8334.1 - Roughly oblong in shape mudstone with large woody plant fossil on one face, and small woody fragments on others.

8330.1 - Irregularly shaped mudstone showing prominent carbonised plant fragments, and on one face a large partial woody or leaf structure.

8329.1 - Irregular-but-angular mudstone displaying large and prominent carbonised woody fragment , including two that seem to be pieces of one stem.

8325.1 - Flattened mudstones, shaped like a square with one corner smoothly shaved away, and showing low-quality wood fossils

8327.1 - Mudstone concretion and shell, one piece of shell has fallen away, small. Both pieces show small, plant fragments

8308.1 - Flattened and overall rectangular; dark blue-grey layered mudstone with white veins of quartz showing multiple stages of secondary mineralisation.

8340.1 - Grey, triangular, mid-large, thin mudstone contains carbonised plant fossils, most prominently a small, partial, but well preserved frond.

8318.1 - Roughly rectangular mudstone with fragments of fossil wood and plant matter, notably large ovoid cross section through a piece of fossilised wood.

8352.1 - Irregularly-shaped mudstone with some waved faces, displaying partial leaf fossils, prominently a nearly-totally carbonised taeniopteris leaf on one face.

8343.1 - Irregularly shaped grey mudstone containing some carbonised plant fragments, but most prominently (most likely) secondary iron mineralisation pseudo fossils

8326.1 - Medium-to-small mudstone in roughly prismatic shape, displaying numerous small plant leaf fossils, and possibly a prominently rounded conerstion on one face.

8357.1 - Large piece of mudstone broken perpendicular to longest axis into two almost-exact-sized pieces; break bifurcates leaf fossils apparent on both largest faces.

8339.1 - Large, though thin almost rectangular mudstone containing numerous small fragments of carbonised plant matter (one large piece in particular) and some fossil leaves.

8345.1 - Large, roughly trapezoidal prism of mudstone, one large face showing several leaves (phyllopteroides?), opposite face showing one partial; leaf and what appears to be a piece of confer foliage- stem and leaves.

8332.1 - Flat, roughly rhomboid mudstone showing prominent partial fossil of spiny animal (most likely), possibly a polychaete worm. (still possible it is merely a plant fragment). Surface shows striations likely from working to uncover fossil.

This particular specimen was found in the Moorabool Slate quarries in Victoria. The Moorabool Slate quarries was established in the 1860’s by a company of Welshmen with a crew of six who purchased land by the riverside to mine for slate. Under the promise of adding to existing recourses the crew mined the slate which was used for paving and roofing. Slate is a fine-grained, low-grade metamorphic rock that is formed by the transformation of mudstone, shale or sometimes volcanic ash under low pressure and temperatures. It dark colour is due to carbonaceous material or to finely divided iron sulphide. It is believed that Evan Rowlands and Theophilus Williams of Ballarat were the first to discover the slate veins. Slate is a one of the most common natural stones in general use. Being used as paving, flooring, roofing and more. However, its history of being mined in Australia is not common as it is considered that the best places to mine slate is Spain and parts of the United Kingdom. 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.A somewhat rectangular foliated metamorphic rock composed of quartz, sericite and minerals from the chlorite group that make up the compounds of slate. The rock is dark grey almost black.Geological survey / R S / Loc Moorabool /Slate quarries / 1/4 sheet | 78 | Roofing Slate /burke museum, beechworth, geological, slate, metamorphic, slate (metamorphic), geological specimen, slate specimen, indigo shire

The low rolling hills of the Kimbolton countryside consist of ancient, hard and fractured Ordovician rock up to 65 million years old, which was originally deposited deep under the sea. Rocks mainly are sandstone, mudstone, black shale and quartz conglomerates. Marine fossils can be found in the area. Around seven million years ago a basalt flow buried the original bedrock along the along the Campaspe River. Ongoing weathering, wind and water movement over the following years has produced younger clay, sand, silt and gravel deposits throughout the area. Patches of White Hills Gravel are also found in the area. Another unique geological feature of this area is the Permian Glacial Pavement rocks north and south of Eppalock and glacial sediments (such as “Dunn’s Rock” and “Kellams Rock”). During the ice age (up to 280 million years ago) large glaciers moving over the countryside, scoured out sediments, pulverized bedrock, polished and cut grooves into bedrock in the direction of ice movement. When the ice melted boulders etc where left behind in areas of entirely different rock types, such as a 100 Tonne granite block known as ‘The Stranger’ near Derrinal. Dunn's Rock (Glaciated Pavement) Eppalock - Photos of the rock and a field group collecting date with Lake Eppalock (Knowsley) in the backgroundhistory, bendigo, dunn's rock eppalock, kimbolton forest, lake eppalock, gately collection

