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Dickinsonite-(KMnNa) from
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Town of Ridgefield, Fairfield Co., Connecticut, USA

Description
Type Locality:	Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Town of Ridgefield, Fairfield Co., Connecticut, USA is the type locality for Dickinsonite-(KMnNa)
Comments:	Intimately associated with quartz, eosphorite, triploidite and rhodochrosite
Habit:	foliated crystalline masses, almost micaceous, radiating or stellated curved laminae
Colour:	oil to olive green, dark to grass-green
Quality of samples:	Good crystals or rich for species - important (!)
Rarity at site:	Rare
Confirmation
Validity:	Confirmed
Confirmation Methods:	Wet Chemical
References
References:	Brush and Dana (1878); American Mineralogist (1946): 31: 329-345; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 671, 718, 855.; Rocks & Minerals (1995) 70:396-409
Associated minerals:
Associates:	Eosphorite Fairfieldite Hureaulite Lithiophilite Natrophilite Reddingite Rhodochrosite Triploidite
Data
Mineral Data:	Click here to view Dickinsonite-(KMnNa) data
Locality Data:	Click here to view Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Town of Ridgefield, Fairfield Co., Connecticut, USA
Photo Gallery	View Gallery (3 photos)

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