| http://www.w3.org/ns/prov#value | - ROCKFORD: areaCassiterite , Mica, Beryl, Aquamarine, Metastrengite, Bermanite, Rockbridgeite and other gems, crystals and minerals (mainly found in pegmatites and veins in schist and gneiss.); entire area, as described for Hissop, old mica and tin mines, abundantgems, crystals and minerals; SE limits of town, excavationsGold; N, toward Goodwater, many pegmatite outcropsCassiterite, Feldspar crysta
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