From left to right: Muscovite from Rangi, Tanzania, Tangerine Quartz from Minas Gerais; Vivianite from near Potosi, Bolivia; Spinel from Je...
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Home » Archive for Juni 2012
Juni 05, 2012
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adit,
cave,
Fred Parker,
Jeff Nagy,
Maryland,
Maryland DNR,
Michael Burditt,
Patapsco Valley State Park,
Tunnel Feldspar MIne
Feldspar Mining in Maryland
Pictured above at the long abandoned Tunnel Feldspar Mine in Howard County, are Maryland Park Service Supervisor for Patapsco Valley State P...
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