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
Experimental petrology are analyzed - qualities of interest include mineral assemblage (which minerals crystallized and how much), mineral chemistry, and liquid (the remainder of the synthetic magma base) composition. Equilibrium crystallization studies are those in which a starting liquid is cooled until fully crystalline. This is taken to be the "equilibrium state" of the composition under those particular P/T conditions. Criticisms of equilibrium crystallization include the observation that real-world systems are believed to rarely sit still during crystallization and thus would not be able to properly equilibrate. Fractional crystallization studies represent a fairly recent trend in experimental petrology, gaining popularity as a