There isn't a single scientific name for clay. Clay is a group of minerals and not a single mineral itself.

Here's why:

* Clay is defined by its particle size: Clay minerals are defined by their particle size, being less than 2 micrometers in diameter.

* Many different minerals can be classified as clay: There are numerous minerals that meet this size criteria, including kaolinite, montmorillonite, illite, and smectite. Each of these has its own specific chemical formula and properties.

So, while "clay" is a common term, it isn't a specific scientific name like "quartz" or "feldspar".