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Beola Ghiandonata
Light-grey granitic augen gneiss with heterogeneous fine grain-size; strong mineralogical lineation due to the stretching of quartz and feldspars centimetric-size aggregates. Mineralogical composition: quartz, glomeroblastic K-feldspar (microcline), plagioclase, biotite, muscovite, tourmaline. |
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THE HISTORICAL STONES |
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Malpensa Airport
The most abundant Ossolano material is represented by serizzos, an ortogneiss, similar to beolas with regard to age, but with a different grain pattern and level of deformation. The high concentration of serizzo quarries is located in the top part of the Ossola Valley and in the Valleys of Antigorio and Formazza. Serizzo has been used also for flooring the Milan and Frankfurt airports, just like the coverings of the underground in Milan , Bruxelles and Singapore. 
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