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

Locality type:Quarry
Classification
Species:Clinozoisite
Formula:{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
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.
Habit:Prismatic, somewhat rectangular in cross section, rarely terminated
Colour:greenish qrey to pale greyish brown
Quality for species:Good crystals or rich for species - important (!)
Abundance 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"
Associated Minerals Based on Photo Data:
Quartz1 photo of Clinozoisite associated with Quartz at this locality.
Byssolite1 photo of Clinozoisite associated with Byssolite at this locality.
Prehnite1 photo of Clinozoisite associated with Prehnite at this locality.
Data
Mineral Data:Click here to view Clinozoisite data
Locality Data:Click here to view Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester Co., Pennsylvania, USA
Photo GalleryView Gallery (6 photos)
 
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