Palagonite

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palagonite [pə′lag·ə‚nīt]

(geology)

A brown to yellow altered basaltic glass found as interstitial material or amygdules in pillow lavas.

Palagonite

a glassy mineral substance of yellow-brown, brownish green, or dark brown color, having a high water content and sometimes occurring in partially devitrified form. It is found in basalts and in diorites and their tuffs. Palagonite contains 13 to 23 percent water, 37 to 40 percent silica, and 12 to 21 percent iron oxides. The most common form of palagonite is found near the city of Palagonia (hence the name) in Sicily and also in Iceland, Franz Josef Land, the Bol’shezemel’skaia Tundra, and the Timan Ridge.

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No references found			Thus, suggest McEwen and his colleagues, a thick deposit of palagonite in the northeast corner of Cerberus appears to have created the entire 2,000-kilometer-long dark region. Map of Mars helps solve a dark mystery by Cowen, Ron / Science News			palaeography Palaeoisopus Palaeolithic Palaeologus Palaeomastodontinae Palaeomerycidae Palaeonemertini Palaeonisciformes Palaeoniscoidei palaeontology Palaeopantopoda Palaeopithecus Palaeopneustidae Palaeopterygii Palaeoryctidae Palaeospondyloidea Palaeotheriidae palaeotheriodont palaeotropical Palaeotropical Region Palaeozoic Palaestra Palafox y Melzi, Jose Rebolledo de Palafox y Melzi, José Rebolledo de Palafox, José de Palagonite palagonite tuff Palaikastro Paláikastro Palakus Palal palama Palamas, Costis Palamas, Kostes Palamas, Saint Gregory Palamedes Palamon and Arcite Palana Palanga palanquin Palas palasite Palata Rodoslovnykh Del Palata, Sudebnaia palatal index Palatalization Palate Palatinate palatine palatine bone palatine canal			Palaeotype Palaeozoic Palaeozoic Palæozoic Palæozoic Palaeozoic Era Palaeozoic Era palaeozoology palaeozoology Palaepharsalus Palaestina Palaestina Palæstina Palæstina palaestra palaestra Palæstra Palæstra palaestrae palaestras palaestras Palaestric Palaetiologist palaetiology Palaezoic Palaezoic Palafox y Melzi, Jose Rebolledo de Palafox y Melzi, José Rebolledo de Palafox, José de Palagi Palagonite Palagonite tuff Palaic Palaic Palaic language Palaikastro Paláikastro Palaimon Palaiologos Palais Palais Palais Brongniart palais de danse Palais De La Méditerranée Palais des Congrès de Montréal Palais des Tuileries Palais des Tuileries Palais du Luxembourg Palais Garnier palais glide Palais Luxembourg Palais Omnisports Paris Bercy Palakkad Palakus Palal Palama Palama Palamas, Costis Palamas, Kostes

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