Kaolin is also known as china clay. This specimen came from Dunolly, Victoria and was donated to the Museum in 1868 as part of the Geological Survey of Victoria. This survey helped map and study the geology of Victoria. In Victoria, Kaolin is particularly used as a filler and coating material in paper manufacture. It can also be used in paints, ceramics, rubbers and plastics. There are many kaolin deposits in Victoria but many of these have been mined out and there is not much Kaolin left. Rocks that have a high amount of Kaolinite and it can be formed through the decomposition of other materials. There are two types of Kaolin; hard and soft kaolin. Soft kaolin's are coarse but have a soapy texture. It can also break easily. The hard kaolins have an earthly texture and are finer grained. This means that they are harder to break, unlike the soft kaolin. Hard kaolin's are formed by flocculation in salt water, a process that in basic terms, bonds particles together. Kaolin is a common material in Victoria and that is why it is significant. While this specimen was mined in Dunolly, Victoria Kaolin can also be found Pittong, Pakenham, Bulla, Hallam and Ballarat as well as many other places throughout Victoria. This specimen represents the presence of Kaolin deposits in this region of Australia. It is also significant because Kaolin has many uses and is largely beneficial to many manufacturing processes in Victoria. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study.Two pieces of Kaolinite mineral with shades of white and graygeological specimen, geology, geology collection, burke museum, beechworth, kaolin, china clay, dunolly, geological survey of victoria, kaolinite, victoria, mining, mining deposits, geology of victoria, australia, filler, coating material, paper manufacture, paint, ceramics, rubbers, plastics, decomposition, materials, soft kaolin, hard kaolin, flocculation, particles, salt water

Grey soft covered book with red tape spine. The 76 pages clay deposits, composition of Victorian clays, clay localities, granitic clays, Residual Clays, Clay-Shales, Jurassic clay shales.r a keble, senior field geologist, j c watson, chief chemist, d e watson, chief government geologist, g c moss, minister of mines, mallee plains, avoca valley, loddon valley, campaspe valley, goulburn valley, kiewa, mitta, glenelg valley, pitfield valley, otway area, moorabool valley, darley fireclay, campbellfield clay, latrobe river valley, hendley, ball clays, felspars, pegmatities, quartz, pakenham fireclay, bulla china clay, kaolin, terracotta, stoneware, ballan dyke-belt, egerton, gordon, ballan, llandeilo, colbrook, elaine, lal lal, maryborough, ballarat, ringwood, siliceous clay, stawell, dromana, ptways, bulla, pyalong china clay, linton china clay, wedderburn clays, lal lal china clays, ballan dyke belt, reginald callister, knight's koalin pottery, china clay, ferdinand krause, clarendon, bittern, frichot, hunt's dam, vaughan, rosenow, hickey, malone, claypits, ballarat dyke belt, stawell dyke belt, maryborough dyke belt, guildford, daylesford, ovens valley