(j(iol()(jif of Broachneadoivs. 1 77 



11. Ferguson, W. H. — Notes on the Occurrence of Limestone at 



Merrimu. Prog. Kept. Geol. Surv. Yic, No. YIIL, 1894, 

 pp. 69-70. 



12. Murray. I{. A. F. — Keport on Limestone Quarries in Bacchus 



Marsh District. Mon. Prog. Rept. Geol. Surv. Vic, 

 Nos. 8 and 9, 1899, p. 51. 



13. Dunn, E. J. — Notes on some geological formations near 



Bacchus Marsh. Rept. and Stat. Dept. Mines, Vic, 

 31st Mar., 1890, pp. 26-27. 



14. Smyth. R. B.— Rep. of Prog., No. II., 1875, p. 130. 



Chemical Analyses. 



I. II. III. IV. Y. YI. YII. VIII. 



SiO, 67.75 44.95 50.50 48.78 8.93 23.89^ 



AlA 16.11 15.50 16.01 15.85 3.38 8.88/ 



Fe.A 0.50 2.04 1.40 5.37) , ^^] 



4.467, 2.05 



'I 1.39| 1.08 1.476 1' 1.90 



FeO 4.00 10.47 8.98 6.34 



MgO 0.79 7.43 6.13 6.03 12.75 12.85 



CaO 2.68 8.24 8.05 8.91 31.07 19.87 



Na.,0 2.60 3.04 3.0^ 3.18 1.81 2.68 



ICO 3.42 1.98 2.02 1.63 0.63 0.71 



H.,0+ 0.96 2.60 0.29 1.03 1.84 1.27 



RX>- 0.20 0.52 0.48 0.73 



CO., nil 0.18 0.68 38.04 27.94 



TiO., 0.85 2.77 2.04 1.39 



P.A 0.09 0.52 0.39 0.47 



MnO trace 0.21 trace 0.29 



Total 99.95 100.45 99.97 100.00 99.84 99.17 



8p. Gr. 2.68 2.91 2.86 



OaCO, 54.91 33.34 54.974 55.00 



MgCO, 29.50 26.73 39.007 41.00 



99.924 100.00 



* Water + loss = .05 



I. Granite Quarry, Gellibrand Hill, Broadmeadows (analysed 

 by H. C. Richards, M.Sc). 

 II. Older basalt (A) Quarry, section xv., Tullamarine, County 

 of Bourke. 



