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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Oligoclase from
MacCurdy Quarry, Old Lyme, New London County, Connecticut, USA


Locality type:Quarry
Classification
Species:Albite var: Oligoclase
Formula:(Na,Ca)[Al(Si,Al)Si2O8]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Oligoclase data
Locality Data:Click here to view MacCurdy Quarry, Old Lyme, New London County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720283
Long-form Identifier:1:3:720283:4
GUID (UUID V4):0
Nearest other occurrences of Oligoclase
17.1km (10.6 miles) ⓘFlatrock Quarry (Flat Rock Quarry; Crystal Mall), Waterford, New London County, Connecticut, USA
23.4km (14.6 miles) ⓘState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA
24.3km (15.1 miles) ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
25.1km (15.6 miles) ⓘHill above the parsonage (unnamed feldspar quarry), Haddam, Middlesex County, Connecticut, USA
25.3km (15.7 miles) ⓘChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
25.6km (15.9 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
32.5km (20.2 miles) ⓘLinkpot cut, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
34.7km (21.6 miles) ⓘStony Creek Quarry (Norcross Granite Gneiss Rock Quarries; Castellucci Quarry), Branford, New Haven County, Connecticut, USA
38.5km (23.9 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
42.3km (26.3 miles) ⓘWhite Rock Quarry, Westerly, Washington County, Rhode Island, USA
References
Dale, T. Nelson; Gregory Herbert E. (1911) The granites of Connecticut. Bulletin 484. US Geological Survey doi:10.3133/b484
 
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