Definition
Aplite is a fine-grained granite composed mainly of feldspar and quartz
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
History
Origin
Iran
-
Discoverer
Unknown
Alexandre Brongniart and René Just Haüy
Etymology
From German Aplit, from Greek haploos simple + -ite
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
Plutonic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock