Showing 3 items matching "cupellation"

Federation University Historical Collection
Magazine, Ballarat School of Mines Students' Magazine, Vol. 8, No. 2., Second Term, 1905, 1905

Grey soft covered magazine on 18 pages. Contents include: Wet Lead Assay, Swedish Iron, Cambridge Life, Arizona Mining Camp (photograph) , Adelaide School of Mines, Blast Furnace, Cupellation and Parting.ballarat school of mines, ballarat school of mines students' magazine, david ham, swedish iron, blast furnace, refining, commercial wet lead-assay, daniel walker, woolfram ores, mounty lyell ore deposits, cambrisge university, arizona copper mining camp, g.j. dawbarn, arizona, new mexico, clifton, adelaide school of mines, j.a. haslam, biggest blast furnace in the world, o.e. jager, anaconda copper mining co., cupellation, j.m. baldwin, kerr grant, w.j. lakeland, e.m. weston, r. lamb, h.b. cooke, p. mathews, g.s. hart, john rahilly, martin h. bade, hugo eklund, cupulation
Federation University Historical Collection
Book, Practical Metallurgy and Assaying: Practical Metallurgy and Assaying. A Text-Book for the Use of Teachers, Students and Assayers, 1902, 1902

Maroon hard covered book of 490 pages. Includes metallurgical analysis, assay, laaboratortm experiments, fuels, alloys, reduction, cupellation, arsenic, wet methods, amalgamation.metallurgy, brook, assay, silver, gold, sulphides, alloys, experiments, reagents, arthur h. hiorns
City of Greater Bendigo - Civic Collection
Equipment - Crucible, Bendigo Pottery

Assay is a process of metallurgy and chemical analysis used to determine proportions of precious metals in ores and other metallurgy substances such as silver or gold. The process helps identify pollutants present within a sample and can indicate a high level of pollution in a mining site. Stoneware crucibles are used in the fire assay process due to their ability to withstand high temperatures. Fire assay is a three step process where by samples from the mine are ground in a find powder and then mixed with dry powder chemicals. This mixture is heated in a crucible to extreme temperatures (crucible fusion) until all of the powers fuse into a glass like slag. Once this reaction is complete, the contents are poured into a mold and cooled. In step three (known as cupellation) the mixture is separated in a fire assay cupel and once this is complete the cupel with reveal a small bead of precious metals. Established by George Guthrie in 1857 (about 5km north of its current site) and then again seven years later in 1864 after it initially closed, Bendigo Pottery remains one of the most influential and longest running potteries in Australia. Over the years the Pottery has contributed to the growth and development of the district through both its products including building products, table ware and decorative and commemorative war as well as artistically, being responsible for training and supporting many potters locally. It has partnered with the City on various tourism promotions and the Civic Collection holds a number of important items within its collection.Two stoneware vessels of differing dimensions (0287.1 & .2). Unglazed and porous, showing extensive signs of use. Stamped and marked on the outside. 0287.2 has a shaped pouring lip. Six smaller items, coins, buttons (0287.3,.4,.5,.6,.7,.8) were found with the crucibles but their relationship to the assay items is unknown.0287.1; Large crucible; Bendigo Pottery / E. 0287.2; Small crucible: Pottery / C Icity of greater bendigo commerce, city of greater bendigo mining, making a nation exhibition