Definition
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
History
Origin
Strait of sicily
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Discoverer
Unknown
Alexandre Brongniart and René Just Haüy
Etymology
From Pantelleria, a volcanic island in the Strait of Sicily
From Greek trakhus rough’ or trakhutēs roughness
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock