418 RECORDS OF THE AUSTRALIAN MUSEUM. 



I. — Ben Lomond ; taken for water •4915 gram , general -9914 gram 



II.— „ ; „ -4920 „ , „ -5878 „ 



III.— „ ; „ -8631 „ , „ -8631 „ 



IV.— „ ; _ „ 1-2842 „ 



V. — ,, ; mean of analysis I. II. III. IV. 



VI.— Table Mt., Colorado.'" 



VII.— Calculated for CaO. Al.O^. 4SiO,. 6H,0. 



After 46 hours over strong sulphuric acid the loss of water 

 amounted to 2-0 %• 



Inverell, New South Wales. 



Crystals of chabazite similar to PI. Ixxix., fig. 1, are found em- 

 bedded in a decomposed basaltic rock forming a cliff near the 

 bridge at Inverell." 



Bell Mount, Middlesex, Tasmania. 



(Plate Ixxix., fig. 3). 



Some fine crystals, '75 to 1"5 cm. in diameter, have been found 

 loose and coating a vugh in tertiary basalt at this locality.'^ Like 

 the Ben Lomond and Inverell minerals these ai"e penetration 

 twins on the vertical axis, but they differ from the former in the 

 presence of a (1120) and t (1123). The crystals arc strongly 

 striated in the directions indicated in the figure. Two crystals 

 were obtained by exchange with Mr. W. F. Petterd of Tasmania. 



ANALCITE. 



Ben Lomond, New South Wales. 



The analcite is beautifully crystallised, transparent and glassy. 

 The crystals are small averageing about two mm. in diameter and 

 seem to consist uniformly of the trapezohedron (211^, A typical 

 crystal was measured and gave the result : 



211 A 2ll = 48^41'; calculated 48" lU' 

 211 A 121 =33 17 : „ 33 33^ 



w Hillebrand— Bull. U. S. aeol. Surv., 20, 1885, p. 24. 



'1 Wilkinson — ^Jotes on the Geology of N.S. Wales, p. 62, Government 



Printer, Sydney, 1882 ; Porter — Journ. Eoy. Soc. N.S. Wales, xxii., 



1888, p. 88, pi. i., f. 7. 

 12 Petterd— Papers and Proc. Eoy. Soc. Tas., 1902-3, p. 24. 



