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Spessartine from
Case Quarries, Portland, Middlesex Co., Connecticut, USA

Mineral Species
Species:Spessartine
Formula:Mn2+3Al2(SiO4)3
Description
Comments:XRF analyses of many Middletown district pegmatites shows the majority to be almandine, though with significant spessartine component. No analyses verifying a spessartine from Case is documented.
Quality of samples:not specified / average specimens
Confirmation
Validity:Unconfirmed/Questioned
References
References: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; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut.
Data
Mineral Data:Click here to view Spessartine data
Locality Data:Click here to view Case Quarries, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Spessartine
1.5km (1.0 miles) A Walden Gem Quarry, Portland, Middlesex Co., Connecticut, USA
1.9km (1.2 miles) B Simpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
2.7km (1.7 miles) C Pelton's Quarry, Portland, Middlesex Co., Connecticut, USA
3.3km (2.1 miles) D Chamberlain Lane, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
4.8km (3.0 miles) E Nathan Hall Quarry (Clark Hill Quarry), East Hampton (Chatham), Middlesex Co., Connecticut, USA
5.9km (3.7 miles) F Brack Gem prospect (Brack prospect), East Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
7.4km (4.6 miles) G Paxton Way, Glastonbury, Hartford Co., Connecticut, USA
13.0km (8.1 miles) H Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA
16.6km (10.3 miles) I Chrysoberyl locality, Haddam, Middlesex Co., Connecticut, USA
18.0km (11.2 miles) J Jail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex Co., Connecticut, USA
20.0km (12.4 miles) K Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex Co., Connecticut, USA
69.2km (43.0 miles) L Captain Cook's Quarry (Purdy Station Quarry), Newtown, Fairfield Co., Connecticut, USA
101.2km (62.9 miles) M Betts Manganese Mines (Anson Betts Mine; Plainfield Manganese Mines), Plainfield, Hampshire Co., Massachusetts, USA
115.8km (72.0 miles) N Interstate 290/Interstate 495 interchange road cuts, Marlborough, Middlesex Co., Massachusetts, USA
142.4km (88.5 miles) O Washington Heights, Manhattan Island, Manhattan (New York Co.), New York City, New York, USA
Mineral and/or Locality  
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