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
Duncan Mine (State of Minnesota), Saint Louis 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 Duncan Mine (State of Minnesota), Saint Louis County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:502825
Long-form Identifier:1:3:502825:2
GUID (UUID V4):0
Nearest other occurrences of Chert
0.4km (0.2 miles) ⓘNeville Mine (Neville Reserve), Saint Louis County, Minnesota, USA
0.6km (0.4 miles) ⓘDouglas Mine, Saint Louis County, Minnesota, USA
0.7km (0.4 miles) ⓘDunwoody Mine, Saint Louis County, Minnesota, USA
0.8km (0.5 miles) ⓘNeville Reserve O-92, Saint Louis County, Minnesota, USA
0.8km (0.5 miles) ⓘU.S. Steel Reserve O-63 Prospect (U S Steel Corp; Trespass Shipments From Duncan Mine), Saint Louis County, Minnesota, USA
1.4km (0.9 miles) ⓘBruce Mine, Saint Louis County, Minnesota, USA
1.5km (0.9 miles) ⓘShenango Reserve O-93, Saint Louis County, Minnesota, USA
1.6km (1.0 miles) ⓘBruce Annex Mine (State of Minnesota), Saint Louis County, Minnesota, USA
1.8km (1.1 miles) ⓘTwin City Mine (U S Steel Corp; U S Steel Corp - Sherman Group), Saint Louis County, Minnesota, USA
1.8km (1.1 miles) ⓘMonroe-Tener Mine (Tener Mine), Saint Louis County, Minnesota, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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