Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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Biotite from
Dundee Falls Kyanite locality, Gorham, Cumberland County, Maine, USA


Locality type:Deposit
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
Associated Minerals Based on Photo Data:
Kyanite2
Quartz2
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Dundee Falls Kyanite locality, Gorham, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:690190
Long-form Identifier:1:3:690190:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.2km (1.4 miles) ⓘCook Road Staurolite locality, Windham, Cumberland County, Maine, USA
3.7km (2.3 miles) ⓘGambo Falls Staurolite locality, Gorham, Cumberland County, Maine, USA
6.2km (3.8 miles) ⓘMallison Falls, Windham, Cumberland County, Maine, USA
24.9km (15.5 miles) ⓘHeath Quarry, Casco, Cumberland County, Maine, USA
25.7km (16.0 miles) ⓘTryon Mountain Quarries, Pownal, Cumberland County, Maine, USA
29.3km (18.2 miles) ⓘPorter Landing prospects, Freeport, Cumberland County, Maine, USA
34.9km (21.7 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
35.1km (21.8 miles) ⓘLaChance Quarry, Brunswick, Cumberland County, Maine, USA
35.5km (22.1 miles) ⓘSymmes Pond Syenite, Straw Hill occurrence, Newfield, York County, Maine, USA
36.5km (22.7 miles) ⓘTurner Quarries, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
References
King, Van (n.d.) Personal communcation.
 
and/or  
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