Localities of Minerals. 247 



3. Black Filiate of Lime, in Huron county, Ohio. 



4. Gibhsite, of Torrey, on iron ore, at Lenox. Emmons. 



5. Limpid Quartz, at Newport, N. Y. ninety-five miles 

 north-west of Albany. The crystals are perfectly transpa- 

 rent, and terminated by pyramids at both extremities. The 

 largest that I have been able to procure is about an inch 

 long and about three fourths of an inch in diameter. These 

 specimens, together with those from Fairfield, which exact- 

 ly resemble them, are the most beautiful rock crystals that I 

 have ever seen. 



6. Blue Quartz, in amorphous masses, at Cummington, 

 Bridgewater, Pembroke and Marshfield. 



7. Rose Quartz, beautiful, and in considerable quantities, 

 in a ledge at the east part of Chesterfield. 



8. Irised Quartz, in large quantities, at Chesterfield. Its 

 colors, which are generally red, yellow or orange, and very 

 delicate, seem to arise from a thin coat of metallic oxid on 

 the surface of the specimen, or in its fissures. 



9. Milky Quartz, at Abington, the cavities frequently 

 lined with crystals. 



10. Greasy Quartz, at Plainfield. 



11. Arenaceous Quartz, at Plainfield and Cummington, 

 ofte < in large masses. It is sometimes burnt and pulverised 

 for s.)nd. 



12. Stnlactical Quartz, at some falls in a brook in Middle- 

 field. The crystals, which are small and have a slight 

 tinge of red, are formed on serpentine, evidently in a man- 

 ner similar to that of stalactites. The specimens are singu- 

 larly beautiful. Emmons 



13. Amethyst, a single crystal of a delicate purple, dis- 

 covered at Abington. 



14. Fetid Quartz, at Cummington. 



15. Chalcedony, at Middlefield. It is of a milky or red- 

 dish color, with blood-red spots. The cavities are lined 

 with the most minute and beautiful crystals, which are 

 sometimes blood-red, but generally white or bluish. Em- 

 mons. 



16. Opal, at Middlefield. It is covered with small crys- 

 tals, whose color is white, slightly tinged with blue or yel- 

 low. Emmons. 



17. Hornstone, at Middlefield. Emmons, 



