  Extra-terrestrial polymers of glycine with iron have been characterized by
mass spectrometry to have a core mass of 1494Da with dominant rod-like variants
at m/z 1567 and m/z 1639 [1]. Several principal macro-structural morphologies
are observed in solvent extracts from CV3 class meteoritic material. The first
is an extended sheet of linked triskelia containing the 1494Da core entity that
encloses gas bubbles in the solvent [1]. A second is of fiber-like crystals
found here, via X-ray diffraction, to be multiple-walled nanotubes made from a
square lattice of the 1494Da polymer. A third is a dispersion of floating
phantom-like short tubes of up to 100micron length [1] with characteristic
angled bends that suggest the influence of a specific underlying protein
structure. Here it is proposed that the angled tubes are the observable result
of a space-filling super-polymerization of 1638Da polymer subunits guided by
the tetragonal symmetry of linking silicon bonds. Distorted hexagonal sheets
are linked by perpendicular subunits in a three-dimensional hexagonal diamond
structure to fill the largest possible volume. This extended very low-density
structure is conjectured to have dominated in a process of chemical selection
because it captured a maximum amount of molecular raw material in the ultra-low
density of molecular clouds or of the proto-solar nebula. This could have led
ultimately to the accretion of the earliest planetary bodies.
