This is similar to CU’s Chaos Star, Wheel of Fate (not casinos) or Symbol of Chaos.
|✳||Eight spoked asterisk. It is a symbol of revival and is similar to the Greek word “XI” (the capital letter of the word Christ). The Cross of the eight-point cross-stone ceremony (U+2733)|
|❊||Six Teardrop-Spoked Propeller Asterisk (U+274A)|
|❋||Heavy Eight Teardrop-Spoked Propeller Asterisk (U+274B)|
|Sail or boat steering wheel (none unicode)|
|☸||Wheel of the Dharma or Wheel of Law / Buddhism Dharma Chakra (U+2638)|
|And finally Michael Moorcock‘s Symbol of Chaos (none unicode)|
But here is nothing to do with Cirith Ungol, only similar.
There was a record label from 1957, similar to Cirith Ungol’s Chaos Star.
And also see others Chaos Star things – in another bands, t-shirts, warhammer, chaosphere, jewelery and so on.
Also see Logos.