The Origin of Life again ...

[Chip (OP)]

Disclaimer: i don't know the authors below because it's better this way.

No life without iron and sulfur (love the "twisted part":  same structural shape as the double helix, i've heard from my schizo voices) ...

consider: https://www.nature.com/articles/ncomms6594

then throw in some microbes from meteorites smashing onto mudpools and reconsider:
https://www.academia.edu/37758770/Lifes_Missing_Link?fbclid=IwAR0nQBJe580oAfWBNOtM-i-dInYykGpiOQ9UEwaBZ-2pJoFawkIdoLe2Cuw

[Chip (OP)]

More influences on the sweet and interesting double-helix shapes ?

Rotating Earth, Earth's Magnetic Field, Eddy Current and Dynamic Braking

see http://www.intelligentdesigntheory.info/rotating_earth_magnetic_field_eddy_current_dynamic_braking.htm

and perhaps consider: Rare iron oxide could be combined with 2-D materials for electronic, spintronic devices

https://phys.org/news/2019-05-rare-iron-oxide-combined-d.html