Text-Book of Systematic Mineralogy (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Text-Book of Systematic Mineralogy

Upon similar utilitarian considerations a mixed system of notation has been adopted in the crystallographic part, the forms being designated in the text by their symbols according to Naumann, while the notation of their faces is by indices on Miller's system. As a matter of personal preference, the latter System would have been adopted exclusively but, having regard to the fact that the former is used much more extensively than any other system, both in text-books and in original memoirs, familiarity with its use is very desirable to students.

In the hexagonal system, the bravais-miller notation by indices on four axes has been adopted, as showing most clearly the relation between it and the tetragonal system.

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