Quartz from Fulton Township, Lancaster County, Pennsylvania, USA

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USA
Pennsylvania Lancaster County Fulton Township ⓘ Cedar Hill Quarry (Stoltzfuss Quarry)	[var. Chalcedony] Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania
ⓘ Haines & Kibblehouse Penn-Maryland Materials Quarry	[var. Prase] Collected April of 2012- David S. Bernstein
ⓘ Jenkins Mine (Jenkins Corner; North Rock Springs)	A.Mathauser collection
ⓘ Line pit (Lowe's Chromite Mine)	Mineralogical Record (1981): 12(3): 149-156.
ⓘ Peach Bottom	R. T. Faill and R. C. Smith II, "The Peach Bottom area in the PA-MD Piedmont,", p. 1, in The Mid-Atlantic Shore to the Appalachian Highlands: Field Trip Guidebook...", G. M. Fleeger and S. J. Whitmeyer, eds., Field Guide 16, Geological Society of America, 2010.
ⓘ Red Pit Mine	[var. Chalcedony] Geyer, A.R., Smith, R.C., Barnes, J.H. (1976) Mineral collecting in Pennsylvania (4th ed.). Commonwealth of Pennsylvania, Department of Environmental Resources, Topographic and Geologic Survey, 260 pages, at pp.154-155.
ⓘ Rock Springs Run	[var. Chalcedony] Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 204