Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less

HS code 251200 covers a group of naturally occurring siliceous materials known as siliceous fossil meals or diatomaceous earth. These materials are composed of the fossilized remains of microscopic aquatic organisms and are valued for their unique physical and chemical properties. They find widespread applications in various industries, making them an important part of the global trade landscape.

Siliceous fossil meals are typically extracted from natural deposits through mining operations. The raw material is then processed, which may involve drying, grinding, and in some cases, calcination (heating to high temperatures). These processing steps help to refine the material and enhance its desired characteristics, such as absorbency, filtration, and abrasiveness.

The primary input for this industry is the natural deposits of siliceous fossil meals, which are found in various regions around the world. Mining equipment, such as excavators and crushers, are used to extract and process the raw material. Energy sources, such as electricity or fuel, are also required for the drying and calcination processes.

Siliceous fossil meals produced under HS code 251200 have a wide range of applications. They are commonly used as filtration aids, absorbents, and abrasives in industries such as 282000 Chemical industry, 330000 Cosmetics and personal care, and 841900 Machinery. The output of this industry may also be consumed by manufacturers of 680610 Mineral wools and similar mineral insulations, 681099 Articles of cement, of concrete or of artificial stone, and 701990 Other glass articles.