National Minerals Information Center

The Mineral Industry of Connecticut

Statistics and information on the nonfuel mineral commodities produced in Connecticut

Minerals Yearbook Vol. II - Domestic

Minerals Yearbook Vol. II - Domestic

The 2014 Connecticut chapter containing text and data tables is available in PDF and XLS formats. Other years are available through the links below.

Sources of information

Connecticut produces crushed stone (mainly traprock and limestone), and construction sand and gravel. Clay is mined for brickmaking. Intermittently small dimension stone (granite and sandstone)  quarries are active.

Aggregates by State and End Use, 1971-2015

Statistical Summary

Mineral Commodity Summaries

Mineral Industry Surveys

Minerals Yearbook Volume I -- Metals and Minerals

Mineral Yearbook Volume II - Connecticut chapters

The following data table gives nonfuel mineral commodity production data for Connecticut extracted from Table 5 in the 2015 Minerals Yearbook Statistical Summary.

Nonfuel Mineral Commodity Production in Connecticut1,2,3
Mineral Commodity Units 2014 Quantity 2014 Value (thousands) 2015 Quantity 2015 Value (thousands)
Clay, common   (6) (7) (6) (7)
Gemstones, naturale   NA 7 NA 8
Sand and gravel, construction Thousand metric tons (1000 t) 5,360 55,300r 5,120 49,900
Stone, crushed 1000 t 9,220r 144,000r 9,360 142,000
Stone, dimension   (6) (7) (6) (7)
Total (partial)   XX 200,000r XX 194,000

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

1Includes data from the commodity chapters published in the Minerals Yearbook as they were completed and released through June 2018.

2Production as measured by mine shipments, sales, or marketable production (including consumption by producers).

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

6Withheld to avoid disclosing company proprietary data.

7Withheld to avoid disclosing company proprietary data; value included in "Undistributed" in the U.S. total value.

Minerals Yearbook Volume II Connecticut chapters:

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Robert M Callaghan

State Mineral Specialist
National Minerals Information Center
Phone: 703-648-7709

Madan M Singh

State Mineral Specialist
National Minerals Information Center
Phone: 703-648-4916