Vermiculite is a hydrous phyllosilicate mineral. It undergoes vital expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is robotically produced in commercial furnaces. Vermiculite is shaped by weathering or hydrothermal alteration of biotite or phlogopite. Large commercial vermiculite mines currently exist in Russia, South Africa, China, and Brazil.
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Bagged 4 quart size. Only for the hobbyist that doesn’t want a big 4 cu ft bag
Grade 3 – Coarse. Great for potted plants
Vermiculite is a natural mineral, permanent, clean, odorless, non-toxic and sterile
Holds moisture and nutrients, leaving more space for air within the soil
Promotes faster root growth and quick anchorage for young roots
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