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
Markovice quarry, Žleby, Kutná Hora District, Central Bohemian Region, Czech Republic


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:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Markovice quarry, Žleby, Kutná Hora District, Central Bohemian Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:348323
Long-form Identifier:1:3:348323:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
6.0km (3.8 miles) ⓘPřibyslavice, Vlkaneč, Kutná Hora District, Central Bohemian Region, Czech Republic
11.7km (7.3 miles) ⓘNové Dvory eclogite outcrop, Nové Dvory, Kutná Hora District, Central Bohemian Region, Czech Republic
17.0km (10.5 miles) ⓘMalešov deposit, Malešov, Kutná Hora District, Central Bohemian Region, Czech Republic
21.8km (13.5 miles) ⓘJilem pegmatite locality, Jilem, Havlíčkův Brod District, Vysočina Region, Czech Republic
22.4km (13.9 miles) ⓘKřižanovice deposit, Křižanovice, Chrudim District, Pardubice Region, Czech Republic
27.2km (16.9 miles) ⓘNosatá skála pegmatite, Moldanubian Zone pegmatites, Vlastějovice, Kutná Hora District, Central Bohemian Region, Czech Republic
28.2km (17.5 miles) ⓘBřezina pegmatite, Moldanubian Zone pegmatites, Vlastějovice, Kutná Hora District, Central Bohemian Region, Czech Republic
32.7km (20.3 miles) ⓘKunětická hill, Ráby, Pardubice District, Pardubice Region, Czech Republic
35.6km (22.1 miles) ⓘKvasetice, Havlíčkův Brod District, Vysočina Region, Czech Republic
36.2km (22.5 miles) ⓘGranite quarry, Pohled, Havlíčkův Brod District, Vysočina Region, Czech Republic
References
Litochleb, J.: Markovice a Horky u Č
áslavi – klasické lokality zeolitů
v alpských žilách. Minerál, 1996, roč
. 4, č
. 2, s. 98-100.
 
and/or  
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