Locality: Chickering Mine, Walpole, NH
Specimen Size: 6 cm specimen with triphylite (blue), heterosite (purple) and ferrisicklerite (brown)
Field Collected: Tom Mortimer
Catalog No.:
Notes: This specimen nicely illustrates the alteration of triphylite to ferrisicklerite and ferrisicklerite to heterosite.
Locality: Chickering Mine, Walpole, NH
Specimen Size: 8 cm massive blue triphylite specimen with included mica
Field Collected: Tom Mortimer (Oct. 2010)
Catalog No.:
Notes: Triphylite is the predominant primary phosphate at the Chickering Mine. The blue triphylite on the freshly broken surface sharply contrasts with the surface exposed to years of weathering on the mine dump. The brown zone in the top right has altered to ferrisicklerite.