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Rockport Granite Company quarries, Rockport, Essex Co., Massachusetts, USA

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The Rockport Granite Company owned a number of quarries and was in business from 1865 to 1933. At its peak of operation, the company employed more than 800 men.

Mineral List

Mineral list contains entries from the region specified including sub-localities

32 entries listed. 15 valid minerals. 1 erroneous literature entry.

Localities in this Region


The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Merrill, George P. (1889): The Collection of Building and Ornamental Stones in the U.S. National Museum, p. 554.

Sears, J. H. (1894): Geological and Mineralogical Notes, No. 9 in Bulletin of the Essex Institute, vol. 26.

Sears, J. H.(1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County.

Dale, Thomas Nelson (1908): The Chief Commercial Granites of MA, NH, and RI (USGS Bulletin 354).

Brayley, Arthur W. (1913): History of the Granite Industry of New England.

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