Hematite is an iron ore significant for its high iron content (70%) and as being one of the two main iron oxide minerals, the other being magnetite. Hematite has a rating of 5-6 on the Moh's hardness scale and is often found as an accessory mineral in many igneous rocks. (an accessory mineral being "any mineral in an igneous rock not essential to the naming of the rock" - Britannica) Hematite has historically been the mainstay of South Australia’s iron ore production. (Magnetite: South Australia’s potential) Making up the eastern section of the Gawler Rangers, the Middleback Range is a mountain range on the eastern side of Eyre Peninsula in South Australia that has been a source of iron ore (its main commodity in minerals) for over a century. (see https://www.mindat.org/loc-22576.html). "Large reserves of high-grade iron ore were identified in 1890 in the Middleback Range, west of Whyalla. From 1915 these ores were shipped to Newcastle and later to Port Kembla, both in New South Wales. Local production of pig iron began when the first blast furnace was opened at Whyalla in 1941, and construction of an integrated iron and steel plant began there in 1958." (Britannica, South Australia: Resources and power). This area is home to 24 mines/mineral deposits (according to mindat.org, thought the Sarig Map provided by SA gov on their Energy and Mining website indicates significantly more mining leases).This mineral specimen was collected from the Middleback Ranges before the area was identified as holding large reserves of iron ore and being commercially mined and is representative of South Australia's significant and ongoing history of iron ore mining, and its contribution to Australia's steel manufacturing industry of the early 20th century (this specimen being collected in the prelude to these events).A small ferric oxide mineral composition a mid-blue-grey in colour with specks of rust-brown throughout.HEMATITE / (iron oxide) / Locality: Middleback Ranges, S. Aust.middleback ranges, iron ore mining, mining, south australia

Pyrite also known as iron Pyrite or fools gold is an iron sulfide with a chemical formula of FeS2 and is the most abundant sulfide mineral. Its metallic luster and pale brass-yellow hue give it a superficial resemblance to gold for which its nickname of Fools Gold comes from. There are a number of iron pyrite mines in Victoria and many would have been mined during Victoria's Gold Rush revolution in the 19th century. As it's lustrius yellow metallic look closely resembles gold, it is likely that it was often mistaken for gold as real gold was also often found in similar metamorphic and sedimentary rock. 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 collections were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush). Collecting these specimens was an important part of Australia's early Geoplogical scientific discovery for mapping the earth's surface. It is unknown where in Victoria this specimen was mined from however; it shows strong provenance connections to Victoria's gold mining history and represents through larger economic and cultural structures the impact the Gold Rush had on Victoria during the 19th century. A solid coin-sized Pyrite crystal in black slate in shades of beige with tiny crystal structures. Pyrite / crystals / BB / in black slate / probably / victoria / (nice specimen)geology, geological specimen

Chert is a sedimentary rock composed of microcrystalline or cryptocrystalline quartz. While usually biological in origin, chert may also occur as a chemical precipitate or a diagenetic replacement--the product of petrified trees. Chert, also known as flint, was a common tool for early peoples during the stone age. It forms in limestone and chalk sediments as silicon dioxide microcrystals which grow into nodules of chert. Chert is found in many mines across the Northern Territory, however this specimen is sourced from the Mount Todd gold mine in Katherine. Its use in weaponry, both during the Stone Age and during the 18th century. Chert produces a spark when struck against steel, meaning t hat it can be used to start fires and fire guns. Chert was thus used in flintlock firearms, in which the gunpowder is ignited by a flint hammer striking a steel plate. Chert was commonly used in the Stone Age as a result of conchoidal fracturing causing very sharp edges, allowing early peoples to fashion weapons and cutting tools. It also rates a 7 on the Mohs Scale, making it a very hard and durable stone that maintains its sharpness. As a result, the significance of chert as a signifier of early indigenous Australian life makes this specimen important. It is also known that chert is a valuable mineral that was used as a trading commodity. Chert has also been valuable during the 1700s, proving itself to a be an important historical specimen in matters of war. A solid silicon dioxide mineral in shades of brown, white, and beigeburke museum, northern territory, chert, flint, minerals, geological specimen, katherine, mount todd gold mine, katherine northern territory

Arsenopyrite is one of the most common arsenic sulfide minerals, alongside orpiment and realgar. In its purest form, it becomes toxic as a result of a 46.0% arsenic makeup. Arsenopyrite occurs naturally in sulfide-bearing mineral deposits and is commonly found alongside gold deposits. This specimen was discovered in Maldon, Victoria, in the Maldon gold field. This mine is an important gold producer which was first mined in 1857. Between this initial date and 1926, 58 tonnes of gold was produced. The town of Maldon was designated Australia's first notable town, and has maintained its 19th-century appearance since the says of the gold rush. This mineral makes up a small part of the large amounts of minerals which has been excavated from the Maldon gold mines. The Maldon Goldfield alone has produced an excess of 1.7 million ounces of Australia's highest grade gold. This mineral represents not only the richness of the area, but also the significant impacts the gold rush had on the town.A solid iron arsenic sulfide mineral with shades of white, grey and blackburke museum, mineral, arsenopyrite, victoria, maldon, maldon victoria