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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Calcite from
Joshua Rock Quarry, Lyme, New London County, Connecticut, USA


Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Joshua Rock Quarry, Lyme, New London County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720270
Long-form Identifier:1:3:720270:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
9.0km (5.6 miles) ⓘMacCurdy Quarry, Old Lyme, New London County, Connecticut, USA
14.0km (8.7 miles) ⓘState Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA
15.1km (9.4 miles) ⓘJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA
16.1km (10.0 miles) ⓘHazen quarry (Epidote locality), Haddam, Middlesex County, Connecticut, USA
16.7km (10.4 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
18.0km (11.2 miles) ⓘState Route 9 and State Route 81 Interchange, Higganum, Haddam, Middlesex County, Connecticut, USA
25.8km (16.0 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
27.8km (17.3 miles) ⓘMiddletown lead mines (Middletown Mine), Middletown, Middlesex County, Connecticut, USA
29.6km (18.4 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
29.6km (18.4 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, 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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