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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $2,173,960 | $1,205,662 | $3,220,891 | $4,633,699 | $2,643,739 | $3,265,491 | $4,307,567 |
| Quartzite, crude/roughly trimmed | | $1,416,763 | $669,242 | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $843,183 | $170,209 | | $1,500 | | $35,916 | $119 |
| Total | $3,017,143 | $2,792,634 | $3,890,133 | $4,635,199 | $2,643,739 | $3,301,407 | $4,307,686 |
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