C.K. Williams & Co. Quarry (Williams Quarry), Chestnut Hill, Easton, Forks Township, Northampton Co., Pennsylvania, USA

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Quarry in serpentine/tremolite, located on Chestnut Hill, above the Delaware River, North of Easton. Owned by the C.K. Williams & Co., Easton, PA. Encompassing the original sites of the Sherrer, Verdolite, and minor workings of the Fox quarries, this site was greatly expanded in the mid 1920's, exploiting Serpentine for ornamental/building stone and Tremolite as mineral pulp additives in paint and paper products. By the mid 1930's, demand for building stone diminished, but the market for it's mineral-pulp carried the company until it's close of operation in the mid 1940's.

In the 1950's the property was put up for sale and purchased by famed Mineralogist Arthur Montgomery, at that time an acting professor at Lafayette College in Easton. He deeded the property to Lafayette in 1953, for the purpose of preserving this unique mineralogical site in perpetuity.

Note that most, if not all, 'eastonite' from this locality is in fact a mixture of phlogopite and serpentine. There are no modern analysis confirming the presence of eastonite in Easton. See Livi and Veblen (1987) “Eastonite” from Easton, Pennsylvania: A mixture of phlogopite and a new form of serpentine, American Mineralogist, 72, 113-125

References

Rocks & Minerals (1942): 17: 344.

Montgomery, Arthur (1957) Three occurrences of high-thorian uraninite near Easton, Pennsylvania, American Mineralogist, volume 42, p. 804-820.

Montgomery, Arthur (1969) The Mineralogy of Pennsylvania 1922-1966, Academy of Natural Sciences, Philadelphia, Special Publication No. 9.

Smith, II, R. C. (1977) Metanovacekite chapter in The Mineralogy of Pennsylvania, 1966-1975, Friends of Mineralogy Pennsylvania Chapter, Special Publication No. 1, p. 174-178.

MATRIX, sum. 200 pg. 95-102.

Mineral List

Mineral list contains entries from the region specified including sub-localities

Actinolite Amphibole Group var: Uralite Anthophyllite Augite Autunite Azurite Baryte Biotite Boltwoodite Brucite ? Calcite Carnotite ? Celestine Chalcocite Chalcopyrite 'Chlorite Group'

Chrysocolla Cuprite Diopside Dolomite Eastonite (TL) 'Ferro-actinolite-Tremolite Series var: Nephrite' Fluorapatite Fluorite Galena Graphite Gypsum Hematite Hydromagnesite Ilmenite Limonite Magnesite

Malachite 'Manganese Oxides var: Manganese Dendrites' Marcasite Metanováčekite Molybdenite Muscovite Paragonite Phlogopite Pyrite Pyrolusite Quartz Scapolite var: Wernerite 'Serpentine Group' Sphalerite Talc Thorianite

Thorite Thorogummite Titanite Topaz 'Tourmaline' Tremolite Uraninite var: Thorian Uraninite Uranophane Vesuvianite Weeksite Wölsendorfite Wulfenite Zaratite Zircon

71 entries listed. 49 valid minerals. 1 type locality (valid mineral). 2 erroneous literature entries.

Localities in this Region

USA Pennsylvania Northampton Co. Forks Township Easton Chestnut Hill C.K. Williams & Co. Quarry (Williams Quarry) Sherrer Quarry Verdolite Quarry