43 



MICA GR UP.— Continued. 



Muscovite. — continued. 



Dark green ciystals. 



Loc, Vesuvius. 



Obs., presented by Mr. G. C. Fox. 

 Do. Large six-sided crystal. 



Loc, The Phosphorite deposits, Canada. 



Obs., presented by Mr. J. H. CoUins. 

 BioTiTE. — Large black Mass. 



Loc, Vesuvius. 



Obs., presented by Mr. G. C. Fox. 



Do. Dark crystals in white felspar. 

 Loc, Rio de Janeiro. 



RuBELLANE. — Reddish-yellow confused mass. 



Do. Red crystals in lava. 



Do. Brilliant red crystals. 



Lepidolite. — Pearly scales in granite. 



Do. Peach-colored scaly mass. 

 Loc, Moravia. 



Do. Small crystals in el van. 

 Loc, Kynance Cove. 



Do. Large crystal in Quartz. 

 Loc, Rio de Janeiro. 



Do. Pearly white crystals in granite. 

 Loc, Ireland. 



GiLBERTiTE. — Pale yellowish-green scales. 

 Loc, Stenna Gwynn. 



Pyrophyllite. — Large mass of white crystals. 

 Loc, Brookwood Mine, Devon. 



Do, Red radiated mass. 



Loc, Mount Titanium, U.S.A. 



RiPiDOLiTE. — Large green plate. 



Do. Fine embedded plates. 



Loc, Cumberland, Rhode Island, U.S.A. 



Pennine. — Bright green crystal. 



Loc, Findelengletschen. 



