52 KHCUUKS UK THK AUSTIIALIAN MUSEUM. 



56.7860 ijrams of the finely cru.shed material passed throuofh 

 a fine sieve yielded .038-4 grams of metal, ^= .067%. A 

 qualitative examination of the metal showed it to consist of 

 metallic iron with a very small amount of nickel. No phos- 

 phorus was detected, but may be present, as the quantity of 

 metal treated was probably too small to permit of its 

 detection. The absence of uranium oxide and tin oxide was 

 proved. On treatment of the fine powder for one hour with a 

 boilino- solution of pure copper sulphate, .45% of iron was 

 dissolved, which would represent fine particles of the metal 

 which had passed through the sieve. The absence of oxidation 

 products proves that the meteorite is of recent fall. 



The "norm " calculated from the percentage composition ou 

 the lines laid down by Fai'rington^ is as under : — 



Orthoclase .. ... ... 0.56 



Albite ... ... ... 2.62 



Anorthite ... ... ... "22.52 



Diopside ... ... 6.58 



Hypersthene ... ... 64.76 



Olivine ... ... ... 0.48 



Chromite ... ... ... 1.12 



Troilite ... ... ... 0.96 



Nickel-ir(>n .. ... ... 0.45 



100.05 



This no doubt approximates pretty closely to the actual 

 mineral composition, which is relatively simple, hut some 

 i-e-adjustnient may be necessary between the felsf)ar and 

 pyroxene molecules. 



!>ijstt'iinit'n- imsitltiii. — According to Farringtcm's classification 

 and nomenclature the Binda stone falls into Class IV. with the 

 Massing, Petersburg, Peramiho and Stannern Meteorites, and 

 would be described as dofemic, persilicic, ])erpolic, pei-pvi'ic, 

 permirlic, domiric, magnesiferrous. In i^i-ezina's cla.'^sifica- 

 tion- it takes its place in ttic Kuki'itc division of the 

 Achondrites. 



' Farrington — Field. Mus. Publication 151, (jcol. Scr., ill., 9, 1911, 



'-' Ward— Cat. W'aid-Coonlcy Coll. Alctcoritcs, Chic;igo, VM)A, 

 p. 97; Brc-/in:i — Proc. Amcr. I'hil. Soc, \liii., 1904, p. 233. 



