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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Graphite from
Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Graphite
Formula:C
Comments:Minor component of the host metamorphic rocks.
Habit:anhedral
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Graphite data
Locality Data:Click here to view Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:96202
Long-form Identifier:1:3:96202:9
GUID (UUID V4):0
Nearest other occurrences of Graphite
8.1km (5.0 miles) ⓘBishop Hill Schorl Locality, East Hampton, Middlesex County, Connecticut, USA
8.1km (5.1 miles) ⓘ"Foothold Cleft", Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
11.0km (6.8 miles) ⓘHaddam Neck, Haddam, Middlesex County, Connecticut, USA
12.4km (7.7 miles) ⓘGraphite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
13.0km (8.1 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
30.7km (19.1 miles) ⓘInterstate 84 interchange 26, Cheshire, New Haven County, Connecticut, USA
39.5km (24.5 miles) ⓘState Route 8 interchange 34 (formerly 37), Watertown, Litchfield County, Connecticut, USA
40.8km (25.3 miles) ⓘWaterbury Road quarry, Thomaston, Litchfield County, Connecticut, USA
40.8km (25.4 miles) ⓘBecker Quarry, Willington, Tolland County, Connecticut, USA
41.0km (25.5 miles) ⓘReynolds Bridge, Thomaston, Litchfield County, Connecticut, USA
References
Ralph Lieser of Pappy’s Beryl Shop, East Hampton
and Howard Pate of Fluorescent House, Branford, Connecticut.
Schooner, Richard. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner
 
and/or  
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