- many different diorite consisting chiefly of feldspar.
- A phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar.
- A granular igneous stone composed very nearly solely of a soda-lime feldspar, often labradorite.
- In petrography, a granular or gneissoid igneous stone of eastern Canada, consisting mainly of this plagioclase feldspar, labradorite.
Sentence for "anorthosite"
- In the southwest the underlying bedrock…