minerallabreport

minerallabreport - GreggIrving EPS50 031807 MineralLab...

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Gregg Irving EPS 50 03-18-07 Mineral Lab Introduction: Studying the materials found on Earth can be beneficial to our understanding of the evolution of Earth as a planet and how the Earth’s environment changes. In this lab, we study a specific category of Earth material, called minerals, and how to distinguish them from each other. Methods / Procedure / Materials: To help identify which mineral is which, several tests were used. The first of which was a visual observation describing the color of the mineral. Then, using a scratch plate (a white tile-like material which, when rubbed on by a given mineral leaves a distinct residue, if at all), the streak of minerals could be determined. Next, hardness was tested using a kit containing all the minerals on Mohs hardness scale (a 1-10 scale) with which each mineral (best to use silicates, since they range in hardness from 1-8) was tested for hardness. After, a comparison of the different types of luster was given on a list in the lab packet and using covalently bonded minerals, which have the widest variety of luster. Then, performing the ‘heft’ test, which involves lifting each mineral to decide which is heavier, tested the mineral density (minerals composed of elements with high
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minerallabreport - GreggIrving EPS50 031807 MineralLab...

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