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
State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA


Classification
Species:Calcite
Formula:CaCO3
Habit:anhedral
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:920662
Long-form Identifier:1:3:920662:5
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.9km (1.8 miles) ⓘJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA
3.4km (2.1 miles) ⓘHazen quarry (Epidote locality), Haddam, Middlesex County, Connecticut, USA
4.1km (2.5 miles) ⓘState Route 9 and State Route 81 Interchange, Higganum, Haddam, Middlesex County, Connecticut, USA
5.2km (3.3 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
12.2km (7.6 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
14.0km (8.7 miles) ⓘJoshua Rock Quarry, Lyme, New London County, Connecticut, USA
14.7km (9.1 miles) ⓘMiddletown lead mines (Middletown Mine), Middletown, Middlesex County, Connecticut, USA
17.3km (10.7 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
17.4km (10.8 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
17.8km (11.0 miles) ⓘReed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA
References
Lundgren, Lawrence Jr. (1979) The Bedrock Geology of the Haddam Quadrangle. Quadrangle Report 37.. State Geological and Natural History Survey of Connecticutp.37
 
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