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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Tourmaline from
Worth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Comments:A minor accessory in the pegmatites, not stated in the reference but probably black schorl.
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Worth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:657152
Long-form Identifier:1:3:657152:8
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
2.2km (1.4 miles) ⓘAmphibole-tourmaline-magnetite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
2.3km (1.4 miles) ⓘHaddam Neck, Haddam, Middlesex County, Connecticut, USA
4.4km (2.7 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
4.9km (3.1 miles) ⓘQuarry Hill (Brainerd Quarries; Shailor Quarries), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
5.6km (3.5 miles) ⓘGreat Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
5.7km (3.6 miles) ⓘTourmaline locality, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
6.4km (4.0 miles) ⓘLinkpot cut, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
6.6km (4.1 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
6.7km (4.1 miles) ⓘArnold Granite Quarry (General Brainerd Quarry; Great Hill Quarry; Hazelton Quarry; Haddam Quarry; Brookes Quarry), Haddam, Middlesex County, Connecticut, USA
6.8km (4.2 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
References
Cameron et al (1954)
Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569
 
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