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The Vermont State Rocks

Vermont's complex geology has led to the development of a diverse and economically healthy minerals industry which began in Vermont over 200 years ago. Because three of Vermont's rocks are equally important to the state's economy, all three - granite, marble and slate - were formally recognized as State Rocks by Act No. 221 of 1992. Marble, a metamorphic rock composed of the mineral calcite, can generally be found in southwestern Vermont. The marble quarry in Danby is the world's largest underground quarry, covering twenty acres. Vermont marble ranges in color from pure white to black. It has been used in building Radio City Music Hall, the National Art Gallery, the Jefferson Memorial and the Vermont State Capitol.

------- from Office of the Secretary of State, Vermont Legislative Directory and State Manual, Biennial Session, 1993-1994, p. 23.