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
Jacobson Meadows Occurrence, Pioneer Mining District, Beaverhead County, Montana, USA


Locality type:Occurrence
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 Jacobson Meadows Occurrence, Pioneer Mining District, Beaverhead County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:498640
Long-form Identifier:1:3:498640:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
6.7km (4.2 miles) ⓘCrystal Park Occurrence (Hot Springs Creek; Price Creek), Pioneer Mining District, Beaverhead County, Montana, USA
37.1km (23.0 miles) ⓘCalvert Mine (Calvert Hill Mine; Calvert Tungsten Mine; Red Button Mine), Calvert Hill Mining District, Beaverhead County, Montana, USA
60.7km (37.7 miles) ⓘHungry Hill Mine (Jerry Hurley Property; Mountain View), Eldorado Mining District (Geertson Mining District), Lemhi County, Idaho, USA
62.2km (38.6 miles) ⓘCamp Creek Corundum Occurrence, Beaverhead County, Montana, USA
65.6km (40.7 miles) ⓘPohndorf Mine, Toll Mountain, Boulder Batholith, Jefferson County, Montana, USA
67.6km (42.0 miles) ⓘSteward Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
68.5km (42.5 miles) ⓘSparky Prospect, McDevitt Mining District, Lemhi County, Idaho, USA
68.5km (42.6 miles) ⓘLexington Mine, Walkerville, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
68.9km (42.8 miles) ⓘAltona Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
68.9km (42.8 miles) ⓘLucky Horseshoe Claim Group, McDevitt Mining District, Lemhi County, Idaho, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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