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
Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA


00813790017272022967000.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
08943810017370945135095.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
05136920017370945132933.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
00813790017272022967000.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
04123260017369358579163.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
08346510017369358564368.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
00813790017272022967000.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
08943810017370945135095.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
05136920017370945132933.jpg
Biotite, etc.

Yuhas No. 2 Quarry, Acworth, 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:Believed Valid
Associated Minerals Based on Photo Data:
Uraninite3
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Yuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:32428
Long-form Identifier:1:3:32428:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.3km (0.2 miles) ⓘYuhas No. 1 Quarry, Acworth, Sullivan County, New Hampshire, USA
0.6km (0.4 miles) ⓘColony Quarry, Alstead, Cheshire County, New Hampshire, USA
2.0km (1.3 miles) ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA
2.9km (1.8 miles) ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA
3.4km (2.1 miles) ⓘProvencher Quarry, Alstead, Cheshire County, New Hampshire, USA
3.7km (2.3 miles) ⓘGeorge Porter Quarry, Alstead, Cheshire County, New Hampshire, USA
4.2km (2.6 miles) ⓘFitzgibbons Mine, Alstead, Cheshire County, New Hampshire, USA
8.3km (5.1 miles) ⓘBritton Quarry, Alstead, Cheshire County, New Hampshire, USA
9.6km (6.0 miles) ⓘBig Mine, Alstead, Cheshire County, New Hampshire, USA
10.6km (6.6 miles) ⓘBellows Falls, Rockingham, Windham County, Vermont, USA
References
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
 
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