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The Mineral Industry of California

By National Minerals Information Center

Statistics and information on the nonfuel mineral commodities produced in California

Minerals Yearbook Vol. II - Domestic

California mineral commodity producing areas map from 2014 Minerals Yearbook

2020-2021 data for California are summarized in the table on this web page. Available Yearbook chapters containing text and data tables in PDF and XLS formats are available through the links below. For the most recent information, see the mineral commodity pages linked in the table below.

Sources of information

California is the sole producer of  boron and rare earths and a leading producer of aggregates, cement, diatomite, feldpar, pumice, soda ash, and produced the widest variety of industrial minerals and metals of all the States.

 The following data table gives nonfuel mineral commodity production data for California extracted from Table 5 in the 2021 Minerals Yearbook Statistical Summary.

Nonfuel Mineral Commodity Production in California1,2,3
Mineral CommodityUnits2020 Qty2020 Value
(1000 $)		2021 Qty2021 Value
(1000 $)
Cement, masonry1000
metric tons
(1000 t)		(4)W(4)W
Cement, portland1000 t10,1001,140,000e9,3801,110,000e
Clay: common1000t422W419W
Gemstones, naturale1000 tNA879NA881
Gypsum, crude1000 t1,54013,2001,32017,600
Rare earthse, 5metric tons38,500W42,400W
Sand and gravel,
construction		1000 t98,600r1,440,000r97,9001,480,000
Sand and gravel,
industrial		1000 t1,390r61,900r1,46082,400
Stone, crushed1000 t40,300434,000r40,000456,000
Stone, dimension1000 t93,090(4)W
Combined values of
boron minerals,
clay (bentonite,
common,
montmorillonite,
kaolin), diatomite,
feldspar, gold,
lime, magnesium
compounds, pumice
and pumicite, salt,
silver, soda ash,
zeolites, and
values indicated
by symbol W.		 XX1,550,000XX1,890,000
Total XX4,640,000rXX5,030,000

eEstimated. rRevised. NA Not available. W Withheld. XX Not applicable. 

1Includes data from the commodity chapters published in the Minerals Yearbook as they were completed and released through January 2025.

2Production as measured by mine shipments, sales, or marketable production (including consumption by producers). Mine output measured as sold or used by producers is primarily shown in the tables, because values can be assigned. Where sold or used data are not available, actual mine output is used as the production measurement and value is estimated average price of the mineral commodity for that year. Data are reported in gross weight unless otherwise specified.

3Data are rounded to no more than three significant digits; may not add to totals shown.

4Withheld to avoid disclosing company proprietary data.

5Rare-earth-oxide (REO) basis.

Minerals Yearbook Volume II California chapters:

  • PDF Format:

| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010-2011 | 2012-2013 | 2014 |

  • XLS Format:

| 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010-2011 | 2012-2013 | 2014 | 2015 tables-only release | 


Archive:| 1932-1993 |

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