This specimen was recovered from Philip Island in Victoria. Chalcedony is composed of Quartz and Silicon Dioxide represented as SIO2. It has and is still used as a gemstone for thousands of years. This is an excellent specimen Chalcedony that shows its aesthetic properties. 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. Uniquely shaped piece of Chalcedony with opening in the centerburke museum, beechworth, geological, geological specimen

Although it is not known where these specimens were collected, Victoria and other regions of Australia were surveyed for sites of potential mineral wealth throughout the 19th Century. The identification of sites containing valuable commodities such as gold, iron ore and gemstones in a locality had the potential to shape the development and history of communities and industries in the area. The discovery of gold in Victoria, for instance, had a significant influence on the development of the area now known as 'the goldfields', including Beechworth; the city of Melbourne and Victoria as a whole. Agate occurs when amygdales (gas pockets) form in the upper levels of basaltic lava flows. If these pockets or bubbles are iniltrated by water bearing silica in solution, the fluid dries and hardens in layers, forming round or egg shaped nodules or geodes within the rocky matrix. Agate is formed of a silica mineral chalcedony similar to quartz. The term carnelian primarily refers to the reddish shading of the stone; whether the stone is termed an agate or chalcedony type is often influenced by the degree of colour banding the specimen shows. The specimens are significant as examples of surveying activity undertaken to assess and direct the development of the mineral resource industries in Victoria and Australia, as well as the movement to expand human knowledge of earth sciences such as mineralogy and geology in the nineteenth century.Three small geological specimens that appear visually consistent with images of rough or unpolished Carnelian Agate or Chalcedony. geological specimen, geology, geology collection, burke museum, beechworth, indigo shire, north-east victoria, gemstones, agate, carnelian

Agate occurs when amygdales (gas pockets) form in the upper levels of basaltic lava flows. If these pockets or bubbles are iniltrated by water bearing silica in solution, the fluid dries and hardens in layers, forming round or egg shaped nodules or geodes within the rocky matrix. Agate is formed of a silica mineral chalcedony similar to quartz. Although relatively common and semi-precious, agate has been prized since at least 1450 BC - an intricately carved agate seal was found in the 2015 excavation of a grave belonging to a Mycenaeum priest or warrior near Pylos in Greece. Agate is also used in jewellery and other decorative or ritual purposes due to its often striking appearance. These specimens originated in North Queensland, which contains noted agate-fossicking regions such as in the area surrounding Forsayth. They were collected in approximately 1852 as an adjunct to the Geological Survey of Victoria. It was donated to the Museum in 1868. Victoria and other regions of Australia were surveyed for sites of potential mineral wealth throughout the 19th Century. The identification of sites containing valuable commodities such as gold, iron ore and gemstones in a locality had the potential to shape the development and history of communities and industries in the area. The discovery of gold in Victoria, for instance, had a significant influence on the development of the area now known as 'the goldfields', including Beechworth; the city of Melbourne and Victoria as a whole. The specimens are significant as examples of surveying activity undertaken to assess and direct the development of the mineral resource industries in Victoria and Australia, as well as the movement to expand human knowledge of earth sciences such as mineralogy and geology in the nineteenth century. Two solid egg-sized pieces of peach/orange toned agate (a common semi-precious chalcedony, similar to quartz) with a striped pattern, embedded in a light and dark brown matrix. geological specimen, geology, geology collection, burke museum, beechworth, agate, north queensland agate, 1852 geological survey of victoria, l. hufer - donor, mineralogy, agate specimen, indigo shire