In Australia, precious opal is found in Cretaceous age sandstones and mudstones. These sedimentary rocks were deeply weathered and this weathering released silica into the groundwater.Australia is the only part of the world where opalised animal and plant fossils have been found. Opal artefacts several thousands of years old have been discovered in East Africa. As early as 250 BC the Romans prized opals, thought to have come from mines in Eastern Europe, the ancient world's main source of opals. There are many aboriginal dreamtime stories that feature opal. Australian opals discovered during the late 1800's found little favour with European markets but their commercial value increased in the 1900's and in 1932 Australia took over as the major producer of opals in the world and remains the largest producer to this day. Opal is found around the world (Brazil, Mexico, Honduras and the western US) however Australia produces 95% of the world's precious opal and it is our official national gemstone. Opal was first mined commercially at Listowel Downs in Queensland in 1875 and later at White Cliffs in NSW. Today, Coober Pedy (SA) is the main producer of white opal, though in recent years this field has expanded and all types of opals are found. Other centres in SA include Andamooka and Mintabe. Lightning Ridge (NSW) is renowned for black opal and formerly White Cliffs was a large producer of high quality opal. Boulder opals (opals in concretionary ironstone) are mined in Queensland from numerous localities in a zone extending from the Eulo and Cunnamulla district in the south and northwest for a distance of over 700 km to Kynuna in the north. The towns of Quilpie, Yowah and Winton are the main opal mining and wholesale centres. Opals are considered gemstones and have been used in jewellery for thousands of years.Throughout much of history, opals were actually believed to be good luck. The Romans thought that opals were one of the luckiest gemstones and a symbol of hope. In the Middle Ages, opals were believed to be bestowed with all the positive properties of coloured gemstones due to its rainbow-like play of colour. Finally, there is a superstition that you should not wear an opal unless it is your birthstone otherwise misfortune will befall you. This, of course, is far-fetched, but the notion could have been promoted in the late 19th and early 20th Centuries by diamond traders who were trying to increase sales of diamonds and deter people from buying opals. Possibly related to this is the thought that you should set opal jewellery with diamonds as their powers of good fortune will override any negativity held by the opal. The great majority of opal does not show play of colour and is called common opal or potch however this is not the case with a precious opal. Opal is a precious gemstone, like rubies, emeralds or diamonds. Opal is rare, and it is expensive to prospect and mine for.Silica is one of the most common minerals on the planet, but precious opal is very rare – far more rare than diamonds. Precious opal is rare because the natural processes that create it rarely occur.Most (at least 95%) of the opal found by miners is common opal without gem colour. In Australia we call it potch. It can be white, grey, black or amber coloured. Even when a miner finds gem-coloured opal, most of it can’t be cut into gemstones because it’s too thin, or sandy. 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.It is not known where this opal originated, except that it is probably from Victoria, as it has been recorded from many localities in the State. Common Opal is formed from silica-rich water circulating through rocks near the Earth’s surface. It consists of minute spheres of silica arranged in different ways. In common opal, the spheres are of different sizes and randomly arranged, unlike in precious opal where the spheres are of similar size and uniformly arranged in three dimensions. These differences account for common opal generally being translucent to opaque and without the play of colours, or opalescence, displayed by precious opal. Common opal is found in many localities and different geological environments throughout Australia and the world. Precious opal requires special conditions to form and is much less common. Australia produces most to the world’s precious opal. burke museum, beechworth, indigo shire, beechworth museum, geological, geological specimen, precious opal, opal, brazil, mexico, honduras, queensland, coober pedy, gemstones, jewellery, play-of-colour, light blue

The building at 94 Merri St is amongst the earliest buildings in Warrnambool. It was possibly constructed before 1854 and maybe as early as 1848. The original building consisted of four main rooms under a hip roof. The outer walls were masonry , apparently rubble The Heritage Council indcate that on the balance of probabilities this was the general store of Richard Osbourne and John Moffat Chisholm built in 1847-48.The building at 94 Merri Street had historical and architectural significance to the state of Victoria. It was a rare example of surviving, pre separation building with associated interest in its materials and components It is associated with Richard Osbourne who founded the Warrnambool Examiner(1851_1889) and the town’s first historian. Architecturally, the significance of the house lay in the hand -wrought timber framing. All the major timbers in this building had been hand sawn. The Gold rush of the 1850’s saw this process mechanised. A kitchen fireplace in the rear skillion included a large block of Merri Creek Mudstone, a combination of “tufa” and clay that was used in the Warrnambool District as an excellent substitute for fire bricks. The house was demolished in 2011 and items of significance were salvaged, this brick being one. While some bricks were imported, there is evidence that there were a number of brick burning businesses in operation around this time. However it is difficult to ascertain to which group this brick belongs. Red clay rectangular brick. Contains some small gravel like material, possibly ferrous buckshot, grey mortar remnants on side and diagonal crack along one side.warrnambool, 94 merri street, richard osbourne, john moffat chisholm, hand sawn timber, brick, building materials

8355.1 - Small, roughly "flattened tetrahedron"; one face shows 'polished' look of slip-surfaces; another face shows fragments of woody and (possibly) leafy matter.

8348.1 - Roughly triangle-sided prism in shape; pieces of fossil wood; one face seems to have slip-surfaces.