# syenite

> deep igneous rocks made of alkali feldspar and acidic / intermediate plagioclase, the most common minor constituents are hornblende, biotite, muscovite and accessory are zircon, apatite, sfen; volcanic equivalent: trachyte.

**Wikidata**: [Q329118](https://www.wikidata.org/wiki/Q329118)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Syenite)  
**Source**: https://4ort.xyz/entity/syenite


## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. Quora
4. [archINFORM](https://www.archinform.net/service/wd_aistich.php)
5. National Library of Israel Names and Subjects Authority File