UT Arlington GEOL 2313 - Review of Mineral Properties (11 pages)

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Review of Mineral Properties



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Review of Mineral Properties

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Pages:
11
School:
University of Texas at Arlington
Course:
Geol 2313 - Minerals and Rocks

Unformatted text preview:

Lab 1 Review of Mineral Properties Mineralogy A mineral is a naturally occurring inorganic homogenous solid with a definite but sometimes slightly variable chemical composition and a highly structured atomic arrangement By analyzing the definition naturally occurring will distinguish between those materials that are synthetically produced in a laboratory and those that are created by natural processes All minerals are produced from various processes that are independent of living organisms and thus are inorganic A majority of minerals are formed from some type of molten material derived from organic life A homogenous solid refers to the mineral s consistency throughout its mass and is neither liquid nor gas Meaning that the mineral cannot be further subdivided into mineralogical components The final two parts of the definition are in reference to its chemical composition and structure Later in the course it will become obvious that minerals can have alternative element constituents as part of its chemical formula Generally these variations are slight and the mineral is able to maintain its identity The highly structured atomic arrangement refers to the atomic structure of the mineral This indicates that there is an ordered framework of atoms building the mineral And thus one comes to the subject of Mineralogy Mineralogy is the study minerals and their various properties and uses These aforementioned properties are the focus of this lab Physical Properties In the beginning when people of old began to study the importance of minerals from the earth they had to examine what could be observed and tested by using various physical properties Mechanical Properties Hardness The hardness of a mineral is its resistance to scratching or abrasion Every mineral can be tested for its hardness by either Moh s Hardness Scale or by a relative hardness scale Moh s Hardness Scale Hardness Mineral 1 talc 2 gypsum 3 calcite 4 flourite 5 apatite Hardness Mineral 6 felspar 7 quartz 8



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