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Canton Lead Mines, Rattlesnake Mt, Canton, Hartford Co., Connecticut, USA

Amethyst
Canton Lead Mines, Rattlesnake Mt, Canton, Hartford Co., Connecticut, USA

Photo: Rob Lavinsky

Latitude: 41°50'N
Longitude: 72°55'W

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A hydrothermal fault vein deposit, probably related to Mesozoic rifting. Very little has been written about this old locality, most references give only the briefest mention. Minor amounts of galena, sphalerite, and lead secondary minerals occur. The locality is most famous for its amethyst, which occurs lining cavities in breccia and varies from larger lavender, mottled and translucent crystals to smaller, clearer, deeply colored druses. Colorless and milky quartz also occurs.

Mineral List

Cerussite
Chalcopyrite

Galena
Pyromorphite

Quartz
var: Amethyst

Sphalerite
Wulfenite

8 entries listed. 7 valid minerals.

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References

Hiller, John, Jr. (1971): Connecticut Mines and Minerals. Privately published.

Schairer, John F. (1931): Minerals of Connecticut. State Geological and Natural History Survey of Connecticut Bulletin 51.

Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.

Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue), Vol. 70, No. 6, p. 399.

Shepard, Charles Upham. (1837): Report on the Geological Survey of Connecticut.

White, John, and Cook, Robert. (1990): Amethyst Occurrences of the Eastern United States. Mineralogical Record. vol. 21, no. 3, pp. 203-213.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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