LH pic: This piece was laying amongst unrelated rock formations.
My thoughts it may have been used as a cutting stone in dream time by our indigenous people. Fits perfectly between thumb and fore finger and is very sharp.
Middle pic: Unusual formation and detail, once again stood out amongst unrelated geology.
RH pic: This has very unusual formations looks almost man made but was once again laying face up in salt & pepper ground.The back side is perfectly flat. Easily spotted by wannabee tektite hunter (Still looking for first) while swinging detector.
I've seen quite a few of the cutting implements before in many locations, one spot was where they got them from and made them. Many many rejects of course.
The third rock (the one on the right) is very interesting isn't it?