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


Locality type:Quarry
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Comments:Foye (1922): "found within the Bolton [Collins Hill] schist a few centimeters from its contact with the pegmatite".
Abundance at site:Extremely Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:96190
Long-form Identifier:1:3:96190:5
GUID (UUID V4):0
Nearest other occurrences of Cordierite
0.1km (0.1 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
3.8km (2.3 miles) ⓘCase Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA
3.8km (2.3 miles) ⓘCase Quarries, Portland, Middlesex County, Connecticut, USA
3.8km (2.4 miles) ⓘGreat Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
10.2km (6.4 miles) ⓘAmphibole-tourmaline-magnetite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
12.8km (8.0 miles) ⓘThulite locality, Haddam, Middlesex County, Connecticut, USA
13.4km (8.4 miles) ⓘChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
14.7km (9.1 miles) ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
16.0km (10.0 miles) ⓘState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA
31.4km (19.5 miles) ⓘEast Main Street construction site, Waterbury, New Haven County, Connecticut, USA
References
Foye, Wilbur G. (1922) Mineral localities in the vicinity of Middletown, Connecticut. American Mineralogist, 7 (1) 4-12
 
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