Arieh Singer has written:

'Developments in palygorskite-sepiolite research' -- subject(s): Nanostructured materials, Palygorskite, Meerschaum, Research

* coal

* lignite * iron ore * copper

* lead

* zinc

* uranium

* tungsten

* Mercury

* pyrites

* magnesite,

* fluorspar

* gypsum

* sepiolite

* kaolin

* potash

* hydropower

Crystal cat litters are most commonly made of zeolite, diatomite, and sepiolite. They also contain baking soda or scented crystals to help with odor control.

Spain most important resources are coal lignite iron ore copper lead zinc uranium tungstean Mercury magnestite fluorspar gypsum sepiolite kaolin potash hydropower arable land

The make up of scoopable cat little is dependent upon the type little it is. Non-Clumping scoopable cat little is often made up of zeolite, diatomite, and sepiolite where as clumping scoopable cat littler often consists of quartz, diatomaceous earth, and bentonite clay.