. Guide leaflet. he ground, or that it was broken by impact. The latetime of bursting is also indicated by the lack of secondary crust nthe pieces. Stony matter makes up about s per cent by weight of Long Island,the remainder having originally been nickel-iron and troilite, nowpartly changed to linionite through rusting. On the polished surfacesof some of the fragments in the case the nickel-iron may be seen a- small-Inning dot-. The -tony matter consists essentially of the mineralsbronzite one of the orthorhombic pyroxenes), olivine and chromite 36 MEHIUAX MUSEUM GUIDE LEAFLETS and bears a cl
. Guide leaflet. he ground, or that it was broken by impact. The latetime of bursting is also indicated by the lack of secondary crust nthe pieces. Stony matter makes up about s per cent by weight of Long Island,the remainder having originally been nickel-iron and troilite, nowpartly changed to linionite through rusting. On the polished surfacesof some of the fragments in the case the nickel-iron may be seen a- small-Inning dot-. The -tony matter consists essentially of the mineralsbronzite one of the orthorhombic pyroxenes), olivine and chromite 36 MEHIUAX MUSEUM GUIDE LEAFLETS and bears a close and interesting resemblance to the terrestrial basalticIgneous rock peridotite. The content of chromite (9 per cent of thewhole) is remarkable and is the highest yet reported in meteorites. Long Island presents a feature heretofore unknown in of the planes of fracture show striated surfaces with groovingand polishing (slickensides) due to the parts grinding together in their. LONG ISLAND. Slickensided surface showing movement in the mass before it fell. flight through space before the mass reached our atmosphere. Twoof the pieces in this case show such slickensided surfaces and one of themis illustrated oil this page. Other fine specimens of Long Island may be seen in the generalmeteorite collection on the fourth floor of the Museum (Hall No. 404).
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
