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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Schorl from
Biermann Quarries (Bethel quarries; Codfish Hill Quarry), Bethel, Fairfield County, Connecticut, USA


07329190017272024829680.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
05402420017272024756745.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
09625240017272024868970.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
06654720017502584616956.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
00415740017503861101467.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
04457290017503861094435.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
06539240017503861106408.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
00431530017503861118628.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
03183240017361080562971.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
05402420017272024756745.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
03876830017502584628688.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
06654720017502584616956.jpg
Schorl, etc.

Biermann Quarries, Bethel, Fairfield County, Connecticut, USA
Locality type:Quarry
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Formation:Primary
Comments:An accessory mineral in the pegmatite, crystals up to 3 feet long and commonly tapered along their long axis. Many are partly or completely altered to muscovite.
Habit:elongated trigonal prismatic
Colour:black
Abundance at site:Common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Muscovite6
Albite2
Quartz2
Uraninite1
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Biermann Quarries (Bethel quarries; Codfish Hill Quarry), Bethel, Fairfield County, Connecticut, USA
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:37845
Long-form Identifier:1:3:37845:1
GUID (UUID V4):0
Nearest other occurrences of Schorl
1.7km (1.1 miles) ⓘCaptain Cook's Quarry (Purdy Station Quarry), Newtown, Fairfield County, Connecticut, USA
7.6km (4.7 miles) ⓘRedding Glen, Redding, Fairfield County, Connecticut, USA
9.1km (5.7 miles) ⓘDanbury beryl prospect, Brookfield, Fairfield County, Connecticut, USA
11.4km (7.1 miles) ⓘU. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
12.1km (7.5 miles) ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
12.2km (7.6 miles) ⓘOld Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
12.6km (7.8 miles) ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
12.8km (8.0 miles) ⓘWestern Connecticut State University, Danbury, Fairfield County, Connecticut, USA
14.4km (8.9 miles) ⓘTiticus Mica Quarry, Ridgefield, Fairfield County, Connecticut, USA
15.1km (9.4 miles) ⓘSchorl locality, Wilton, Fairfield County, Connecticut, USA
References
Todd, Charles Burr. (1906), In Olde Connecticut.
 
and/or  
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