(see spessartine)

См. также в других словарях:

• spessartine — ▪ gem       manganese aluminum garnet that is a semiprecious gem when clear. Found combined with almandine, it ranges in colour from pale orange yellow, when nearly pure, to orange or deep red, when appreciable proportions of almandine are… …   Universalium

• spessartine — noun see spessartite …   New Collegiate Dictionary

• spessartine — noun see spessartite …   Useful english dictionary

• Garnet — For other uses, see Garnet (disambiguation). Garnet General Category Nesosilicate Chemical …   Wikipedia

• garnet — garnetlike, adj. /gahr nit/, n. 1. any of a group of hard, vitreous minerals, silicates of calcium, magnesium, iron, or manganese with aluminum or iron, varying in color: a deep red transparent variety is used as a gem and as an abrasive. 2. a… …   Universalium

• Garnet — /gahr nit/, n. Henry Highland, 1815 82, U.S. clergyman and abolitionist. * * * Any of a group of common silicate minerals with identical crystal structure but highly variable chemical composition. Garnets are most often found in metamorphic rocks …   Universalium

• Andradite — Andradite[1] Catégorie IX : silicates[2] …   Wikipédia en Français

• Pyrope — A gem quality, emerald cut pyrope. General Category Nesosilicate Chemical formula …   Wikipedia

• metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

• Beryl — Beril redirects here. For a character of Tolkien s legendarium, see Beril (House of Bëor). Heliodor redirects here. For the masculine name, see Heliodorus (disambiguation). For other uses, see Beryl (disambiguation). Beryl Three varieties of… …   Wikipedia

• Manganese nodule — Polymetallic nodules, also called manganese nodules, are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. The core may be microscopically small and is sometimes completely transformed… …   Wikipedia