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Clinozoisite from
Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester Co., Pennsylvania, USA



Site Photo

Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester Co., Pennsylvania, USA
© M.Heintzelman
Description
Habit:Prismatic, somewhat rectangular in cross section, rarely terminated
Colour:greenish qrey to pale greyish brown
Quality of samples:Good crystals or rich for species - important (!)
Rarity at site:Common
Confirmation
Validity:Believed Valid
References
References:Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania. A. Montgomery "The Mineralogy of Pennsylvania 1922-1965" pgs. 44-45"
Comments
Early in the 1950's Excellent crystals were being collected in amphibolite gneiss at this location. crystals ranging from minute needles to stout prismatic crystals six inches long to one inch across. In 1960, the first accurate identification of Clinozoisite in PA was made by D. M. Lapham, PA. Geo. Survey, using specimens from this site.
Mineral and/or Locality
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