at the confluence of the Saint Lawrence and Ottawa Rivers. It is separated from Île Jésus (Laval) by the Rivière des Prairies. The island is boomerang-shaped (one end pointing roughly west, the other roughly north). ...Island of Montreal, CanadaCanada (IPA: /kæn.ə.də/) is the second largest country in the world by total area. Occupying most of northern North America, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean. Canada shares land borders with the United States to the south and northwest. The lands have been inhabited for millennia by aboriginal peoples. Beginning in the late 15th century, British and French expeditions explored and later ...Canada. It is named after geologistA geologist is a contributor to the science of geology, studying the physical structure and processes of the Earth and planets of the solar system (see planetary geology).geologist Sir John William DawsonSir John William Dawson, CMG, FRS, FRSC (October 13 1820 – November 19 1899), was a Canadian geologist, born in Pictou, Nova Scotia. Of Scottish descent, Dawson attended the University of Edinburgh to complete his education, and graduated in 1842, having gained ...John William Dawson.
The type material is preserved in the collection of the Redpath Museum.
