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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Gypsum from
Barrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven County, Connecticut, USA


Locality type:Quarry
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Barrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:436282
Long-form Identifier:1:3:436282:1
GUID (UUID V4):0
Nearest other occurrences of Gypsum
15.3km (9.5 miles) ⓘProgress Lane construction site, Waterbury, New Haven County, Connecticut, USA
16.0km (9.9 miles) ⓘO & G Southbury Quarry (Silliman Quarry; O & G No. 2 Quarry), Orenaug Hills, Woodbury, Litchfield County, Connecticut, USA
16.6km (10.3 miles) ⓘCheshire Traprock Quarry, Cheshire, New Haven County, Connecticut, USA
19.2km (11.9 miles) ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
19.2km (12.0 miles) ⓘOld Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
19.8km (12.3 miles) ⓘState Route 111 road cuts, Long Hill, Trumbull, Fairfield County, Connecticut, USA
21.5km (13.4 miles) ⓘGreen's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA
21.7km (13.5 miles) ⓘCinque Quarry, East Haven, New Haven County, Connecticut, USA
23.9km (14.8 miles) ⓘSky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA
25.2km (15.7 miles) ⓘWaterbury Road quarry, Thomaston, Litchfield County, Connecticut, USA
References
Specimens collected by Jeremy Zolan in Feb., 2006
 
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