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IOWA LOCAL FIELD REGION

Upper Mississippi Lead-Zinc District Rockhounding Guide

Historic galena and sphalerite geology around Dubuque, mostly research/heritage context.

LOCAL INTERACTIVE MAP

Upper Mississippi Lead-Zinc District local map

Explore nearby Iowa records without leaving this hub. Status, coordinate precision and access evidence determine whether a pin is a realistic field destination.

99records within 55 mi
Map
Land intelligence
Precision
This hub map shows nearby records only.Land and claim layers are planning aids, not collecting permission.
Mining / quarry context. General comparison image, not a photograph of this specific field region.
Mining / quarry context

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 Upper Mississippi Lead-Zinc District

The records below may represent collecting sites, managed programs, protected resources or research-only geology. Their individual status is more important than proximity.

Research1.1 mi

Roadcut

Phosphate

USGS Research
Research4.8 mi

Unknown

Mineral resource occurrence

USGS Research
Research5.1 mi

Unknown

Mineral resource occurrence

USGS Research
Research8.2 mi

Roadcut

Phosphate

USGS Research
Research8.8 mi

Roadcut

Phosphate

USGS Research
Research9.7 mi

Unknown

Mineral resource occurrence

USGS Research
Research11.3 mi

Outcrop

Phosphate

USGS Research
Research12.9 mi

Arnsdorf

Mineral resource occurrence

USGS Research
Research14.7 mi

Prospect

Lead

USGS Research
Research15.1 mi

Unknown

Mineral resource occurrence

USGS Research
Research21.2 mi

Quarry

Phosphate

USGS Research
Research22.3 mi

Unknown

Mineral resource occurrence

USGS Research
Research23.7 mi

Gogel Quarry

Mineral resource occurrence

USGS Research

Iowa rockhounding inventory

4,264total source records
317Ready, including conditions
3,862historical USGS records

The same U.S. inventory supplies the national map, the United States view on the global map, state maps and location guides. All 24 historical-record batches are included. Ready totals include Ready with conditions for the stated activity; read the individual conditions. A documented historical record with current access details pending says Update coming soon.

Source screening is not a field inspection or collecting permission. Materials, feature details, location guides and navigation options remain attached to individual records. Local and material-specific lists can be smaller than the complete inventory.

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