To compare as an anology some shapes. ...

To compare as an anology some shapes.

some types here share common ground with Merdiani.

such as the "starfish" shapes

Who's shape (who's) With shape changes with maturity.

mineral encrusted, with time.

i love this image.

i'm in trouble for spending to much time , reading on the manganese oxides today on the computer. time to face the music.

nice images you guys.

one more from me before i go.