Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
orthoclase
Potassium aluminium silicate (KAlSi3O5) a member of the feldspar family. Important as a constituent of acid igneous rocks. Used in the manufacture of glass, pottery etc.
The monthly journal for the quarry products industry.