Burlington County

Burlington County, New Jersey has a genuine claim to amber, jasper, and agate — New Jersey amber (also called Raritan amber) comes from the Late Cretaceous Raritan and Magothy formations, and Burlington County's Cretaceous-era sands, gravels, and marls are named alongside the Sayreville clay pits (Middlesex County) as a documented amber source in the state. Jasper and banded agate are also documented regionally, tied to the same coastal plain sand and gravel deposits. What this research could not do is pin that geology to the DB's specific coordinate, which lands in Delanco Township on the Delaware River — a town, not a documented pit or exposure. Treat this as a county-level regional entry rather than a single confirmed collecting spot.

The batch coordinate for this entry lands in Delanco Township, a Delaware River community in northern Burlington County. UNVERIFIED: whether Delanco itself has any documented amber, jasper, or agate exposure — no source tied the specimens to this specific point rather than to Burlington County's Cretaceous formations generally.

UNVERIFIED at the specific-site level. General practice for New Jersey Cretaceous amber and jasper/agate material is screening sand and gravel exposures (clay pit walls, stream cuts, or post-storm shoreline deposits) rather than hard-rock digging.

No specific site, pit, or exposure within Burlington County was confirmed as currently open to the public for this entry. New Jersey's Cretaceous clay pit amber sources elsewhere in the state (such as Sayreville) are frequently on private or industrial land requiring permission — assume the same caution applies here until a specific public access point is confirmed.