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Heterosite from
State Forest Quarry #2 (State Forest No. 2 Mica Mine), Cobalt, East Hampton (Chatham), Middlesex Co., Connecticut, USA

Classification
Species:Heterosite
Formula:(Fe3+,Mn3+)PO4
Comments:alteration of triphylite associated with ferrisicklerite
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
References
References:Schooner (1958); Januzzi (1976) p. 234.
Data
Mineral Data:Click here to view Heterosite data
Locality Data:Click here to view State Forest Quarry #2 (State Forest No. 2 Mica Mine), Cobalt, East Hampton (Chatham), Middlesex Co., Connecticut, USA
Nearest other occurrences of Heterosite
7.2km (4.5 miles) Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex Co., Connecticut, USA
7.5km (4.6 miles) Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex Co., Connecticut, USA
51.0km (31.7 miles) State Route 8 and State Route 118 interchange, Harwinton, Litchfield Co., Connecticut, USA
74.6km (46.4 miles) Blandford mica mines, Blandford, Hampden Co., Massachusetts, USA
81.4km (50.6 miles) Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA
 
Mineral and/or Locality  
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