METEORITE

coarse iron octahedrite, type IAB

LOCATION Campo del Cielo, Gran Chaco Gualamba, Argentina, S AMERICA

TREATMENT - NONE

LATITUDE: 27 degrees 39 minutes South, Longitude 61 degrees 44 minutes West. ·

STRUCTURE: Coarse octahedrite, Og, Widmanstatten bandwidth 3.0 ±0.6 mm. · CHEMICAL COMPOSITE: Group I, 6.68% Ni, 0.43% Co, 0.25% P, 87 ppm Ga, 407 ppm Ge, 3.6 ppm Ir. ·

TIME : ,000 to 6,000 years ago first record of its discovery was in 1576 by a Spanish Captain named Miraval

CHEMISTRY classified in Group I, , 6.68% Ni, 0.43% Co, 0.25% P, 87 ppm Ga, 407 ppm Ge, 3.6 ppm Ir.

MINERALS nbsp;· Kamacite—this iron nickel alloy makes about 90 percent of specimens in finger size and width crystals. Neumann bands are common. · Taenite and plessite, the other iron-nickel alloy constituents are found at grain boundaries. · Schreibersite is uncommon. · Troilite is found

aggregates with graphite and silicates.