1874.] 



85 



[G-enth. 



An average of the live specimens contained : 



= 49.65 Metallic Iron. 



^= 0.16 Phosphorus. 



No. 6. RUMBARGER BaNK. 



A sample of ore was taken from a pile alongside of the Bank. It is 

 mostly amorphous and compact, also somewhat porous, and has the cavi- 

 ties lined with a thin coating of fibrous limonite ; the cavities are also 

 coated with red ochre and at times with yellow ochre. 



The composition was found to be as follows : 



= 51.91 Metallic Iron. 



0.158 Phosphorus. 



100.00 

 100 Iron contain 0.30 Phosphorus. 



No. 11. Lttle Bank. 

 The sample received for examination consisted mainly of amorphous 

 compact brown ore, intermixed with fine fibrous limonite. The fibres are 

 from ^ to ^ of an inch in length and form botryoidal coatings ; sometimes 

 divergent. The outside covered with yellowish ochreous ore. 

 The analysis gave : 



Ferric oxide = 82.00 = 57.40 Metallic Iron. 



Manganic oxide ^ trace 

 Alumina = 1.94 



Magnesia 0.17 



Lime trace 



