436 DALE— CAMBRIAN MANGANESE DEPOSITS OF [April 25, 



Gruner Allagite in Tomosite 



eingewachsen. 

 73.71 Manganoxydulat. 

 16.00 Kieselerite. 

 7.50 Kohlensaure. 



97.21 



Schebenholz bei Elbingerode. 



This analysis was published in 1817 and 1819 (Jashe 13: 1-12) 

 and to all appearances is the same mineral analyzed by the writer, 

 which is also labelled allagite. 



Another part of the same specimen is a greenish jaspery mineral 



similar physically to the green band of the Newfoundland specimen 



and has the following composition : 



Recalculation. 



SiO, 76.40 SiOo 69.84 



FcoOa 007 MnCOa 10.00 



ALO3 2.46 MnSiOs 8.00 



MnO 10.53 MgCOs 379 



CaO 1.62 CaCOs 2.80 



MgO 1.81 2H,OAL03-2SiO, 6.11 



H,0 80 



CO, 7.32 



100.54 



100.947 



According to the recalculation this material is a manganiferous 

 argillaceous chert, and is in all probability the silicious schist or 

 shale of the Culm referred to later on. 



The third portion of the specimen analyzed is a pinkish sparry 

 mineral occurring as small veins with the following composition : 



Recalculation. 



SiO, 7.10 MnCOs 76.13 



Fe,03 62 MnSiOs 8.92 



ALO3 76 CaCOs 4.00 



MnO 52.01 MgCOa 2.44 



CaO 2.26 SiOo 2.16 



MgO 1. 17 FcoOg 37 



H,0 1.70 2H,OAl,03-2SiO, S.98 



CO2 32.20 100.00 



97-82 



This mineral, because of its similarity to another specimen with 



