Catalogues of Rocks and Minerals,, 265 



Art. X. — Several other Catalogues of Rocks and Minerals 

 presented to the American Geological Society 



I. From Col. Gibbs* 



1 . Several magnificent specimens of the Granite of Ches- 

 terfield, with its tourmalins, red, green, blue, &c. 



2. Do. with its various coloured mica, straw, violet, red, 

 blue, &c. with imbedded tourmalins. 



3. Rose coloured mica detached, very beautiful, same 

 locality. 



4.* Brucite, crystallized in primitive limestone. Brucite 

 is said now to be the same mineral that is called by Pro- 

 fessor Berzelius Chondrodit. 



5. Haddam granite, with large crystals of chrysoberyl 

 imbedded — garnet in crystals of great size pervades the 

 mass. 



6. Do. with imbedded beryl, 5 inches by 3. 



7. Do. do. do. do. distinct and handsome, 4 

 inches by 1, with tourmalins. 



II. From James Pierce, Esq. 



8. Gray sandstone, Catskill mountains, the round top 

 exhibits rocks of this character. 



9. Dogtooth spar, Schuyler's mine, New-Jersey. 



10. Argillaceous schist, found under greenstone, We- 

 hawk, New-Jersey. 



11. White graphite in limestone, from the western base 

 of the Highlands, Hamburg, New-Jersey. 



12. Sulphate of iron, Morris County, New- Jersey, near 

 Green-pond. At this place copperas was manufactured 

 during the late war. 



13. Radiated asbestus, from rocks in place, situated in 

 the primitive district adjacent to New- York — called tremo- 

 lite by Dr. Bruce. 



14. Tubepores, Catskill. 



15. Granite, with black mica, from the primitive region 

 tour miles from New- York. 



* The analysis of this mineral by Mr. Seybert will be foimd in this Num- 

 ber — it is called by him Maclurite. 



