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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Staurolite from
U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA


Locality type:Road Cutting
Classification
Species:Staurolite
Formula:Fe22+Al9Si4O23(OH)
Comments:Included in a list of minerals without details, but plausible for the geology.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Staurolite data
Locality Data:Click here to view U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:656993
Long-form Identifier:1:3:656993:8
GUID (UUID V4):0
Nearest other occurrences of Staurolite
4.0km (2.5 miles) ⓘSky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA
8.2km (5.1 miles) ⓘBerry Road kyanite locality, Roxbury, Litchfield County, Connecticut, USA
9.4km (5.9 miles) ⓘInterstate 84 road cuts (Route 6A bypass), Newtown, Fairfield County, Connecticut, USA
9.9km (6.1 miles) ⓘGreen's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA
17.1km (10.7 miles) ⓘQuartz mine (Judd's Bridge kyanite locality), Washington, Litchfield County, Connecticut, USA
18.5km (11.5 miles) ⓘCurtis prospect, Redding Glen, Redding, Fairfield County, Connecticut, USA
20.7km (12.8 miles) ⓘTwin Bridges, Easton, Fairfield County, Connecticut, USA
20.7km (12.9 miles) ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
27.0km (16.8 miles) ⓘBarrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven County, Connecticut, USA
29.0km (18.0 miles) ⓘThe Cascades, Fairfield, Fairfield County, Connecticut, USA
References
Januzzi, Ronald. E. (1994) Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut, USA.
Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569
 
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