Feldspar
Statistics and Information

Feldspars are aluminosilicates containing varying amounts of calcium, potassium, or sodium.  In glassmaking, feldspar provides alumina for improving hardness, durability, and resistance to chemical corrosion.   In ceramics, feldspar is used as a flux, lowering the vitrifying temperature of a ceramic body during firing and forming a glassy phase.   Glass and ceramics continued to be the major end uses of feldspar.

Publications

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Annual Publications

Mineral Commodity Summaries

• Feldspar
    PDF Format:
       | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |2013 |
• Appendixes

Minerals Yearbook

• Feldspar and Nepheline Syenite
    PDF Format:
       | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
    XLS Format:
       | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
• Archive
       | 1932-1993 |

Special Publications

• Historical Statistics for Mineral and Material Commodities in the United States
  Data Series 140
  • Feldspar

Contact

• USGS Mineral Commodity Specialist
  Arnold O. Tanner
  Phone: 703-648-4791
  Fax: 703-648-7757
  Email: atanner@usgs.gov