from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A monoclinic-prismatic mineral containing aluminum, hydrogen, magnesium, oxygen, and silicon.


from Wiktionary, Creative Commons Attribution/Share-Alike License



  • But a study this year looking at dust generated by off-road vehicle use at the Nellis Dunes Recreation Area near Las Vegas found dust samples with naturally occurring arsenic and palygorskite, a mineral similar to asbestos, which could under certain circumstances pose potential health risks.

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  • The researchers knew that the Mayans made their blue by heating the pigment with palygorskite (a type of clay); their analysis showed that this heating allowed the pigment to enter tiny channels in the clay which are sealed after the mixture cools, protecting and keeping the pigment true blue for centuries.

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  • The researchers found samples of high-purity palygorskite clay in several locations on the Yucatan Peninsula, in a 40 km radius of the well-known Maya archaeological site of Uxmal.


  • "Present day native communities on the Yucatan Peninsula are familiar with and use palygorskite clay for a variety of purposes, ranging from making candles on All Saints 'Day and household and artistic pottery to remedies for mumps, stomach and pregnancy pains and dysentery," Sánchez del Río explained to SINC.


  • Crystal-chemical analysis then enabled researchers to obtain the formula for the composition of Mayan palygorskite clay: (Si7. 96Al0.07) O20 (Al1. 59Fe3+0.20Mg2.25) (OH) 2


  • A Spanish research team has traced the route followed by the Maya to obtain palygorskite clay, one of the basic ingredients of Maya Blue.


  • Nowadays, modern pharmacology uses clays like palygorskite to produce anti-diarrhoea medicine, a remedy the Maya began to use more than a thousand years ago.


  • The team, including Mercedes Suárez, from the Geology Department of the University of Salamanca and Emilia García Romero, from the Universidad Complutense in Madrid, analysed various samples of palygorskite clay on the Yucatan Peninsula to compare them to samples from other places.


  • As part of the research, the Spanish research team defined the features of palygorskite clay on the Yucatan Peninsula in Mexico.

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  • Fuller’s earth is composed of the mineral palygorskite (at one time this mineral was called "attapulgite").



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