H&K Silver Hill Quarry, Narvon, Caernarvon Township, Lancaster Co., Pennsylvania, USA
Quarry in Hammer Creek Argillite with diabase intrusion, operating from 1986 to present. Observations of Zeolite mineralization.
var: Manganoan Pectolite
10 entries listed. 6 valid minerals.
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DE Min, Soc. 04/08, DCNR-PA Geo, Geode - Berks Co. Min Soc., March '06
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