Origin and structural character of hauyne(ss) in spinel dunite xenoliths from La Palma, Canary Islands
| Autor: | Wulff-Pedersen E. 1, Neumann E.R. 2, Burke E.A.J. 3, Vannucci R. 4, Bottazzi P. 4, Ottolini L. 4, Gjonnes J. 5, Hansen V. 5 |
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| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | The American mineralogist (Online) 85 (2000): 1397–1405. info:cnr-pdr/source/autori:Wulff-Pedersen E. 1; Neumann E.R. 2; Burke E.A.J. 3; Vannucci R. 4; Bottazzi P. 4; Ottolini L. 4; Gjonnes J. 5; Hansen V. 5;/titolo:Origin and structural character of hauyne(ss) in spinel dunite xenoliths from La Palma, Canary Islands/doi:/rivista:The American mineralogist (Online)/anno:2000/pagina_da:1397/pagina_a:1405/intervallo_pagine:1397–1405/volume:85 |
| Popis: | Two spinel dunite xenoliths (Fo(89.8-91.2) in olivine) from La Palma contain minor amounts ( directions are common, implying commensurate or incommensurate modulations along directions. Raman spectra show peaks typical of both lazurite and hauyne. It is concluded that the mineral has a structure intermediate between those of pure lazurite and pure hauyne, and it is here referred to as hauyne(ss). The hauyne(ss) occurs together with strongly nepheline-normative glass in thin veinlets ( |
| Databáze: | OpenAIRE |
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