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Mineralogical Magazine; April 2004; v. 68; no. 2; p. 369-394; DOI: 10.1180/0026461046820193
© Mineralogical Society of Great Britain and Ireland
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FIG. 2. Grouped Ir and Os lamellae. (a). ENSM-6774. Hollow skeleton of Os-Ru-iridium lamellae. Pol. sect. SEM(BS). 325 µm. (b) ENSM-6774. Skeleton of iridium and osmium lamellae partly filled with ‘irite’. Pol. sect. SEM(BS). 300 µm. (c) MNHN. Group of loose iridium lamellae filled with lumps of micrograined ‘irite’. Pol. sect. SEM(SM). 140 µm. (d) ENSM-6774. Dense agglomerate of Ir-osmium lamellae, partly corrugated and bent. Pol. sect. SEM(BS). 260 µm. (e) MNHN. Disordered agglomerate of iridium and osmium lamellae (white straight lines) and of laurite (grey irregular masses). Partly pol. sect. SEM(SM). 140 µm. (f) MNHN. Compact grain composed of Ir-Ru-osmium (large diagonal and fine intercrossed lines), laurite (grey irregular masses) in a matrix of unresolved Ru-Os-Ir-Fe-oxide(s). Pol. sect. SEM(BS). 160 µm.





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