Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Biotite from
Scout Patrol Peak, Hansen Creek area, Snoqualmie Mining District, King County, Washington, USA


Locality type:Mountain
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Comments:found in altered Snoqualmie granodiorite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Scout Patrol Peak, Hansen Creek area, Snoqualmie Mining District, King County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:46332
Long-form Identifier:1:3:46332:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
6.8km (4.2 miles) ⓘCarmack Mine, Snoqualmie Mining District, King County, Washington, USA
19.7km (12.2 miles) ⓘCondor-Hemlock Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
21.5km (13.3 miles) ⓘMineral Creek Mine (Durrwachter Mine; Liberty Lode Mine), Mineral Creek, Kittitas County, Washington, USA
23.8km (14.8 miles) ⓘRainy Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
30.3km (18.8 miles) ⓘSunday Lake Garnet Occurrence, Buena Vista Mining District, King County, Washington, USA
36.6km (22.8 miles) ⓘNorth Fork Copper Deposit, Buena Vista Mining District, King County, Washington, USA
44.2km (27.5 miles) ⓘPickwick Mine, Van Epps Pass, Leavenworth Mining District, Chelan County, Washington, USA
49.4km (30.7 miles) ⓘBarclay Creek Skarn, Index Mining District, Snohomish County, Washington, USA
52.2km (32.4 miles) ⓘGunn Peak Prospect, Bitter Creek, Index Mining District, Snohomish County, Washington, USA
60.8km (37.8 miles) ⓘSultan Canyon, Sultan Mining District, Snohomish County, Washington, USA
References
Micro Probe Volume VI Number 8
 
and/or  
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