Fossil and Petrology collections, New South Wales stratigraphy and paleontology in New South Wales. They are also a source of information for researchers throughout the world. This collection is identified as State Significant. As at 21 November 2000, the Petrology Collection has been assessed as State significance. It contains 70,000 rocks and thin section. It was started in the 1870's as two separate collections, one with 9,000 rocks and the other with 43000 thin sections. The Fossil and Petrology Collections were listed on the New South Wales State Heritage Register on 2 April 1999. Fossil and Petrology collections, New South Wales The Fossil and Petrology collections are
Pellets (petrology) majority of peloids as secondary allochems created by biological degradation or “micritization” of other primary carbonate grains, i.e., ooids, bioclasts, or pellets. Pellets (petrology) Pellets are small spherical to ovoid or rod-shaped grains that are common component of many limestones. They are typically 0.03 to 0.3 mm long and composed of carbonate mud (micrite). Their most common size is 0.04 to 0.08 mm. Pellets typically lack any internal structure and are remarkably uniform in size and shape in any single limestone sample. They consist either of aggregated carbonate mud, precipitated calcium carbonate, or a mixture of both. They either are