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Harzburgito

Harzburgito
Rocha ígnea
Harzburgito
Harzburgito (Madagáscar).
Composição
Classe Ígneaplutónica
Série ígnea Ultramáfica
Composição essencial Olivina, ortopiroxenas
Características físicas
Cor Verde-escuro, cinzento-esverdeado.
Textura Grosseira
Diagrama de classificação para rochas ultramáficas plutónicas com base na percentagem de minerais em volume (classificação da União Internacional de Ciências Geológicas). A área verde representa a composição do peridotito do manto terrestre.

Harzburgito é uma rocha ígnea plutónica composta principalmente pelos minerais olivina e ortopiroxenas,[1] considerada uma rocha ultramáfica por apresentar volume de olivina entre 90 e 40% e não mais de 5% de clinopiroxenas.[1]

Referências

  1. a b Le Maitre, R.W. (ed). 2002. Igneous Rocks: A Classification and Glossary of Terms. pp. 21 y 72.


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Harzburgito
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