Lambert Quarry, Cabot, Washington County, Vermont, USAi

Regional Level Types
Lambert Quarry	Quarry
Cabot	Town
Washington County	County
Vermont	State
USA	Country

Lambert's prospect is in the northern corner of the township, on the east side of a north-south ridge, roughly about 4 miles east of Robeson Mountain in Woodbury and about 700 feet above Woodbury Pond. It is on the farm of Myron Goodnough, near the Walden line, on the South Walden road which leads from Cabot to Hardins. Operator, Joseph Lambert, Macksville, Hardwick, Vt.

The granite, dark gray, is a quartz monzonite of dark bluish gray color (as dark as "dark Barre") and of even-grained fine texture, with feldspars and mica up to 0.2 inch, the latter rarely 0.3 inch. Its constituents, in descending order of abundance, are: Clear quartz with fluidal and other cavities in sheets and with rift cracks parallel to them filled with fibrous muscovite and extending into the feldspars; bluish gray to milk-white soda-lime feldspar (oligoclase) but little kaolinized, micacized, and with calcite; bluish-gray potash feldspar (orthoclase, kaolinized and micacized, with microcline); greenish biotite (black mica); and a little muscovite or bleached biotite. Accessory: Pyrite, titanite, apatite, and allanite (a crystal 0.33 by 0.09 millimeter rimmed with epidote). Secondary: Calcite, epidote, kaolin, and one or two white micas. It effervesces slightly with cold dilute muriatic acid.

This stone is a little finer textured than some of the " dark Barre," and more micaceous. Its mineral contrasts are more marked owing to its feldspars being whiter and less bluish, and its quartz not smoky. It ought to hammer light.

The quarry, opened in 1904, consists of several small preliminary openings. A little work was done in 1907.

The sheets are not yet sufficiently exposed to show their thickness. There are five sets of joints: (a), striking N. 85° E., dipping 75° N.; (b), striking N. 55° W., dipping 55° S. 35° W.; (c), striking N. 65° E., dipping 25° NNW.; (d), striking N. 5° E., vertical; (e), striking N. 60° E. and dipping 75° S. 30° E.