By Claudia Owen
Using graphs and straightforward calculations, this truly written lab handbook enhances the examine of earth technology or actual geology. attractive actions are designed that can assist you advance data-gathering abilities (e.g., mineral and rock identity) and data-analysis abilities. you are going to the best way to comprehend aerial and satellite tv for pc photographs; to understand the significance of stratigraphic columns, geologic sections, and seismic waves; and extra.
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Additional info for Earth Lab: Exploring the Earth Sciences
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9f on page 28. Notice that even though one sample of hematite is silvery gray, both samples have a reddish brown streak. Since the hardness of porcelain is about 7 on the Mohs scale, the streak of a mineral with a hardness greater than 6 cannot be easily determined and can be said to have no streak. Softer minerals should have streak, but keep in mind that it may be hard to see a white streak on a white streak plate. Make sure that you have powdered the mineral rather than the streak plate. Three cleavages not at 90° Four cleavages Broken Surfaces of Minerals The broken surfaces of a mineral often have characteristics that can help in mineral identification.
8; L = pearly in coarse varieties to dull when fine grained; Greasy feel. Soapstone is a compact and massive variety. 1) Mg OH sheet silicate * The abbreviations are CL ϭ cleavage, P ϭ parting, F ϭ fracture, L ϭ luster, S ϭ streak, D ϭ density (in g/cm3) or specific gravity (no units), ~ ϭ approximately. Properties that are especially diagnostic are shown in bold. 5). 5 that all the mineral classes ending with -ates contain oxygen, and those ending with -ides do not contain oxygen unless ox is part of the name.
40 Lab 2 Copyright 2011 Cengage Learning, Inc. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. indd 40 5/20/10 11:13:58 AM 15. 3. be too fine-grained for us to see the individual cleavage sheets. These minerals tend to be very soft. List two such sheet silicates that are commonly pale in color: ___________________ ___________________ Scavenger Hunt Silicate minerals of various structures make up the most common rock-forming minerals, but with the exception of quartz, feldspar, and kaolin, they are not commonly used as resources.
