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Dickinsonite-(KMnNa) from
Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA

Locality type:Quarry
Classification
Species:Dickinsonite-(KMnNa)
Formula:{KNa}{Mn2+◻}{Ca}{Na3}{Mn132+}{Al}(PO4)12(OH)2
Comments:Schooner (1955): "Little scales of the rare phosphate are seen on a few specimens."
Habit:flakes, coating on altered lithiophilite
Colour:olive green
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Optical Analysis
References
References:Schairer, J. F. (1926): Lithiophilite and Other Rare Phosphates from Portland, Connecticut. American Mineralogist: 11(4): 101-104.; Schooner, Richard. (1955): 90 Minerals from 1 Connecticut Hill. Rocks & Minerals: 30(7-8): 351-8.
Associated Minerals:
Associates:Hureaulite
Lithiophilite
Data
Mineral Data:Click here to view Dickinsonite-(KMnNa) data
Locality Data:Click here to view Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Dickinsonite-(KMnNa)
68.7km (42.7 miles) U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
69.1km (43.0 miles) Brookfield, Fairfield County, Connecticut, USA
79.3km (49.3 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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