Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Chert from
Holman-Cliffs Mine Holman-Brown (Brown No. 1 Mine; Brown No. 2 Mine; North Star Mine; C C I; Cleveland Cliffs Iron Company), Itasca County, Minnesota, USA


Locality type:Mine
Classification
Type:Chert
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chert data
Locality Data:Click here to view Holman-Cliffs Mine Holman-Brown (Brown No. 1 Mine; Brown No. 2 Mine; North Star Mine; C C I; Cleveland Cliffs Iron Company), Itasca County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:503120
Long-form Identifier:1:3:503120:7
GUID (UUID V4):0
Nearest other occurrences of Chert
0.4km (0.2 miles) ⓘPlummer Mine (Plummer Mine; Homestead Mine; Diamond Mine; USS Plummer), Itasca County, Minnesota, USA
0.4km (0.2 miles) ⓘHolman-Cliffs Mine (North Star Mine; Great Northern Iron Ore Properties), Itasca County, Minnesota, USA
0.4km (0.2 miles) ⓘHolman-Cliffs Mine Bingham (G N Iron Ore Prop), Itasca County, Minnesota, USA
0.7km (0.4 miles) ⓘHomestead Mine (U.S.Steel Reserve O-68), Itasca County, Minnesota, USA
0.8km (0.5 miles) ⓘJudd Mine (C C I), Itasca County, Minnesota, USA
0.8km (0.5 miles) ⓘSally Mine (South Judd Mine; C C I Company; C C I Mine), Itasca County, Minnesota, USA
1.3km (0.8 miles) ⓘDiamond Mine, Itasca County, Minnesota, USA
1.3km (0.8 miles) ⓘDanube Mine (Orwell Mine; C C I), Itasca County, Minnesota, USA
1.7km (1.0 miles) ⓘN.W.I. Reserve St-1 Prospect (State of Minnesota), Itasca County, Minnesota, USA
2.0km (1.3 miles) ⓘLewis Mine (C C I; Cleveland Cliffs Iron Company), Itasca County, Minnesota, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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