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Corundum from
Crump's Quarry, Mineral Hill, Elwyn, Middletown Township, Delaware Co., Pennsylvania, USA

Description
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Gordon's Mineralogy of Pennsylvania (1922) p. 191
Data
Mineral Data:	Click here to view Corundum data
Locality Data:	Click here to view Crump's Quarry, Mineral Hill, Elwyn, Middletown Township, Delaware Co., Pennsylvania, USA

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