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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

2018-2019 data for California are summarized in the table on this web page. The 2015 chapter data tables (XLS) and 2014 chapter containing text and data tables in PDF and XLS formats are available, with other years, through the links 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 2019 Minerals Yearbook Statistical Summary.

Nonfuel Mineral Commodity Production in California1,2,3
Mineral Commodity Units 2018 Qty 2018 Value
(1000 $)		 2019 Qty 2019 Value
(1000 $)
Cement, masonry 1000
metric tons
(1000 t)		 207 24,800e 189 22,300e
Cement, portland 1000 t 10,400 1,110,000e 10,200 1,120,000e
Clay: common 1000t 406 9,800 429 W
Gemstones, naturale 1000 t NA 863 NA 896
Gypsum, crude 1000 t 1,020 10,100 1,040 8,940
Rare earthse, 5 metric tons 13,900 W 27,600 W
Sand and gravel,
construction		 1000 t 104,000r 1,350,000r 100,000 1,410,000
Sand and gravel,
industrial		 1000 t 1,760 60,500 1,580 62,100
Stone, crushed 1000 t 41,100r 388,000r 40,100 430,000
Stone, dimension 1000 t 18 6,300 9 2,920
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.		   XX 1,420,000 XX 1,390,000
Total   XX 4,380,000r XX 4,450,000

eEstimated. rRevised. NA Not available. XX Not applicable. -- Zero.

1Includes data from the commodity chapters published in the Minerals Yearbook as they were completed and released through January 2023.

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.

5Rare-earth-oxide (REO) basis.

Minerals Yearbook Volume II California chapters:

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Current edition: 

| 2014 PDF format | 2014 XLS format | 2015 tables-only release | 

Recent years:

  • 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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