State by State


  • Specimen Number


  • Description

    Cut and polished slab of uniform gray granite. Identified by  Vermont survey staff.  It's "very likely that this granite slab is from the Rock of Ages Quarry in Barre, Vermont."

  • Classification

    Igneous. Plutonic. Granitic. Granite. Gray.

  • Location & Occurrence

    Part of the New Hampshire Plutonic Suite.

  • Geological Age

    Devonian with a U/Pb age on zircon of ~364 Ma.

  • Geoheritage

    One of the most uniform of all rocks here, a very common ornamental dimension stone.   Deepest granite hole quarry in United States, cut since 1885, mainly for gravestones. Quoting Atlas Obscura, "Most of America's granite headstones come from right here."

  • Links

    Link to State Geological Map from USGS.  Link to Vermont Geological Survey. Description by Atlas Obscura.

  • Other

     Why is it that gray, a dull color, is chosen for cemetery stones?

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Specimen stone for Vermont.
Closeup of Vermont stone. Outline map of Vermont. Geo Map of Vermont.