Vermont's Mineral Wealth: Talc, Asbestos, Granite, Marble, Slate

Vermont's complex geology—ancient metamorphic rocks, volcanic intrusions, and massive tectonic deformation—has endowed it with a distinctive mineral portfolio. The state is a leading U.S. producer of several industrial and dimensional stones.

1. Talc – #1 U.S. Producer

Vermont's talc deposits (mainly in the Green Mountains, e.g., Ludlow, Johnson) are among the highest purity in the world. Used in ceramics, paint, paper, plastics, cosmetics, and pharmaceuticals. The Vermont Talc Company (now part of Imerys) has operated for over a century.

2. Asbestos – Historic #1 Producer (Now Closed)

Chrysotile asbestos was mined extensively at the Belvidere Mountain (Eden/Lowell) and Talcville deposits from 1899–1993. Vermont led U.S. production for decades. All mines are closed. Legacy issues: EPA Superfund site at Belvidere Mountain; asbestos in local roads, water, and buildings remains a public health concern.

3. Granite – "The Granite State" (Shared with NH)

World-famous Bethel White Granite (Bethel) and Barre Gray Granite (Barre) are prized for uniform fine grain, high compressive strength, and "memorial quality" (monuments, statuary). Barre is the "Granite Center of the World." Used in U.S. Supreme Court, state capitols, countertops.

4. Marble – Danby & Rutland

Danby Imperial Marble (Danby) – pure white, translucent, used in Jefferson Memorial, Supreme Court, Arlington Memorial Amphitheater. Vermont Verde Antique (Rochester) – a serpentine "green marble" popular for decorative work. Danby Quarry is the world's largest underground marble quarry.

5. Slate – Poultney Valley

The Slate Valley (Poultney, Fair Haven, Granville NY) produces high-quality, unfading roofing slate in colors: purple, green, gray, black, red. Vermont/New York slate roofs last 100–150+ years. Also used for flooring, billiard tables, laboratory tops.

Other Notable Minerals

• Grossular Garnet (Eden Mills) – gem quality.
• Actinolite, Tremolite, Diopside – metamorphic silicates.
• Copper (Orange County) – historic mines (Ely, Pike Hill).

Note: Collecting on private land requires permission. Public lands (Green Mountain National Forest) allow limited hobby collecting (hand tools only); check current USFS rules.