Subject
Mineralogy -- Texas Books
Best books
Roselle M. Girard
Texas Rocks and Minerals: An Amateur's Guide
"Texas Rocks and Minerals: An Amateur's Guide" by Roselle M. Girard is a scientific publication written in the mid-20th century. The guide serves as an introductory resource for amateur geologists and school children interested in understanding the diverse rocks and minerals found in Texas. It covers foundational topics about the Earth's crust, the formation and properties of various rocks and minerals, and practical advice for collecting and identifying specimens. The opening of the guide presents a general overview of the types of geological materials covered, including a description of the Earth’s outer crust, the classified branches of geology, and the essential distinction between rocks and minerals. Girard introduces readers to geological time concepts, geological maps, and the various formations of igneous, sedimentary, and metamorphic rocks, while also emphasizing the value of minerals and their components in everyday life. The text is structured to ensure clarity for those new to geology, making it accessible and informative, equipped with charts for identification and illustrations to aid in understanding the content.
Elbert A. King
Texas Gemstones
"Texas Gemstones" by Elbert A. King, Jr. is a scientific publication written in the early 1960s. This work is a detailed exploration of the properties, cutting, and polishing techniques of various gemstones found in Texas, highlighting both the scientific and practical aspects of gemology. It delves into the geological characteristics and rarity of gemstones, which contribute to their value and desirability. The opening of the volume presents a comprehensive introduction to gemstones, outlining the criteria that define their beauty, durability, and rarity. It emphasizes how these attributes impact the desirability of various minerals as gemstones. Additionally, it begins to discuss the properties of gemstones, including color, diaphaneity, and hardness, setting up a framework for understanding how these qualities influence the cutting and polishing processes described later in the book. This foundational information engages readers interested in both geology and jewelry making, showcasing Texas's hidden treasures in the realm of gemstones.
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