rapakivi texture

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rapakivi texture [¦rä·pə′kē·vē ′teks·chər]

(petrology)

An igneous and metamorphic rock texture in which spherical potassium feldspar crystals are surrounded by a rim of sodium feldspar, both within a finer-grained matrix.

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No references found			RAPAKIVI GRANITES Rapakivi granites are defined as A-type granites characterized by the presence, at least in the larger batholiths, of granite varieties showing rapakivi texture (Haapala & Rama 1992). Surface weathering of rapakivi granite outcrops--implications for ... by Harma, Paavo; Selonen, Olavi / Estonian Journal of Earth Sciences Typical shallow-crustal granites with rapakivi texture are found in the central part (Bogatikov & Birkis 1973), while subvolcanic granophyres occupy large areas in its northern part--on the basement of Ruhnu Island in the Gulf of Riga and in the southwestern part of Saaremaa Island (Kuuspalu 1975; Puura et al. Anorogenic magmatic rocks in the Estonian crystalline basement/Eesti ... by Kirs, Juho; Haapala, Ilmari; Ramo, O. Tapani / Proceedings of the Estonian Academy of Sciences: Geology			ranula Ranunculaceae Ranunculales Ranunculus Ranvier, Gabriel ranz des vaches Rao, Chandra Rajeswar Rao, P. V. Narasimha Rao, Raja raob Raoul Raoul Blanchard Raoul Dufy Raoul Georges Adolphe Rigault Raoul Victor Patrice Castex Raoult's law Raoult's Laws Raoult, Francois Marie Raoult, François Marie rap rap music Rapa Nui rapacious Rapacki Rapakivi rapakivi texture Rapallo Rapallo, Treaty Rapallo, Treaty of Rapallo, Treaty of 1920 Rapana Rapant, Daniel Rape Rape Beetle Rape Oil rape-seed oil Rapha Raphael Raphael Holinshed Raphael Santi Raphael Soyer Raphall, Morris Jacob raphania Raphanus raphe Raphia Raphidae raphide Raphidioptera rapid rapid 3D printing			Rapa Rapa Rapa Rapa Nui Rapa Nui Rapa Nui and Sala-y-Gomez subtropical broadleaf forests Rapa Nui and Sala-y-Gomez subtropical broadleaf forests RAPAC RAPACE RAPACE Rapaces rapacious rapacious rapacious rapaciously rapaciously rapaciously rapaciousness rapaciousness rapaciousness rapacity rapacity rapacity Rapacki Rapacki Rapacki Plan RAPAD RAPADS Rapakivi Rapakivi granite rapakivi texture RAPAL Rapala Club Membership Kit Rapallo Rapallo Rapallo (GE) Rapallo (GE) Rapallo, Treaty Rapallo, Treaty of Rapallo, Treaty of 1920 RAPAM Rapamune Rapamycin Rapana Rapana Thomasiana Hemocyanin Rapant, Daniel Rapar Rapar Rapar Rapar Raparee Rapat Dengar Pendapat Umum Rapat Umum Pemegang Saham Rapat Umum Pemegang Saham Luar Biasa Rapateaceae rapax RAPB RAPBC RAPBD RAPC

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