GEOLOGICAL AND MINERALOGICAL NOTES. 93 



Appended is a list of new and rare minerals found in 

 Essex County. 



Xanthosiderite from Kockport, analyzed at Massachu- 

 setts Institute of Technology. 



Turgite from Beverly Farms, analyzed at Massachusetts 

 Institute of Technology. 



Wad Bog Manganese from Peabody and Danvers, ana- 

 lyzed at Massachusetts Institute of Technology. 



Glassy crystals of albite, Gloucester, analyzed by Mr. 

 Whittle, Cambridge. 



Ankerite from Grloucester. 



Pierosmine, Piorolite, Baltimoreite from Newbury. 



Crystal of quartz, a pseudomorph of fluorite, Rockport. 



Molybdenite from Gloucester. 



Galenite from Eockport. 



Delessite from Bradford. 



Arkose from Saugus. 



Arsenophyorite from Salisbury Point. 



ESSEX INST. BULLETIN, VOL. XXI 7 



