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
Jackson Falls, Jackson, Carroll County, New Hampshire, USA


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 Jackson Falls, Jackson, Carroll County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:157136
Long-form Identifier:1:3:157136:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.7km (1.0 miles) ⓘJackson tin mines, Jackson, Carroll County, New Hampshire, USA
5.2km (3.2 miles) ⓘIron Mountain Mines, Iron Mountain, Bartlett, Carroll County, New Hampshire, USA
12.1km (7.5 miles) ⓘNorth Moat Mountain localities, Bartlett, Carroll County, New Hampshire, USA
14.7km (9.2 miles) ⓘRedstone "Green Granite" quarry, Redstone, Conway, Carroll County, New Hampshire, USA
15.8km (9.8 miles) ⓘRedstone "Red Granite" quarry, Redstone, Conway, Carroll County, New Hampshire, USA
16.2km (10.1 miles) ⓘGovernment pit, Albany, Carroll County, New Hampshire, USA
17.0km (10.6 miles) ⓘLovejoy Gravel pits, Conway, Carroll County, New Hampshire, USA
17.1km (10.6 miles) ⓘMillard Chandler Mine, Chatham, Carroll County, New Hampshire, USA
17.4km (10.8 miles) ⓘLittle Deer Hill prospect, Stow, Oxford County, Maine, USA
18.2km (11.3 miles) ⓘDeer Hill, Stow, Oxford County, Maine, USA
References
www.bates.edu/acad/depts/geology/jcreasy.WM.html.
 
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