Sample No.: EET90299

Location: Elephant Moraine

Field Number: 6358

Dimensions (cm): 2.6 x 2.1 x 0.8

Weight (g): 8.1

Meteorite Type: E3 chondrite

Macroscopic Description: Robbie Marlow

The exterior surface of EET90299 is brown, shiny and smooth. The interior matrix is fine-grained and has a dark brown to black color. Oxidation is heavy and has masked any features present.

Thin Section (,2) Description: Brian Mason

The section consists mostly of chondrules and chondrule fragments, up to 1.8 mm across; they are made up of granular or radiating pyroxene. The opaque material consists largely of nickel-iron with minor sulfides. Weathering is extensive, with limonitic staining and areas of brown limonite throughout the section. Remnants of fusion crust rim the section. Microprobe analyses show that most of the pyroxene is close to MgSiO3 in composition, but FeO contents up to 5.3% were recorded; the mean composition is Fs2.4. The nickel-iron contains up to 0.5% Si. One grain of silica polymorph, probably tridymite, was analyzed. The meteorite is an enstatite chondrite, and the variable pyroxene composition suggests the E3 classification.