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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $2,697,207 | $3,966,020 | $4,007,740 | $4,377,236 | $4,041,225 | $3,743,088 | $4,715,707 |
| Quartzite, crude/roughly trimmed | $887,204 | $1,031,706 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $738,336 | $115,690 | $1,502,116 | $2,173,859 | $1,472,347 | $2,037,807 | $2,703,543 |
| Total | $4,322,747 | $5,113,416 | $5,509,856 | $6,551,095 | $5,513,572 | $5,780,895 | $7,419,250 |
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