Are these fossils?

[Cgs928]

Hello all,

I am still working on this very large project in the Lower Glen Rose Formation near Spring Branch, Texas. Are these marine fossils? Or are they minerals?

[ynot]

Mineral, the first picture shows some selenite, second looks like calcite.

[Ludwigia]

I'll go along with Tony.

[mikeymig]

Looks more like gypsum.