Thunderegg Agates are formed within rhyolite volcanic ash layers. They are rough spherical shapes, varying in size from less than an inch to over a metre long. Thundereggs usually contain centres of chalcedony which may have been fractured followed by deposition of agate, jasper or opal, either uniquely or in combination. A unique characteristic that these specimens have is the fact that they often look like ordinary rocks on the outside, but slicing them in half and polishing them may reveal intricate patterns and colours. These particular specimens are examples of thunderegg agates. Agate is a variety of chalcedony, a cryptocrystalline form of quartz. The agate component contributes to the intriguing internal patterns of the specimens. The specific locality of these specimens is unknown but they can be found in flows of rhyolite lava. They are formed in gas pockets in the lava, which act as moulds. These specimens can be found globally, with specific locations in Germany being particularly abundant. 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 small solid specimens with pale, sandy-coloured exteriors and fractured internal patterns. burke museum, beechworth, geological, geological specimen, thundereggs, thundereggs agate, agate, rhyolite, rhyolite lava, volcanic ash, chalcedony, cryptocrystalline

This rock was found at Buchan. Inspected by George Rawlings 6.2.2013.A lump of reddish brown rock with crustaceans in a lighter colour. They are gastropod turritella. The rock is Jasper, a form of chalcedony ( an impure variety of silica).fossils jasper gastropod-turitella

Agate occurs when amygdales (gas pockets) form in the upper levels of basaltic lava flows. If these pockets or bubbles are iniltrated by water bearing silica in solution, the fluid dries and hardens in layers, forming round or egg shaped nodules or geodes within the rocky matrix. Agate is formed of a silica mineral chalcedony similar to quartz. Although relatively common and semi-precious, agate has been prized since at least 1450 BC - an intricately carved agate seal was found in the 2015 excavation of a grave belonging to a Mycenaeum priest or warrior near Pylos in Greece. Agate is also used in jewellery and other decorative or ritual purposes due to its often striking appearance. Quartz is found all over Australia, including Beechworth in Victoria. It is formed in deep-seated igneous rocks and crystallized through hot aqueous solutions. It can have two forms; Microcrystalline quartz or Crystalline quartz. Microcrystalline quartz is a fine grain quartz where crystalline quartz is often a large crystal. The colour of quartz can vary. These specimens were collected in Victoria in the vicinity of the Burke Museum. Victoria and other regions of Australia were surveyed for sites of potential mineral wealth throughout the 19th Century. The identification of sites containing valuable commodities such as gold, iron ore and gemstones in a locality had the potential to shape the development and history of communities and industries in the area. The discovery of gold in Victoria, for instance, had a significant influence on the development of the area now known as 'the goldfields', including Beechworth; the city of Melbourne and Victoria as a whole.The specimens are significant as examples of surveying activity undertaken to assess and direct the development of the mineral resource industries in Victoria and Australia, as well as the movement to expand human knowledge of earth sciences such as mineralogy and geology in the nineteenth century.Geological specimens of Agate and Quartz respectively; the fist-sized piece of Agate has peach/coral colouring with grey concentric patterning and the smaller piece of quartz is a uniform yellow/orange shade. Existing label: Local pebbles / (agate and / quartz / (yellowish) / egg-shaped). / BB geological specimen, geology, geology collection, burke museum, beechworth, agate, quartz, north-east victoria, indigo shire, geological surveys

