hornblende andesite

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• Hornblende andesite porphyry — is an intermediate volcanic igneous rock. Like most porphyrys, it cooled at two separate rates, causing two sizes of crystals to be visible. Source: [http://osdir.com/ml/culture.stone/2006 02/msg00238.html] …   Wikipedia

• Andesīte — Andesīte, jüngere vulkanische Gesteine von porphyrartiger Struktur, bestehen aus einer in der Regel glasreichen Grundmasse und aus darin ausgeschiedenem Plagioklas (daneben zuweilen Sanidin), Hornblende und Augit, seltener Hypersthen und Glimmer …   Meyers Großes Konversations-Lexikon

• Andesite — Andésite Un échantillon d andésite (en noir) avec des inclusions de zéolite …   Wikipédia en Français

• Hornblende — Amphibole Hornblende General Category Igneous, metamorphic Chemical formula Ca2 …   Wikipedia

• Hornblende — Catégorie IX : silicates[1] Hornblende Général …   Wikipédia en Français

• Andesite — An des*ite, n. (Min.) An eruptive rock allied to trachyte, consisting essentially of a triclinic feldspar, with pyroxene, hornblende, or hypersthene. [1913 Webster] …   The Collaborative International Dictionary of English

• Hornblende-Andesit — Hornblende Andesit, Gestein, s. Andesite …   Meyers Großes Konversations-Lexikon

• andesite — [an′də zīt΄] n. [after ANDES (MOUNTAINS) + ITE1] a dark colored, fine grained, extrusive igneous rock consisting chiefly of plagioclase feldspars with some biotite, hornblende, or pyroxene …   English World dictionary

• Andesite — For the extinct cephalopod genus, see Andesites. Andesite (pronEng|ˈændəsaɪt) is an igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. The mineral assemblage is typically dominated by plagioclase plus… …   Wikipedia

• andesite — GLOSSARY OF VOLCANIC TERMS A grey to grey green colored volcanic rock containing 53% to 63% silica (compositionally between basalt and dacite). Minerals commonly found in andesite include intermediate composition plagioclase and hornblende. USGS… …   Glossary of volcanic terms

• andesite — andesitic /an deuh zit ik/, adj. /an deuh zuyt /, n. a dark colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite. [1840 50; named after ANDES; see ITE1] * * * Any member of a… …   Universalium