| | Book | Shaub -y Treasures from the earth PUBLIC LIBRARY COUNTY, FORT WAYNE AND ALLEN IND. Treasures from...based on such readily apparent features as color, crystal shape, luster, and specific gravity. Sections of...minerals and gems, others to a study of various rock types and the kinds of minerals and gemstones that...of a mineral is easier to determine if its host rock is known. There are many ways in which the beginning...minerals, and how these arrangements are related to crystal growth, properties, and exter- to in a fixed |
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