mineralogy

Diccionari de gemmologia

"Aquest diccionari conté 1.302 termes de l’àmbit de la gemmologia, especialment els relacionats amb les espècies gemmològiques, les propietats físiques i les característiques cristal·lines de les gemmes, les inclusions i les talles. També s’hi inclouen els materials obtinguts al laboratori, els tractaments utilitzats per a la millora del color i de l’aspecte de les gemmes, els processos de la talla, les màquines i eines necessàries per a fer-la i els productes finals que en resulten, i els aparells de mesura i els complements utilitzats en les diferents tècniques analítiques.

"This dictionary contains 1302 terms in the field of gemology, especially those related species gemmològiques, physical properties and characteristics of crystalline gems, inclusions and sizes. Also includes materials obtained in laboratory treatments used to improve the color and appearance of the gems, carving processes, machines and tools necessary to do it and end products that result, and measuring devices and accessories used in various analytical techniques. Each article contains the names in Catalan, equivalents in Spanish, French, Italian, English and German, and definition.

Dana Classification

"The Dana System of Mineralogy was first published in 1837 by James Dwight Dana, a leading geologist of his time; it is in its eighth edition (1997 ed.). The Dana classification, assigns a four-part number to a mineral species. First is its class, based on important compositional groups; next, the type gives the ratio of cations to anions in the mineral; finally, the last two numbers group minerals by structural similarity with a given type or class."

SnowTerm Thesaurus

"The project purpose is to develop and maintain a reference structured terminology in the domain of the cryosphere environment. The identification of the potential sources of terminology was carried out with the assistance of experts of the Arabba Avalanche Centre. The result consists of a certain number of lists of terms, usually contained in glossaries where they are supplied with one or more definitions and scarcely organised within a structure. In certain cases they are clustered in thematic areas. The terms of these lists were selected according to their pertinence and relevance.

"The project purpose is to develop and maintain a reference structured terminology in the domain of the cryosphere environment. The identification of the potential sources of terminology was carried out with the assistance of experts of the Arabba Avalanche Centre. The result consists of a certain number of lists of terms, usually contained in glossaries where they are supplied with one or more definitions and scarcely organised within a structure. In certain cases they are clustered in thematic areas. The terms of these lists were selected according to their pertinence and relevance.

Mineral Lists

"Here are mineral lists (IMA approved mineral names and varieties names) sorted either alphabetically or arranged systematically. As every science, mineralogy is changing: new analysis often modify formulas and other datas; new minerals are discovered; others are discredited. So, consider these lists as dynamic and subject to change and error. Comments, corrections and additions are welcome. It follows Strunz classification schemes (Mineralogical Tables, VIIIth edition) and has been modified according to the systematic numbers published in the 'Lapis Mineralienverzeichnis'.

International Classification for Seasonal Snow on the Ground

"Since 1990 our collective knowledge of snow and the techniques we use to observe its characteristics have evolved. Thus, in 2003, the current classification (Colbeck et al., 1990) needed an update, but the users of the 1990 classification felt that corrections and additions should be kept to a minimum. Following the spirit of the previous editions, the Working Group on Snow Classification took care to again provide a concise document usable by user groups of quite different specialties: snow scientists, practitioners, scientists from other fields, as well as interested lay persons.