MINERAL RESOURCES OF THE STATE OF NEW YORK 1 3/ 



been encountered in drill holes recently put down by the Ramapo 

 Ore Co. It appears that the main ore body follows the contact 

 of the two formations which have a northeasterl}'- strike and a 

 southeasterly dip of 30° or a little more. 



The ore of this mine is lower in phosphorus than the usual run 

 of the limonites. Analyses of the washed ore shows 47 to 50 per 

 cent iron and .04 to .09 per cent phosphorus. 



Maliby mine. This large open pit is i| miles northeast of Millerton 

 and almost on the Connecticut line, within sight of the famous 

 Orehill mines which lie across the border to the southeast. The 

 Central New England Railroad adjoins the property on the west. 

 The mine was last worked by the Thomas Iron Co. which ceased 

 work in 1891, but previously had been operated by C. S. Maltby 

 and the ore smelted in a furnace at the mine. The pit is about 

 600 feet long northeast and southwest and 400 feet wide. The 

 ore apparently lies between limestone which shows on the southeast 

 side and the schist, although the latter does not appear in outcrop. 

 There are three bands of ore exposed on the southeast wall, two of 

 which are narrow and inclosed within limestone and a thicker band 

 of 50 or 60 feet lying on limestone and covered by drift. The 

 limestone dips 45° or so to the northeast. W. H. Hobbs (see 

 references at end of chapter) has given a section of the formations 

 which indicate that the ore is repeated by faulting, although the 

 evidence on this matter is not very clear. 



Analyses of the ore are reported by Putnam who found the 

 washed limonite to contain 41 per cent iron and .156 phosphorus, 

 and the lump or rock ore 48 per cent iron and .215 phosphorus. 

 The mine is reported to have been opened in 1750. Its output is 

 not recorded. 



Mt Riga mine. The Mt Riga mine is an open pit 500 feet long 

 and 100 to 200 feet wide, one-half of a mile southeast of Mt Riga 

 station on the Harlem Railroad. The last work on the mine was 

 performed by Bamum, Richardson & Co. about 1888; previously 

 operations had been carried on by the Mt Riga Iron & Mining Co. 

 which stopped work in February 1885. The present owner of the 

 property is George E. Kaye of Mt Riga. There are few details 

 available about the mine which is now filled with water, but it 

 would appear that the ore rested on limestone and was capped by 

 drift which is 50 feet thick on the south end of the pit. Putnam 

 reports that the average stripping was 15 feet and that the yield 

 of washed ore was one-half the mined product. A sample from 

 500 tons of washed ore returned 41.6 per cent iron and .61 

 phosphorus. 



