Chap. XVI.] 
GONDITE SERIES ; PETROLOGY. \^ 
345 
and after the layers of sediment that gave rise to the manganese-ore 
deposit. The sediment must have been unusually rich in alkalies, 
probably in the form of felspar derived from the disintegration of older 
granitic or gneissic rocks. The sediments must also have contained a 
small proportion of oxides of iron and manganese, the presence of which 
may be taken as indicating that the change from the conditions 
under which the main mass of the manganese oxides was deposited, 
to that under which practically non-manganiferous sediments were 
deposited, was not abrupt, but was marked by a period of deposition 
during which the mechanically deposited sediments were mixed with a 
little chemically deposited manganese oxides. 
Localities for the Rocks of the Gondite Series. 
I wiU now give a list showing the locahties at which the various rocks 
of the gondite series have been found. This hst will only refer to the 
Central Provinces because the lists already given for Jhabua and 
Narukot each refer to one locaUty only. Locahties will only be given 
for those of the associated rocks that are not of common occurrence, as 
the others are found at many locahties. 
Ldst of localities for the members of the gondite series in the Central 
Provinces. 
Gondite : — At almost every occurrence of the rocks of this series ; but Chikhla I, 
Wagora, Gumgaon, and Mansar, may be specified as specially good localities. 
Spessartiie-rock : — At almost every place where gondite is foimd, but in much less 
abundance. The following localities are specially good : — Hatora, Chargdou, 
Mandri, Manegaon, and Parsioni. 
Bhodonite-gondile : — Sonegaon, Thirori, Devi, Guguldoho, Parsioni, Ramdongri, 
Satak I. 
Rhodonite- spessartite-rock .• — Gaimukh, Ghoti, Beldongri, Manegaon, Panchdla, 
Waregaon. 
Apatite-gondite : — Guguldoho. 
Apatite-spessartite-rock : — Guguldoho, Kandri, Mindri. 
Amphibole-gondite : — ChAndadoh, Chikmara, Hatora. 
Amphibole-sptssartite-rock : — Hatora, Mandri, Parsioni. 
Amphibole-rhodonite- gondite : — Bichua. 
Amphibole-spcssartite-rhodonite-rock : — Parsioni, Sitagondi. 
Amphibole-a patite-gondite : — Nandapuri. 
Magnetite- gondite : — Kachi Dhana, Kodegaon. 
Magnetite-spessartite-rock : — Kachi Dhana. » 
Ehodochrosite-gondiie : — Gaimukh. 
Rhodochrosite-spessartite-rhodon ite-rock : — Gaimukh. 
Rhodochrosite-rhodonite-rock : — Devi, Gaimukh, GuguldohOj(?) 
Orthodast-govdite : — Kachi Dhana 
Spessartite-orthocluse-rock : — Kandri. 
Mierocline-gondite : — Kachi Dhana, Kandn. , *■ 
Pyroxene-microcline- gondite : — Sukli. 
