https://bilvavi.net/sugya/chodesh.tamuz
Tammuz corresponds to the power of sight (this includes imagination).
It also corresponds to the Tribe of Reuven (or, according to the Vilna Gaon, the Tribe of Naftali).
The astrological mazal of Tammuz is Crab/Sartan/Cancer.
For other posts on Tammuz, please see:
links-to-help-deal-with-the-mazalastrological-influence-of-tammuz-av.html