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Triploidite from
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA

Locality type:Quarry
Classification
Species:Triploidite
Formula:(Mn2+,Fe2+)2(PO4)(OH)
Comments:mostly columnar, fibrous, radiating, rare isolated but typically vitreous and transparent crystals to a length of an inch or more. Associated with quartz and the other Mn phosphates and rhododchrosite.
Habit:divergent to parallel-fibrous to columnar crystalline aggregates, compact, massive. rarely prismatic
Colour:yellowish to reddish-brown, topaz- to wine-yellow, hyacinth-red
Quality for species:Good crystals or rich for species - important (!)
Confirmation
Validity:Valid - Type Locality
References
References:Brush and Dana (1878); Shainin (1946): American Mineralogist 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, 855, 938.; Rocks & Minerals (1995) 70:396-409
Associated Minerals:
Associates:Dickinsonite-(KMnNa)
Eosphorite
Fillowite
Lithiophilite
Natrophilite
Reddingite
Rhodochrosite
Associated Minerals Based on Photo Data:
Dickinsonite-(KMnNa)4 photos of Triploidite associated with Dickinsonite-(KMnNa) at this locality.
Lithiophilite1 photo of Triploidite associated with Lithiophilite at this locality.
Data
Mineral Data:Click here to view Triploidite data
Locality Data:Click here to view Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA
Photo GalleryView Gallery (4 photos)
 
Mineral and/or Locality  
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