Reddit reviews Black Iron Oxide - Fe3O4 - Natural - 10 Pounds
We found 2 Reddit comments about Black Iron Oxide - Fe3O4 - Natural - 10 Pounds. Here are the top ones, ranked by their Reddit score.
Fe3O4, also known as magnetite or Iron (II,III) OxideThis comes from a natural source so the product has slight variation in colorParticle size runs about 500 mesh (30 microns)Used in thermite welding, fertilizers, pigments, ceramics, along with a lot of other usesWe sell bulk for so many different uses, we don't include any specific use instructions
Try googling iron sand for sale.
One of the first results
Edit: copied wrong link. Fixed it. This is what I ususally buy.
Amazon has 10 lbs here. https://www.amazon.com/d/Mulches-Fertilizers-Soils/Black-Iron-Oxide-Natural-Pounds/B008LE63H6
I found this from Alibaba, though it says its pigment, i dont know if they've added anything else. https://www.alibaba.com/product-detail/2016-high-quality-iron-oxide-black_60583399767.html?spm=a2700.7735675.normalList.44.SjncO2&s=p