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Rose's Quarry, Gladwyne, Lower Merion Township, Montgomery Co., Pennsylvania, USA

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Latitude & Longitude (WGS84): 40° 3' 31'' North , 75° 16' 33'' West
Latitude & Longitude (decimal): 40.05875,-75.27600
Köppen climate type:Cfa : Humid subtropical climate

Ref,: Dana 6: 1069. A serpentine quarry.

Gordon locates the quarry at 0.25 miles west of Schuylkill River and 0.75 miles south of Woodland Station, P&R Railroad. Woodland (Wood Land) station is not longer existent, but served the Wood Estate, located in the river bend tract in the vicinity of Aloha Lane and Spring Mill Road (Historic Resource Impact Study,1862 Aloha Lane, Lower Merion Township, August 4, 2010, Wise Preservation Planning LLC). The station was located close to where Spring Mill Road would cross the tracks, if extended further (see p. 7). This then places the quarry more/less in the current (2017) Lower Merion Township Kenealy Nature Park, close to Lafayette Road.

Mineral List

9 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

252.17 - 541 Ma

ID: 2888997
Ultramafic rocks

Age: Paleozoic (252.17 - 541 Ma)

Description: Includes serpentine, steatite, and other products of alteration of peridotites and pyroxenites.

Comments: Digital map differences from 1980 printed map: name and map symbol changed from Xs (Serpentinite).

Lithology: Major:{serpentinite}, Minor:{metaperidotite,metapyroxenite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Samuel G. Gordon, "Mineralogy of Pennsylvania," Special Publication No. 1, The Academy of Natural Sciences of Philadelphia, p. 213, 1922.

Mineral and/or Locality  
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