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


Locality type:Quarry
Classification
Species:Quartz var: Smoky Quartz
Formula:SiO2
Habit:massive, anhedral
Colour:pale gray to black
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Extremely common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Smoky Quartz 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:670271
Long-form Identifier:1:3:670271:7
GUID (UUID V4):0
Nearest other occurrences of Smoky Quartz
0.5km (0.3 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
0.9km (0.6 miles) ⓘThe Feldspar Corp. Quarry, White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
3.2km (2.0 miles) ⓘPegmatite prospects, Collins Hill, Portland, 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
4.4km (2.7 miles) ⓘDripps Road, Middletown, 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
7.0km (4.3 miles) ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA
7.5km (4.7 miles) ⓘGotta-Wannerstrom Quarry, Portland, Middlesex County, Connecticut, USA
References
Moritz, Harold (n.d.) Personal Communication.
 
and/or  
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