Research19.4 mi
La Salle County Fire Clay
Mineral resource occurrence
USGS ResearchILLINOIS LOCAL FIELD REGION
Starved Rock & Matthiessen Geology Rockhounding Guide
High-value sandstone and canyon geology intended primarily for viewing and research rather than specimen removal.
LOCAL INTERACTIVE MAP
Starved Rock & Matthiessen Geology local map
Explore nearby Illinois records without leaving this hub. Status, coordinate precision and access evidence determine whether a pin is a realistic field destination.
Map
Land intelligence
Precision
This hub map shows nearby records only.Land and claim layers are planning aids, not collecting permission.
Reference photograph used for rock and mineral identification. It is not from this exact location or a guarantee that collecting is permitted.
Mapped leads in Starved Rock & Matthiessen Geology
The records below may represent collecting sites, managed programs, protected resources or research-only geology. Their individual status is more important than proximity.