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GeneralQuarry in Baltimore

11th Jul 2013 03:12 UTCHershel Friedman

Last week I was in Baltimore, and there is an old quarry on Greenspring Ave which is now filled with water and has been developed. The lake formed by the filled quarry and the new development surrounding it is called "Quarry Lake", and it is in a suburban area in Baltimore County about a mile north of the Baltimore City line.
Here is the location on Google Maps

Take a look at the street view and you can see some of the quarry walls.

I don't see any reference material on this quarry or a location on mindat. There are some old serpentine/chromite deposits nearby, as well as the old copper mine nearby on Smith Ave. The Cockeysville Marble is also a short distance a way, though the walls of the quarry definitely don't look like marble. Anyone know the name of this quarry or if anything was found there?

11th Jul 2013 11:40 UTCJonathan Ertman

Rutile,brown tourmaline,apatite,dolomite,thats what friends say.Jon

11th Jul 2013 13:12 UTCJonathan Ertman

also one should look for rutile from there they can be some the best found sharp faces on white dolomite just

like the howard montgomery quarry minerals jon,dark red complex xls.

12th Jul 2013 03:21 UTCHershel Friedman

The quarry is totally gone - its entirely filled with water and developed around all its sides. Unless there are some dumps in the woods somewhere there is no where to collect or find those minerals you described such as rutile. Anyone know the name of the quarry, what type of rock it is hosted in, and if any collectible specimens were ever produced?

15th Jul 2013 11:08 UTCJonathan Ertman

check out mineral bliss for answers about this quarry jon,a real good article

15th Jul 2013 16:09 UTCHershel Friedman

Jon, do you have any links or references to search for on Mineral Bliss? I don't even know the quarry name, so wouldn't know what to search for.

Thanks

Hershel

15th Jul 2013 19:25 UTCStuart Herring

Hi Hershel

It was known as the McMahon Quarry AKA Greenspring quarry. http://www.mindat.org/loc-16024.html

Up till about 2 years ago there was a boulder pile on the left south side of the quarry right inside that park. Found some interesting minerals there...some of the boulders where from the quarry most where from excavations in the area...unfortunately now gone. Jon is right ....nice rutile's came from there.

Stuart

19th Jul 2013 03:35 UTCHershel Friedman

Thanks Stuart! The location on Mindat is totally off in that case. It should be on the other side of I-83 on the west side of Greenspring Ave. This should be corrected. Is there any excavated materials or dumps from the constructions still accessible in the woods somewhere?

19th Jul 2013 07:48 UTCStuart Herring

Yes the cords are way off. I went there last year...not much left. Have a go at it! PM me if you are interested in other locations around MD.

Stuart

24th Jul 2013 02:13 UTCHershel Friedman

Thanks Steve. The admin's should fix the coords. The correct coords can be seen on this link on google maps - the quarry lake is clearly visible. Also the area is not really in the Bare Hills - the Bare Hills area is more to the east closer to the I-81 Jones Falls Expressway.

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