Mineral: Feldspar
Primary Commodity: Feldspar
Primary Commodity Uses: Feldspar is one of the most common minerals on the planet and is mostly used for glassmaking and ceramics.

(Credit: Scott Horvath, USGS. Public domain.)

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.

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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 |2014 |2015 |2016 |2017 |2018 | 2019 | 2020 |2021 |
• 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 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
    XLS Format:
       | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
• Archive
       | 1932-1993 |

Special Publications

• Historical Statistics for Mineral and Material Commodities in the United States
  Data Series 140
  • Feldspar
• U.S. Mineral Dependence-Statistical Compilation of U.S. and World Mineral Production, Consumption, and Trade, 1990-2010
  Open-File Report 2013-1184