Lab 2: MINERALS, ROCKS, AND FOSSILSThe purpose of this week's lab is to learn how to identify rocks in preparation for later . forming minerals are: quartz, calcite, dolomite, k-feldspar, plagioclase feldspar, . is a useful property as long as tests are made by scratching (rather than crushing) . The diagram on igneous rocks below should be particularly helpful in.orthoclase crusher diagram rock,Granite - WikipediaGranite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or gray in color,.Biotite Granite - Geology Superstore. in a variety of sizes. An ideal sample for education use or for rock collectors and amateur geologists. . Biotite Muscovite Granite. Excl. Tax: £1.00 Incl. Tax: £.
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