Bound volume of the Ballarat School of Mines Students' Magazine for 1907-1909. Articles include the location and pegging of a tramway Route, the transmission of Power by Rope Driving by A.E.C. Kerr, A visit to the Briseis Mine, and New Brothers' Home, Mining Engineers in Tasmania, Obituaries for David Ham and Matthew Lyndsay, Pioneer Mining at Leichhardt, Automatic Ore Feeders and Chacedony Park by J.H. Adams. Images include the Ballarat School of Mines Football Team and the Ballarat School of Mines Sports Committee. 1907 * Hubert Krause 1908 * The location and Pegging of a Tramway Route by Yamba * The Unity of things by John Brittain * The transmission of power by Rope Driving, by A.E.C. Kerr * A visit to the Briseis Mine, and New Brothers' Home (includes photographs) * Mining Engineers in Tasmania * Limericks Sluiced at Snake Valley * David Ham Obituary * Matthew Lyndsay Obituary * Some Bunsen Memories by Professor Alfred Mica Smith * Geological Camp to Daylesford * Practical Mathematics by Hubert F. Hall * Pioneer Mining - Leickhardt * Automatic Ore Feeders * A Unique Ore Deposit (Lucknow Goldfield, NSW) * A country Ramble * The Alkaline Titration for Zinc * Chalcedony Park, Arizona, United States of America by J.H. Adams * Notetaking at Lectures * Smelter Cost-Keeping by Oliver E. Jaeger * Benefits of Physical Culture * Mineral Tasmania and its Wonderful Resources by F.F. Bradford * A holiday Trip to Queensland * The Compression of Air as Applied to Mining * Machine V Hand Drilling * The mining in the Malay States * William Thomas Grownow Obituary (includes image) * Timbering Stopes (Includes images) * Trip to Melbourne * Two Problems of Alluvial Mining by Richard Hain * The Berry Leads (includes plan of mines) * Black Pudding Supper * Observations for Meridian * NOtes on Coking Plants (includes plan) * How Old is the Earth * Conglomerations * A Pat Formula * The making of a Suitable Muffle for General Assay Work * Reduction of Gold Chloride by Charcoal * Chemical Definitions * Old Boys (R.J. Allen, W.B. Blyth, F. Brinsden, Lindsay D. Cameron, George W. Cornwell, John M. Currie, C.M. Harris, T. Wighton-Hood, W. Lakeland, W.S. Macartney, Fred A. Marriott, Karl B. Moore, G.E. Sander, Sherb. H. Sheppard, Norman S. Stuckby, John Sutherland, Lewis A. Westcott, Walter White, O.C. Witherden, Gerald Young) 1909 * The Graduates Problem * An Interesting Nevada Cyanide Plant (Bamberger De Lamar Gold Mines) * Easter Geological Camp to Ingliston * New Methods for the Volumetric Estimation of Lead * William Charles Kernott Obituary * Mount Morgan Mine by G.W. Williams * Tin Dredging at Tingha, New South Wales * Notes on the Iodide estimation of Copper * Photograph of the Ballarat School of Mines Students' Association Committee * The Importance of Mine Ventilation to the Students by F. Howells * Life in Mining Camp * Wise Words to Mining School Students * Military Search Lights * Gleaning s on resistance * Ministerial Visit to the Ballarat School of Mines by the Hon. A.A. Billson, Minister of Education , accompanied by Frank Tate, Director of Education. * Picture Making in Photography Composition * Mountains of Fire * A Walking Engine - New Military Machine - Guns into Action - Caterpillar No. 1. (Tank) * Fireless Locomotives * Elmore Concentrating Process (includes plan of Elmore Concentrator) * Mount Pani Limited * Surveying for Irrigation * Weights and Measures * Carbon Monoxide * Joseph Francis Usher obituary * The Problem of the Metalliferous Veins * Ballarat School of Mines Ambulance Class * Treatment of Gold in a battery Without the Use of Copper Plates by E.C. Hurdsfield * Meteorites * Werribee Gorge * Dredging in the Ovens Valley * Electrical Chatter - Electrocution by an Imaginary Eye-Witness * The Electric Furnace in Iron Metallurgy ballarat school of mines, ballarat school of mines football team, football, sports, tramway, mining engineers, david ham, matthew lyndsay, jack adams, berry lead, hepburn consuls, madame berry, west ristori, ristori no 1, allendale, dyke's co, charleson's mill, australian extended, mining, r.j. allen,, w.b. blyth, f. brinsden, lindsay d. cameron, george w. cornwell, john m. currie, c.m. harris, t. wighton-hood, w. lakeland, w.s. macartney, fred a. marriott, karl b. moore, g.e. sander, sherb. h. sheppard, norman s. stuckby, john sutherland, lewis a. westcott, walter white, o.c. witherden, gerald young, ballarat school of mines students' association, hubert krause, krause, vfl, afl