ESS102H1 Midterm: Study notes for GLG206-ESS221 Lab Exam 1
Document Summary
Internal atomic structure arranged in a regular geometric pattern (excludes glass, for example) Mineral names: family: group of minerals related by composition. Eg. sulphides have "s" in formula: groups: minerals with similar atomic structure. Eg. quartz (sio2) group made up of sio4 tetrahedra linked together at their corners: species: eg. alpha-quartz is the low temp. member of the quartz mineral group, series: same structure but different composition. Olivine series is a continuous chemical variation between two species: solid. Mg2sio4 (forsterite) - fe2sio4 (fayalite: polymorph: same formula but different atomic structure. Alpha-quartz (low t), beta-quartz (high t), tridymite, cristobalite, coesite, stishovite: variety: same mineral but distinctive physical property. Physical properties of a mineral are the macroscopic expression of its internal makeup, specifically its crystal structure and chemical composition. Because these are characteristic for each mineral, different samples of the same mineral should display similar physical properties and these can be used to determine the identity of a mineral.
