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

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

Photo: 2010, JGW

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Described as being on the "grounds of the Pennsylvania Training School for the Feeble Minded.", 0.4 km (0.25 mile) north of State Road, and 1.6 km (1 mile) west of Media. Feldspar quarries, pegmatites, and exposures are nearby.

In "pyroxenite" and "metaperidotite."

References

Gordon's Mineralogy of Pennsylvania (1922) p. 191

Mineral List

28 entries listed. 15 valid minerals.

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