Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Lake Superior Agate from
Chequamegon Bay, Bayfield, Bayfield County, Wisconsin, USA


Locality type:Bay
Classification
Species:Quartz var: Lake Superior Agate
Formula:SiO2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Lake Superior Agate data
Locality Data:Click here to view Chequamegon Bay, Bayfield, Bayfield County, Wisconsin, USA
Data Identifiers
Mindat Occurrence Record ID:902886
Long-form Identifier:1:3:902886:9
GUID (UUID V4):0
Nearest other occurrences of Lake Superior Agate
18.1km (11.2 miles) ⓘChequamegon Bay, Ashland, Ashland County, Wisconsin, USA
59.9km (37.2 miles) ⓘBlack River Harbor Beach, Black River Harbor, Gogebic County, Michigan, USA
68.3km (42.5 miles) ⓘBurlington Bay, Two Harbors, Lake County, Minnesota, USA
69.2km (43.0 miles) ⓘAgate Bay, Two Harbors, Lake County, Minnesota, USA
84.9km (52.8 miles) ⓘBluefin Bay, Tofte, Cook County, Minnesota, USA
89.9km (55.9 miles) ⓘBrighton Beach, Duluth, Saint Louis County, Minnesota, USA
References
Brian Cowger
 
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