Rockville Crushed Stone Co. Quarry
Mineral resource occurrence
USGS ResearchMARYLAND LOCAL FIELD REGION
Historic gold, quartz and gravel research from Montgomery County toward Frederick, with land and mineral-right checks essential.
LOCAL INTERACTIVE MAP
Explore nearby Maryland records without leaving this hub. Status, coordinate precision and access evidence determine whether a pin is a realistic field destination.

Reference photograph used for rock and mineral identification. It is not from this exact location or a guarantee that collecting is permitted.
The records below may represent collecting sites, managed programs, protected resources or research-only geology. Their individual status is more important than proximity.
Mineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchGold
USGS ResearchGold
USGS ResearchGold
USGS ResearchGold
USGS ResearchMineral resource occurrence
USGS ResearchGold
USGS ResearchGold
USGS ResearchGold
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchMolybdenum
USGS ResearchIron
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchIron
USGS Researchtransported boulders and surficial clasts
Core atlasMineral resource occurrence
USGS ResearchCopper, Cobalt, Nickel
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS Researchberyl, mica and feldspar pegmatite occurrences
Core atlascalcite in carbonate rocks, veins and quarries
Core atlashistoric copper prospects and Piedmont mineralization
Core atlasfeldspar-bearing pegmatites and historic quarry contexts
Core atlasmetamorphic garnet occurrences in Piedmont/Blue Ridge rocks
Core atlas