[JOHNSTON-ELLSWORTH] ANNAHEIM METEORITE 91 



PLATE V 



No. 1. — 68 gram slice of meteorite after partial solution in 10% HCl. Lamellae 

 of 38% nickel alloy in original position unattacked. About twice natural size. 

 No. 2. — Same as No. 1. Side view. 



PLATE VI 



No. 3.— Etched by bromine water X125. Single lamella of 38% nickel alloy 

 with long slender crystals of (FeNi)3P in parallel position on the left and numerous 

 sections of the same visible in ground mass. Note minute inclusions of massive 

 phosphide on edges of high nickel alloy which are shown enlarged in Figs. 7 and 8. 



No. 4. — Unetched 125. Part of lamellar structure of 38% nickel alloy, the 

 lamellae in the central part alternating with 6.87% nickel ground mass. Lamellae 

 parallel to elongation of structure. Note inclusion of massive phosphide on edge 

 of left hand projection of 38% nickel alloy structure. The slightly dark zone on 

 same projection of this unetched section may be due to minute disseminated particles 

 of graphitic carbon. 



PLATE VII 



No. 5. — Unetched X125. Part of lamellar structure of 38% nickel alloy, 

 lamellae transverse to elongation of structure. Black boundary lines due to relief 

 except at lower right where the dense black represents a broken out line of massive 

 phosphide. Sections of minute phosphide crystals visible in ground mass. 



No. 6. — Slightly etched with bromine water X50. Complete rather simple 

 lamellar structure of 38% nickel alloy joined to lines of massive phosphide (upper 

 right and bottom), which are in such low relief as to l^e out of focus and show merely 

 as black areas. 



PLATE VIII 



No. 7. — Unetched X500. Massive phosphide showing fracturing in situ. The 

 slight projection at the upper side shows the tendency to penetrate between grains 

 of ground mass. Dark parts represent holes where fragments have broken out. 



No. 8. — Etched with bromine water X 125. Massive phosphide in characteristic 

 eutectic position at the junction of g;-ound mass areas. 



PLATE IX 



No. 9.— Etched with bromine water X500. Single lamella of 38% nickel 

 alloy (in relief) apparently moulded on an irregular mass of phosphide which has 

 subsequently been separated a short distance by movement and squeezing in of 

 plastic ground mass. This is a higher magnification of part of Fig. 1. 



No. 10. — Etched with bromine water X500. Fragment of mass:ive phosphide 

 included in lamellae of 38% nickel alloy and pprhaps partially digested. What 

 appear to be partially resorbed phosphide crystals are visible in high nickel alloy 

 This is also a higher magnification of part of Fig. 1. 



