Allophane

Of the Greek ales , other and phaneîn , to appear.

A allophane is a Minéral composed of Silicate of Aluminum hydrated, badly crystallized.

Its chemical formula: $Al\_2O\_3\; (SiO\_2)\; \_\; \{1,3-2\}\; 2,5-3H\_2O\; \backslash ,$.

Color: blue, green, brown with without color.

Layers

Discovered in 1816 with Gräfenthal, Saalfeld, Thuringie (Germany)

Random links:

Ntui | Alexandre Michelin | Panaro (department) | College of Sunnydale | Rajah Beni Makada Tangier | Super_Bowl_XXX

© 2007-2008 speedlook.com; article text available under the terms of GFDL, from fr.wikipedia.org