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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Uraninite from
Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Uraninite
Formula:UO2
Comments:Usually tiny grains, altered and surrounded by halos of secondary minerals.
Habit:crude octahedrons or blebs
Colour:black
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Uraninite data
Locality Data:Click here to view Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:670281
Long-form Identifier:1:3:670281:6
GUID (UUID V4):0
Nearest other occurrences of Uraninite
0.5km (0.3 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
2.8km (1.8 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
4.0km (2.5 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
4.0km (2.5 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
5.3km (3.3 miles) ⓘPelton's Quarry, Portland, Middlesex County, Connecticut, USA
6.6km (4.1 miles) ⓘNathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA
6.7km (4.2 miles) ⓘState Forest Quarry No. 1, East Hampton, Middlesex County, Connecticut, USA
6.8km (4.2 miles) ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA
7.0km (4.3 miles) ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA
7.2km (4.5 miles) ⓘBordonaro Quarry, Portland, Middlesex County, Connecticut, USA
References
Moritz, Harold (n.d.) Personal Communication.
 
and/or  
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