@madnige
John Varley's Gaea Trilogy Titan, Wizard, Demon -- MC (female) is a member of an exploratory expedition to one of Saturn's moons to investigate observational anomalies and which suffers a major mishap on arrival.
Varley has quite a few shorts with female MCs, I can recall and recommend Bagatelle, The Phantom of Kansas and The Barbie Murders, also Air Raid (which was expanded and filmed as Millenium)
The Varley books are a good choice for at least some sex content, definitely from the female POV.
Samuel R. Delany includes more sex in some of his, but I don't remember any of his female led stories being all that race.
Philip Josรฉ Farmer had some stories where the sex was pretty explicit (e.g A Feast Unknown)
For more of the fantasy side, with some sex but nothing too explicit, G.A. Aiken's Scarred Earth stories (starting with The Blacksmith Queen) have great, strong female leads.
Arizona Tape's Queens of Olympus stories do as well โ making the Greek gods' jobs just that, jobs, so you can have a female Zeus, Hades and Neptune (among others.) The gotcha here is that the stories are all lesbian romances, something I enjoy.
On this site, Les Lumens' The Fey Folk stories are short, fantasy pieces with female leads.
Ahaz's I Need to Remember is a fantasy romance that ends up with a female lead.
Brian in the Dark's Dizyntk Imperium stories are science fiction, are variously male and female POV, but the imperium is a matriarchy, so strong female characters abound. I like the concept, so I added a story to the universe.
Kenn Ghannon's Runesward is fantasy told from multiple points of view, some of which are female.