AUT. 3. BLACK SANDS FROM IDAHO SHANNON. 33 



47. Same locality. Original No. 839c. Abundant ilmenite ; common quartz; 



augite and pyrope; rare gold, almandite, magnetite, allanite (?). Sand 

 averaging 0.50 mm., pebbles of various rocks up to 1 cm. in diameter. 



48. Same locality. Original No. 839y. Abundant quartz; frequent augite, 



allanite (?); rare olivine, ilmenite, pyroxene. Grain size, average^ 

 0.20 mm. 



49. Snake River, AVapi. Original No. P 275. Abundant augite, pyrope, ilmenite ; 



common quartz ; rare olivine, biotite, magnetite, almandite, limonite, 

 allanite (?). Average grain diameter, 0.30 mm. 



NEZ PEECE COUNTY. 



50. Early Bird placer, on Clearwater River, near Lewiston. Original No. P 627. 



Abundant pyrope ; common ilmenite, hornblende, almandite ; rare augite, 

 olivine. Average grain diameter, 0.50 mm. 



51. French Creek. Original No. P 664. Abundant ilmenite ; common quartz ; 



rare zircon, magnetite, monazite, titanite (?). Average grain diameter, 

 0.50 mm. 



ONEIDA COUNTY. 



52. Fall Creek placer, Snake River. Original No. P 236. Abundant quartz; 



common augite, ilmenite; rare muscovite, biotite, gold, almandite, ob- 

 sidian, magnetite, pyrope, olivine. Average grain diameter, 0.20 mm. 



