damourite
Mica Mi"ca, n. [L. mica crumb, grain, particle; cf. F. mica.] (Min.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called {isinglass}. Formerly called also {cat-silver}, and {glimmer}. [1913 Webster]

Note: The important species of the mica group are: {muscovite}, common or potash mica, pale brown or green, often silvery, including {damourite} (also called {hydromica} and {muscovy glass}); {biotite}, iron-magnesia mica, dark brown, green, or black; {lepidomelane}, iron, mica, black; {phlogopite}, magnesia mica, colorless, yellow, brown; {lepidolite}, lithia mica, rose-red, lilac. [1913 Webster] Mica (usually muscovite, also biotite) is an essential constituent of granite, gneiss, and mica slate; {biotite} is common in many eruptive rocks; {phlogopite} in crystalline limestone and serpentine. [1913 Webster]

{Mica diorite} (Min.), an eruptive rock allied to diorite but containing mica (biotite) instead of hornblende.

{Mica powder}, a kind of dynamite containing fine scales of mica.

{Mica schist}, {Mica slate} (Geol.), a schistose rock, consisting of mica and quartz with, usually, some feldspar. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Damourite — Dam our*ite (d[a^]m [oo^]*[imac]t), n. [Ater the French chemist Damour.] (Min.) A kind of Muscovite, or potash mica, containing water. [1913 Webster] …   The Collaborative International Dictionary of English

  • damourite — ● damourite nom féminin (de A. Damour, nom propre) Mica blanc appartenant au genre muscovite …   Encyclopédie Universelle

  • Damourite — Muscovite Muscovite Catégorie IX : silicates Muscovite (Musée de Prague) …   Wikipédia en Français

  • damourite — noun A kind of Muscovite, or potash mica, containing water …   Wiktionary

  • damourite — da·mour·ite …   English syllables

  • damourite — noun a variety of muscovite • Hypernyms: ↑muscovite …   Useful english dictionary

  • Muscovite — Catégorie IX : silicates[1] Muscovite; sud est de Minas Gerais, Brésil …   Wikipédia en Français

  • Alexis Damour — Pour les articles homonymes, voir Damour. Alexis Damour est un minéralogiste français né à Paris en 1808 mort dans cette même ville en 1902. Après une formation de droit il poursuit une carrière administrative notamment au ministère des affaire… …   Wikipédia en Français

  • damouritisation — ● damouritisation nom féminin Transformation des feldspaths en damourite. ● damouritisation (synonymes) nom féminin Transformation des feldspaths en damourite. Synonymes : séricitisation …   Encyclopédie Universelle

  • biotite — Mica Mi ca, n. [L. mica crumb, grain, particle; cf. F. mica.] (Min.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in… …   The Collaborative International Dictionary of English

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