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Pyrolusite from
Ridgefield, Fairfield County, Connecticut, USA

Classification
Species:Pyrolusite
Formula:Mn4+O2
Comments:No pyrolusite dendrite or staining in a granite pegmatite in the world has been verified as pyrolusite. The name was a mistake in the nineteenth century which has been widely publicized.
Confirmation
Validity:Erroneously Reported
References
References:Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Ridgefield, Fairfield County, Connecticut, USA
Nearest other occurrences of Pyrolusite
5.2km (3.2 miles) Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA
14.8km (9.2 miles) Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield County, Connecticut, USA
14.9km (9.3 miles) Bedford, Westchester Co., New York, USA
14.9km (9.3 miles) Baylis Quarry (Bayliss Quarry), Bedford, Westchester Co., New York, USA
15.0km (9.3 miles) Interstate 84 road cuts, Brewster, Southeast Township, Putnam Co., New York, USA
22.4km (13.9 miles) Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
22.7km (14.1 miles) Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
33.1km (20.6 miles) Ossining (Sing Sing), Westchester Co., New York, USA
39.5km (24.5 miles) Lake Street Quarry, Harrison, Westchester Co., New York, USA
42.0km (26.1 miles) New England Mining Company Quarry (Roebling Mine; Hewitt's Mine), Upper Merryall, New Milford, Litchfield Co., Connecticut, USA
 
Mineral and/or Locality  
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