THE NONMETALLIC MINEEALS. 



231 



Cuiiip<ixllii>ii of Ixiii.rilcs/niiii rarioiis locitlities — Coiitimicd. 



No. 1.— Con tains also 0.4 CaCOs. No. 2.— 0.2 CaCOa. No. 3.— 12.7 CaCOa. No. 5.— 22.90 FeO + FeoOa. 

 No. 6—0.10 FeO + FeoOs. No. 7.— 0.85 CaO, 0.38 MgO, 0.20 SO3. No. 8.— 0.35 FeO, 0.41 CaO, 0.11 MgO, 

 0.09 KoO, 0.17 Na..,0, trace CO2. No. 9.— FeO not det., 0.62 CaO, trace MgO, 0.11 K.,0, 0.20 Na^O, 0.26 COo. 

 No. 10.— 0.80 CaO, 0.16 MgO. 



Origl?) ami mode of occurrence. — The mineral received it.s name 

 from the villag-e of Baux, in southern France, where a hig-hly ferrifer- 

 ous, pisolitic variety was first found and described by Berthier in 

 1821. The origin of the mineral, both here and elsewhere, has been 

 a matter of considerable discussion. The following- notes relative to 

 the foreign occurrences are from a paper by R. L. Packard:^ 



The geological occurrence of the bauxite of Baux was studied by H. Coquand 

 [Bulletin de la Society Geologique de France, XXVIII, 1871, p. 98], who describes 



^Mineral Resources of the United States, 1891, p. 148. 



