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Sillimanite from
US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA


05321420017367498075696.jpg
Sillimanite, etc.

US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA
05321420017367498075696.jpg
Sillimanite, etc.

US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA
03803000017367498122958.jpg
Sillimanite, etc.

US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA
Locality type:Road Cutting
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Comments:Crystals to 7 cm in subparallel alignment in quartz-rich segregations, just like at Chester, Norwich and Willimantic - all from exposures of the Tatnic Hill Formation.
Habit:elongated prisms
Colour:brown
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Quartz1
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:1015774
Long-form Identifier:1:3:1015774:1
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
4.4km (2.7 miles) ⓘWillimantic, Windham, Windham County, Connecticut, USA
16.6km (10.3 miles) ⓘBecker Quarry, Willington, Tolland County, Connecticut, USA
22.1km (13.7 miles) ⓘSunset Quartzite Quarry, East Glastonbury, Glastonbury, Hartford County, Connecticut, USA
22.6km (14.0 miles) ⓘWestchester, Colchester, New London County, Connecticut, USA
24.1km (15.0 miles) ⓘLinkpot cut, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
25.9km (16.1 miles) ⓘFalls of the Yantic River, Norwich, New London County, Connecticut, USA
28.4km (17.6 miles) ⓘGreat Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
30.8km (19.2 miles) ⓘDimension stone quarry, Collins Hill, Portland, Middlesex County, Connecticut, USA
31.2km (19.4 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
31.9km (19.8 miles) ⓘCordierite locality (Bigelow Pond), Union, Tolland County, Connecticut, USA
References
Wesleyan University collection
 
and/or  
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