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gortex
reply to post by Arken
Very interesting image a Arken S+F
Image two close up 3 appears almost like glass , perhaps crystal ?
The other bit and pieces are quite interesting .
Nacre (/ˈneɪkər/ NAY-kər),[1] also known as mother of pearl, is an organic-inorganic composite material produced by some molluscs as an inner shell layer; it is also what makes up the outer coating of pearls. It is strong, resilient, and iridescent.
Nacre is found in some of the more ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous, and this usually results in a non-iridescent shine, or more rarely in non-nacreous iridescence such as flame structure as is found in conch pearls.
The outer layer of pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre. Other mollusc families that have a nacreous inner shell layer include marine gastropods such as the Haliotidae, the Trochidae and the Turbinidae.
cosmicexplorer
reply to post by Arken
I read the title and before looking any further I thought "i bet this is arken". Enjoyable thread as usual....off topic...did you ever get past nasa's blocking? I lost the old thread.
CaptainBeno
Ahhhh Arken!
Again, another thought provoking post.
However, your new Avatar is way too cute.
Are you having a change of heart Arken??
jhn7537
Would Mars have fallen in the "Habitable Zone"? I've always wondered that because if it could have once been a Earth-like planet, you have to wonder what the seasons would have been like there. Extreme cold/heat or similar to Earth based off distance from sun?
ChesterJohn
reply to post by Arken
Some will see what they want. At this point it is like looking at ink blots each will see what they want. You will need to go to the exact spot and look first hand. Arm chair blurry photo interpretations are not very scientific.
The pictures are of harder minerals (rock) exposed by the erosion of the softer minerals (rock) caused by the Martian winds (not water).