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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Corundum from
State Route 372 construction site, Plainville, Hartford County, Connecticut, USA


Locality type:Construction Site
Classification
Species:Corundum
Formula:Al2O3
Comments:Very doubtful this mineral occurs in this tholeiitic basalt. Corundum may occur in relatively rare alkali basalts, but that rock type is not present in Connecticut.
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Corundum data
Locality Data:Click here to view State Route 372 construction site, Plainville, Hartford County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:730348
Long-form Identifier:1:3:730348:7
GUID (UUID V4):0
Nearest other occurrences of Corundum
41.9km (26.0 miles) ⓘQuartz mine (Judd's Bridge kyanite locality), Washington, Litchfield County, Connecticut, USA
44.7km (27.8 miles) ⓘBerry Road kyanite locality, Roxbury, Litchfield County, Connecticut, USA
47.1km (29.3 miles) ⓘInterstate 84 road cuts (Route 6A bypass), Newtown, Fairfield County, Connecticut, USA
64.7km (40.2 miles) ⓘFalls of the Yantic River, Norwich, New London County, Connecticut, USA
66.5km (41.3 miles) ⓘMelvin Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA
66.8km (41.5 miles) ⓘWright Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA
67.2km (41.7 miles) ⓘChester Emery Mines, Chester, Hampden County, Massachusetts, USA
67.9km (42.2 miles) ⓘOld Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA
82.4km (51.2 miles) ⓘPelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA
83.9km (52.1 miles) ⓘWest Thompson Dam, West Thompson, Thompson, Windham County, Connecticut, USA
References
Shepard Collection
 
and/or  
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