Elementary Geochemistry

Given the following diagrams, identify the rocks described below: Intrusive Extrusive 1. Phaneritic rock with 32% Quartz, 18% Muscovite, 15% Biotite, 28% Potassic Feldspars, 7% Plagioclase Feldspars 2. Aphanitic rock containing 5% Quartz, 20% Amphible, 15% Biotite, 35% Plagioclase Feldspars, 10% Potassium Feldspars,15% Muscovite

What is Geochemistry? Geochemistry is the study of the distribution of elements on and within the Earth, its atmosphere and hydrosphere, and other planets. It involves the chemical and physical processes and reactions that the Earth as a system has undergone and is still undergoing, producing the dynamic equilibrium that we observe today. Victor Goldschmidt Modern Geochemistry started when Victor Goldschmidt classified the elements according to their affinities to Oxygen (Lithophiles), Sulphides (Chalcophiles), Iron (Siderophiles), or their tendency to form gases (Atmophiles). Goldschmidt’s Classification, in effect, determines the distribution of elements within the Earth system. Lithophiles are found on the crust as they have high tendency to bond with the silicate structure. Chalcophiles form sulphides that are denser than common rock-forming minerals; hence, these are depleted on the Earth’s crust. Siderophiles that form strong metallic bonds with iron are abundant in the co...

Elementary Geochemistry Course Outline 1 st Semester SY 2011-2012 Instructor:  Joe P. Sunga Summary: This course will focus on the chemical and physical processes involved in rock formation. It will also, in part, deal with understanding geological processes, including ore deposition. Applications of geochemistry will also be discussed towards the end of the course. Topics: I.                     Introduction                                 The Rock Cycle Thermodynamics                                 Zeroth Law             ...