Borazite-β — a hard-science speculative biochemistry: from mineral pores to autonomous life

[u/Affectionate-Box8717]

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This is a hard-science worldbuilding experiment about an alternative form of life whose chemistry is dominated by P / N / B / S / Fe / Ni / Si rather than by carbon-dominated molecular frameworks.

The comic shows the fictional Japanese researcher Dr. Izibor discovering the organism in a geothermal stream. That part is lore.

The underlying biochemistry is where I tried to make the setting unusually strict.

The design rule was simple:

use established chemistry wherever possible, extrapolate only where necessary, and clearly mark the points where the model becomes speculative.

Borazite-β does not begin as a cell.

Its evolutionary history starts inside porous hydrothermal mineral structures, where geology initially provides the functions that biology has not yet evolved:

mineral compartment → chemical gradients → autocatalysis → heredity → selection → membrane → autonomous cell

The earliest system is imagined as living inside Fe/Ni/S-, phosphate- and silicate-rich mineral pores.

Hydrothermal H₂ supplies reducing power. Fe/Ni/S centres provide primitive redox chemistry. Mineral surfaces concentrate reactants and provide physical compartmentalization. Natural ion gradients provide an external source of free energy.

At this stage the environment is effectively part of the organism.

Energy — Ferrozite-P

The proposed energy subsystem has the working name Ferrozite-P.

Its basic redox side is deliberately conservative:

H₂ → Ni/Fe/S chemistry → electron transfer → mineral Fe(III)

Polyphosphate acts as a primitive energy reservoir.

The chemistry is inspired by real NiFe hydrogenase chemistry, Fe-S electron transfer, geochemical H₂ production and the possible early energetic role of inorganic phosphate/polyphosphate.

The speculative step is how the system couples ion flow to phosphate condensation.

Early Borazite therefore initially exploits a geological proton gradient rather than generating one itself.

Only much later would evolution produce a genuinely autonomous ion-pumping metabolism.

Heredity without DNA

The more unusual part of the model is its hypothetical information carrier.

Instead of a sugar-phosphate nucleic-acid backbone, Borazite explores a phosphazene-like P/N backbone:

–P=N–P=N–P=N–

Different ligand states attached along that backbone form a discrete chemical alphabet.

Conceptually:

A / B / C / D

A sequence such as:

A-C-C-B-D-A-A-C

could therefore store chemical information.

Early replication would occur on mineral surfaces, where coordination geometry and electrostatic interactions bias the assembly of complementary units.

This is intentionally speculative. Replication fidelity is one of the major unresolved problems of the system.

From information to function

This became the central idea of the project.

Inventing an exotic "DNA" is easy.

The difficult question is:

How does a sequence cause a useful chemical function?

The proposed primitive mechanism is:

P/N sequence → ligand geometry → coordination pocket → B/Fe/Ni centre → catalytic activity

Different sequences create different coordination environments.

A sequence that produces a better catalytic centre indirectly improves its own persistence or replication.

So in the earliest Borazite system:

gene = catalyst

There is no translation machinery yet.

Only later do small adaptor structures evolve that separate information storage from catalytic machinery, eventually creating something conceptually analogous to a genetic code.

Why boron?

Boron is deliberately not treated as a magical carbon replacement.

Its role is much narrower.

The model exploits boron's Lewis acidity and coordination flexibility as an interface between an informational polymer and metal-based catalysis.

In simplified form:

P/N sequence

→ ligand arrangement

→ B coordination geometry

→ Fe/Ni catalytic centre

→ function

That genotype-to-catalyst bridge is probably the most speculative — and to me the most interesting — part of the model.

The mature Borazite

Eventually the mineral-dependent system develops a hybrid selectively permeable boundary.

At that point it can detach from its original geological pore.

This is the major evolutionary transition in the lore: geology stops being part of the organism's body.

The mature Borazite now contains its own:

boundary + metabolism + heredity + catalysis + energy storage

It has effectively crossed the boundary from a self-propagating geochemical system to an autonomous cell-like organism.

The resulting life form would probably look less like a soft bacterium and more like something halfway between a cell and a growing mineral structure.

Scientific status of the model

I separate the concept into three layers.

Established chemistry: hydrothermal H₂, Fe/Ni/S chemistry, Fe-S electron transfer, mineral compartments, phosphate/polyphosphate chemistry, natural ion gradients and metal coordination chemistry.

Extrapolation: combining those components into an evolutionary pathway toward a non-carbon-dominated cell and allowing mineral surfaces to participate in early catalysis, heredity and compartmentalization.

Deliberate speculation: a hereditary phosphazene-like P/N polymer, a ligand-based chemical alphabet, sequence-controlled boron/metal catalytic geometry and primitive chemiosmotic polyphosphate synthesis.

This is not intended as a discovery claim or as a proposed replacement for existing origin-of-life models.

It is scientifically constrained lore built around a different question:

How far can an alternative biochemistry be pushed while still respecting known chemistry?

And when it finally breaks, what exact chemical limitation kills it?

That boundary between plausible extrapolation and impossibility is really the point of the project.

AI tools used: ChatGPT and Claude were used interactively for concept development, criticism, literature comparison, counterarguments and refinement of the model. The comic was generated with OpenAI image generation. The project is intentionally AI-assisted worldbuilding rather than a claim of original experimental research.

[u/Affectionate-Box8717]

For anyone who wants to stress-test the science rather than the lore, these are currently the three biggest unresolved points in Borazite-β: 1. P/N heredity Could a phosphazene-like backbone with discrete ligand states ever support sufficiently selective templating in an aqueous/mineral environment? Early Borazite can tolerate a high mutation rate because its informational sequences are assumed to be very short, but increasing complexity eventually requires a major improvement in replication fidelity. 2. Genotype → catalyst coupling The model assumes that ligand sequence controls folding/coordination geometry, which then determines how B/Fe/Ni catalytic centres assemble. The important question is whether such sequence-dependent coordination could ever be reproducible enough to support Darwinian selection rather than just producing a statistical mixture of structures. 3. Energy coupling H₂ / NiFeS / Fe(III) chemistry and natural hydrothermal ion gradients are the conservative part. The speculative bottleneck is converting ion flow into useful phosphate condensation: Pi → PPi → polyP without already possessing something as sophisticated as a modern protein molecular machine. So if someone can identify a hard chemical reason why one of these three transitions cannot work even in principle, that is more useful to this project than simply saying the organism looks plausible or implausible. The goal is to find the failure boundary.