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matching gold crucible
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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 -
Federation University Historical Collection
Booklet, The School of Mines Ballarat: A Statement of the Objects and Present Resources of the School, 1873, 1873
The Ballarat School of Mines was the first School of Mines in Australia and was established in 1870. 22 page booklet titles 'The Ballarat School of Mines: A Statement of the Objects and Resources of the School.' The book has a number of illustrations including the interior of the Ballarat School of Mines Laboratory, and the former Ballarat Circuit Court House. It includes a statement of the formation, progress, and present position of the School of Mines, Ballaarat. The image of the Ballarat School Mines Assay Room shows assay furnaces, crucibles, chimney, and teacher Joseph Flude on the far right. This room is now is a building known as the 'Old Chemistry Building'. Plan and elevation of the new Metallurgical Laboratory and Proposed Chemical Laboratory is depicted.On front cover "Recorded in M-A" "1873"ballarat school of mines, assay, courthouse, joseph flude, crucible, furnace, flude, warrington rogers, brough smyth, harrie wood, wood, james bickett, bickett, redmond barry, somerville learmonth, metallurgy, chemistry, laboratory, examinations, mining engineer, assayer, inorganic chemistry, underground managers, captains of shift, engieners, enginedrivers, louis balhausen, james campbell, l.s. christie, j.j. casey, alexander dempster, g. higinbotham, james martin, alexander millan, malcolm morrison, band of hope and albion, city of ballarat mining company, city of canterbury gold mining company, egerton mining company, el dorado gold mining company, golden reef gold mining company, happy valley company, hope quartz mining company, long tunnel gold mining company walhalla, hopewell quartz mining company, imperial quartz mining company, student numbers, fees, magdala quartz mining company stawell, mariners and sloane's quartz mining company, new north clunes company, park company, temperence quartz company, tookey quartz company new zealand, walhalla gold mining company, matthew seal, harrie woodmuseum, duke of cornwall claim, john lynch, robert m. sergeant, engineers, f.w. niven, william henry barnard, ballarat school of mines museum, museum, ballarat school of mines library, donations of specimens, mining -
Buninyong Visitor Information Centre
Coin - Coins, Set of Twenty Coins and small Objects attached to a Board
Variety of coins, tokens and objects collected by the original owner. Sources not known at this point.Rectangular white card with eleven coins and ten small objects attached, all labelled. Items attached are as follows: 096.1 Token from R. Parker ABT. 1854 096.2 Token, Thomas East, Melbourne 096.3 Token, T Butterworth and Company, Castlemaine 096.4 Coin, 1843 Shilling 096.5 Coin, 1845 Sixpence 096.6 Coin, 1843 Fourpence (Groat) 096.7 Coin, 1856 Threepence 096.8 Coin, 1877 Penny 096.9 Coin, Halfpenny 096.10 Coin, 1878 Halfpenny 096.11 Coin, 1826 Shilling 096.12 Coin, Item found at Union Jack Reserve, possibly a coin with an integrated hole. On either side of hole is marked 1/2. Requires identification. 096.13 Button, T&S Extra Quality button, metal 096.14 Button, Ceramic disc with 'K K..... Wien' marked upon it 096.15 Tiny Pot for melting Gold 096.16 to 096.18 Small unidentified ceramic crucibles? 096.19.2 Musket balls 096.20 Leaf patterned broochcoins, numismatics