Primitive Technology: Iron Bacteria Cement (no fire/water insoluble)

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Iron bacteria lives by oxidizing melted iron 2 oxide in the water table, transforming it to insoluble iron 3 oxide, which precipitates out of solution forming an orange slime. This material can be focused to a paste that can be formed into items. After drying out entirely, the material becomes insoluble in water just as cement does.

I do not know for sure why it does this but I suspect that while it is moist, there is still some melted iron 2 oxide in the material. When air gets the opportunity to the iron 2 oxide and transforms it to iron 3 oxide it precipitates out. It then becomes a solid, cementing itself to the other iron 3 already present. This is most likely why iron bacteria every so often forms solid lumps also known as bog ore. Bog ore was once chiefly used for smelting into iron but was in addition from time to time used as a building material (not as a cement but as solid building blocks).

The potential use for this material might be as a cement-like material or mortar used in structures when iron bacteria can be discovered in big quantities. Fire is not used in the process as is the case with limestone or wood ash cement, and so reduces fuel consumption. It may be an appropriate use for iron bacteria contaminated with mud that might otherwise be unsuitable for smelting. Aggregates such as sand and gravel could also be added to bulk out the volume. More experiments need to be made.

About Primitive Technology:
Primitive technology is a hobby where you build things in the wild completely from scratch using no modern tools or materials. These are the strict rules: If you want a fire, use a fire stick – An axe, pick up a stone and shape it – A hut, build one from trees, mud, rocks etc. The challenge is seeing how far you can go without utilizing modern technology. I do not live in the wild, but enjoy building shelter, tools, and more, only utilizing natural materials. To find specific videos, visit my playlist tab for building videos focused on pyrotechnology, shelter, weapons, food & agriculture, tools & machines, and weaving & fiber.

#PrimitiveTechnology #Cement #Iron


  1. My boy play a survival game in real life. Next trying to find diamond

  2. Orang luar negeri asli pedalaman

  3. Supersonic Tumbleweed

    2:15 if you’re wondering, conditions become anoxic because flowing water traps oxygen as it cascades down the stream, standing water does not

  4. Damn, what kinda bird was making that calling sound at @5:04 ?

  5. Primitive soap would be cool. The chemistry is simple and the only hard part I think would be making a plant oil

  6. Keep working closely with the bacteria and try to always keep a part of the original to breed more. There is a good chance, if you treat it well, it will get better at what you are asking it to do. 🙏

  7. Barro Negro pottery from Mexico is basically the same thing. High iron content black clay. Finished pieces are usually grey unless polished with a special quartz tool in the production process.

  8. Can I ask how old you were when you started doing these videos?

    I feel so underachieved at my age and watching such craftsmanship 🤣

  9. Evren Kadar Şey


  10. Hm… Orange slime. Interesting.

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