Definition
Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
History
Origin
China, USA, Middle east
-
Discoverer
Unknown
Alexandre Brongniart and René Just Haüy
Etymology
From medieval Latin, talcum
From Greek trakhus rough’ or trakhutēs roughness
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock