- prehnite
- (prè-ni-t') s. f.Substance cristalline composée principalement de silice, d'alumine et de chaux, rapportée du cap de Bonne-Espérance par le colonel Prehn.
Dictionnaire de la Langue Française d'Émile Littré. d'Émile Littré. 1872-1877.
prehnite
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Prehnite — Catégorie IX : silicates[1] Prehnite La Combe de la Selle, France 7,8 … Wikipédia en Français
PREHNITE — La prehnite cristallise dans le système orthorhombique. Les cristaux aux formes nettes sont rares, ils se présentent sous la forme de tablettes ou de bâtonnets courts. Il existe plusieurs variétés du minéral: la prehnite crêtée formée de lamelles … Encyclopédie Universelle
Prehnite — is a phyllosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Limited Fe3+ substitutes for aluminium in the structure. Prehnite crystallizes in the orthorhombic crystal system. It is brittle with an uneven fracture and a… … Wikipedia
Prehnite — Prehn ite, n. [So called from the German Colonel Prehn, who first found it.] (Min.) A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It is a hydrous silicate of … The Collaborative International Dictionary of English
prehnite — /pray nuyt, pren uyt/, n. a mineral, hydrous calcium aluminum silicate, Ca2Al2Si3O10(OH)2, occurring in light green reniform aggregates or tabular crystals. [1785 95; named after Col. Van Prehn, 18th century Dutchman who brought it from South… … Universalium
prehnite — prenitas statusas T sritis chemija apibrėžtis Mineralas. formulė Ca₂Al[(OH)₂|AlSi₃O₁₀] atitikmenys: angl. prehnite rus. пренит … Chemijos terminų aiškinamasis žodynas
Prehnite-pumpellyite facies — The prehnite pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies… … Wikipedia
prehnite — noun A mineral, a basic calcium, aluminium and iron aluminosilicate, which occurs in stalagtitic aggregates or curved crystals, CaAlSiO(OH) … Wiktionary
prehnite — preh·nì·te s.f. TS mineral. minerale raro, di colore biancastro, grigio o verdognolo, costituito da silicato di alluminio e calcio, che si presenta in cristalli riuniti in ammassi e cristallizza nel sistema rombico {{line}} {{/line}} DATA: 1819.… … Dizionario italiano
prehnite — prehn·ite … English syllables
