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Featured Refinement: Lake Superior Shoreline & Glacial Drift Rock Lot
Rock & Mineral Types: Unakite, Red Jasper, Amygdaloidal Basalt, Quartz, Epidote, Porphyry
Condition: Natural, Raw, Unpolished Water-Worn Rough
Origin: Lake Superior Shoreline & Riverbed Drift, Minnesota, USA
Ideal Use: Rock Tumbling Rough, Craft Projects, Fountain Fill, Aquascaping, Display
Fast Facts for Collectors
Glacial Drift Variety: Formed over 1.1 billion years ago during the Midcontinent Rift System and reshaped by glacial transport, this lot showcases the geological diversity of the Lake Superior basin.
Featured Minerals: Includes distinct pink feldspar and green epidote (unakite), rich iron-stained red jasper, quartz seams, and pitted vesicular volcanic rocks.
Tumbler's Mix: Excellent hardness profile (Mohs 6–7 across most pieces) makes this lot ideal for running through a rotary or vibratory tumbler for a high-gloss finish.
Item Description
Up for sale is a large, hand-picked lot of authentic Lake Superior Shoreline & Drift Rocks collected in Minnesota.
Key Features Included:
Diverse Mineral Mix: Features unakite (pink feldspar & green epidote), red jasper, quartz nodules, porphyritic rocks, banded chert, and dark volcanic basalt.
Natural Shoreline Smoothness: Water-worn and naturally tumbled by Lake Superior wave action, preserving unique textures and surface patterns.
Versatile Uses: Perfect size for rock tumblers, lapidary cabbing, aquarium/terrarium accents, mosaic art, or educational collections.
Condition & Details:
Quantity: Large multi-piece lot (over 50 individual stones as pictured).
State: 100% natural, raw, and unpolished (photographed dry).
Scale: Photographed alongside a U.S. Lincoln Cent (penny) for accurate size reference.
Carefully packaged and shipped fast