Where to Find Calcite in New Jersey

New Jersey calcite is famous for its fluorescence at the Franklin and Sterling Hill zinc deposits in Sussex County. Franklin Marble calcite glows red under short-wave ultraviolet light, often with green willemite associated, and the Buckwheat dump and Mineral Museum collecting field are the standard public access points. Crystal habit is mostly cleavable masses, though tabular and scalenohedral crystals turn up in vugs of the franklinite-willemite ore. Trap-rock quarries through Hudson and Bergen counties (Paterson, Prospect Park) carry small clear calcite groups in basalt with prehnite. The fluorescent reds from Franklin are the prize, and a portable SW UV lamp is essential field equipment. The most productive ground is in Buckwheat dump (Sussex County), Sterling Hill museum (Sussex County), Paterson quarries (Passaic County).

Casual hand collection of common rocks and minerals like calcite is allowed on most BLM and U.S. Forest Service land in New Jersey, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.

Buckwheat dump (Sussex County) is the standout. Other strong ground includes Sterling Hill museum (Sussex County), Paterson quarries (Passaic County).