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
Flatrock Quarry (Flat Rock Quarry; Crystal Mall), Waterford, 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 Flatrock Quarry (Flat Rock Quarry; Crystal Mall), Waterford, New London County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720305
Long-form Identifier:1:3:720305:3
GUID (UUID V4):0
Nearest other occurrences of Oligoclase
17.1km (10.6 miles) ⓘMacCurdy Quarry, Old Lyme, New London County, Connecticut, USA
25.6km (15.9 miles) ⓘWhite Rock Quarry, Westerly, Washington County, Rhode Island, USA
28.0km (17.4 miles) ⓘRedstone Granite Quarry (Cherenzia Quarry), Westerly, Washington County, Rhode Island, USA
33.3km (20.7 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
33.3km (20.7 miles) ⓘState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA
33.5km (20.8 miles) ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
33.8km (21.0 miles) ⓘHill above the parsonage (unnamed feldspar quarry), Haddam, Middlesex County, Connecticut, USA
33.8km (21.0 miles) ⓘChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
34.0km (21.2 miles) ⓘSullivan Quarry (Armetta Quarry; Copar Quarry; Westerly Granite Co. Quarry), Bradford, Westerly, Washington County, Rhode Island, USA
34.3km (21.3 miles) ⓘCrumb Granite Quarry, Bradford, 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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