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
Chandlers Mill Quarry, Newport, Sullivan County, New Hampshire, USA


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:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Chandlers Mill Quarry, Newport, Sullivan County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:32303
Long-form Identifier:1:3:32303:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.9km (1.8 miles) ⓘSargent Mine, Claremont, Sullivan County, New Hampshire, USA
18.9km (11.8 miles) ⓘAscutney Mountain complex, Windsor County, Vermont, USA
19.9km (12.4 miles) ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA
20.9km (13.0 miles) ⓘPine Hill Quarry, Weathersfield, Windsor County, Vermont, USA
22.0km (13.7 miles) ⓘYuhas No. 1 Quarry, Acworth, Sullivan County, New Hampshire, USA
22.2km (13.8 miles) ⓘYuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
22.7km (14.1 miles) ⓘColony Quarry, Alstead, Cheshire County, New Hampshire, USA
23.1km (14.3 miles) ⓘProvencher Quarry, Alstead, Cheshire County, New Hampshire, USA
23.6km (14.6 miles) ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA
23.9km (14.9 miles) ⓘFitzgibbons Mine, Alstead, Cheshire County, New Hampshire, USA
References
 
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