Observations on terrestrial ureyite and ureyitic pyroxene

Observations on terrestrial ureyite and ureyitic pyroxene

Ureyitic clinopyroxene with up to 87 mol.% ureyite component (NaCrSi2O6) and showing reaction textures with chromite is found in jadeitites from Burma; from Mocchie, Susa, Italy; and in Mesoamerican artefacts from Mexico. Complete ureyite miscibility with jadeite and significant solid solution with...

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Veröffentlicht in:The American mineralogist 1987-02, Vol.72 (1-2), p.126-136
Hauptverfasser: Harlow, George E, Olds, E. Peter
Format: Artikel
Sprache:eng
Schlagworte:
Asia
Burma
California
Central America
chain silicates
clinopyroxene
crystal chemistry
electron probe data
Europe
Far East
Guatemala
igneous and metamorphic rocks
Italy
jadeite
jadeitite
metamorphic rocks
metasomatism
Mexico
mineral data
mineralogy
minerals
occurrence
P-T conditions
paragenesis
Petrology
phase equilibria
pyroxene group
silicates
solid solution
Southern Europe
United States
ureyite
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Zusammenfassung:Ureyitic clinopyroxene with up to 87 mol.% ureyite component (NaCrSi2O6) and showing reaction textures with chromite is found in jadeitites from Burma; from Mocchie, Susa, Italy; and in Mesoamerican artefacts from Mexico. Complete ureyite miscibility with jadeite and significant solid solution with omphacite are observed.
ISSN:0003-004X
1945-3027