"Figure 17: Igneous rock made up the majority of construction mineral extraction throughout the timeseries ","" "Breakdown of Scottish construction minerals, 1997 to 2017","" "","" "Notes","1. Data for slate, gypsum and chalk not available. 2. Construction minerals include sand and gravel, gypsum, chalk, slate, silica sand, igneous rock, limestone and dolomite, and sandstone." "Unit","Thousand tonnes" "","" "","Silica sand","Slate","Sand and gravel (land-won)","Sandstone","Limestone and dolomite","Igneous rock" "1996","564","…","9904","2172","1607","19933" "1997","576","…","9900","1712","1624","19863" "1998","…","…","10074","2539","1535","20500" "1999","…","…","10031","1657","1507","21761" "2000","…","…","10022","1715","1722","21455" "2001","…","…","10753","1603","1733","20034" "2002","…","…","8643","1645","1635","20543" "2003","…","…","8103","1481","1730","20920" "2004","…","…","8455","1613","1746","23724" "2005","522","…","8808","1466","1746","23052" "2006","542","…","8592","1372","1534","23194" "2007","503","…","9025","1502","1555","26345" "2008","508","…","8097","1381","1473","22925" "2009","403","…","7512","1895","1210","19082" "2010","…","…","7365","1806","1072","19684" "2011","…","…","6366","1910","1251","19113" "2012","440","…","5772","1564","1120","17383" "2013","…","…","4911","1591","1269","15623" "2014","…","","5111","2766","1302","16939" "2015","…","","5670","2977","1402","18234" "2016","…","","6238","3145.079069","1480.43852","19260.48241" "2017","…","","5859","3053.436474","1437.3009","18699.26263"