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Crystal Habits of Minerals - Руслан Костов

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ЦЕНА: БЕЗПЛАТНА
ФОРМАТ: PDF EPUB MOBI DOC
ДАТА: 2001
РАЗМЕР: 3,12
ISBN: 954-642-060-3
ЕЗИК: БЪЛГАРСКИ
АВТОР: Руслан Костов

Описание:

...l's internal crystal system can be hidden or disguised ... 《Crystal Habits of Minerals》| Иван Костов, Руслан Костов ... ... . The term crystal habit describes the favored growth pattern of the crystals of a mineral species, Adjectives used to describe the habit of individual crystals are 'equant,' 'prismatic,' and 'tabular.' Aggregates of crystals may also be termed equant or prismatic, while aggregates of thin, flat, tabular crystals may be 'bladed.' Thin sheets, flakes or scales are termed 'foliated,' 'micaceous ... In crystallography, mineral habits refer to the wa ... Crystal Habits and Forms of Minerals and Gems ... ... In crystallography, mineral habits refer to the way crystals form within a specific mineral. In the article, "How Gems Are Classified," I mentioned that, at the molecular level, diamond looks like two pyramids attached at their bases and quartz has six sides. These are examples of mineral habits or crystal systems. Table of Contents: Habits are the distinctive form that mineral crystals may take in different geologic settings. It refers to the differences in form when they grow in a free space compared to growing in a particular environment, for example. This feature is not available right now. Please try again later. Habit is the general appearance a mineral tends to have - whether it is found as blocky crystals, long slender ones, or aggregates of some type, etc. If the crystals are glassy but cubic in shape you know they aren't quartz. If they are rounded like a soccer ball you know they aren't tourmaline. Mineral - Mineral - Crystal habit and crystal aggregation: The external shape (habit) of well-developed crystals can be visually studied and classified according to the various crystal systems that span the 32 crystal classes. The majority of crystal occurrences, however, are not part of well-formed single crystals but are found as crystals grown together in aggregates. Crystal growth by accretion of clusters and/or submicroscopic crystallites under specific natural environments is also discussed. The examples used illustrate crystallization and variation in the crystal habits of minerals in magmatic, pegmatitic, hydrothermal, weathering, sedimentary and metamorphic environments. Academia.edu is a platform for academics to share research papers. Generally, the crystal habits of the "phantom" and host crystal are different and can be used for crystallogenetic interpretation...