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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Biotite from
Little Laurel Lime Park, Seymour, New Haven County, Connecticut, USA


Locality type:Quarry
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Little Laurel Lime Park, Seymour, New Haven County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:854948
Long-form Identifier:1:3:854948:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
4.4km (2.8 miles) ⓘArsenic and nickel mine (Nickel Mine Brook), Seymour, New Haven County, Connecticut, USA
9.7km (6.1 miles) ⓘNew England Materials quarry, Monroe, Fairfield County, Connecticut, USA
10.5km (6.5 miles) ⓘCorporate Drive, Long Hill, Trumbull, Fairfield County, Connecticut, USA
11.0km (6.8 miles) ⓘCurtis Quarry, Southford, Southbury, New Haven County, Connecticut, USA
11.0km (6.9 miles) ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
22.0km (13.7 miles) ⓘGreen's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA
23.1km (14.4 miles) ⓘRedding Glen, Redding, Fairfield County, Connecticut, USA
23.5km (14.6 miles) ⓘNonnewaug River Industrial Park, Woodbury, Litchfield County, Connecticut, USA
23.6km (14.7 miles) ⓘProgress Lane construction site, Waterbury, New Haven County, Connecticut, USA
24.4km (15.2 miles) ⓘU. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
References
J. Zolan field observation
 
and/or  
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