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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Marcasite from
Starkey Mine, Madison County, Missouri, USA


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Starkey Mine, Madison County, Missouri, USA
Data Identifiers
Mindat Occurrence Record ID:208449
Long-form Identifier:1:3:208449:7
GUID (UUID V4):0
Nearest other occurrences of Marcasite
4.6km (2.9 miles) ⓘFord Mine (Ford Bank), Madison County, Missouri, USA
10.0km (6.2 miles) ⓘUnited States Strategic Metals, Fredericktown, Fredericktown Mining District, Madison County, Missouri, USA
14.6km (9.1 miles) ⓘHigdon mine, Perry County, Missouri, USA
14.9km (9.2 miles) ⓘMine La Motte, Mine La Motte, Fredericktown Mining District, Madison County, Missouri, USA
17.4km (10.8 miles) ⓘCatherine Mine, Fredericktown, Fredericktown Mining District, Madison County, Missouri, USA
26.5km (16.5 miles) ⓘSilver Mine, Fredericktown Mining District, Madison County, Missouri, USA
31.7km (19.7 miles) ⓘLambert Mine, Wayne County, Missouri, USA
33.3km (20.7 miles) ⓘLilly Hollow Mine, Wayne County, Missouri, USA
34.4km (21.4 miles) ⓘLong and Colby Bank, Wayne County, Missouri, USA
35.8km (22.2 miles) ⓘR.White Mine, Wayne County, Missouri, USA
References
Am Min 41:662
Sherwood, Mark D., Williams, Glenn A. (1998) Missouri Mineral Locality Index. Rocks & Minerals, 73 (2) 98-117 doi:10.1080/00357529809603046
 
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