Orlando                28°32′51′′N, 81°21′44′′W

Orange County, Florida, USA

Fall: 8 November 2004

Achondrite (eucrite, monomict)

History: On Monday, November 8, 2004, around 6:15 P.M., Ms. Donna Shuford was startled by the noise of something hitting the side of her house. She discovered that something had hit the top of her car and ricocheted onto the side of her house. A single ~180 g stone that had fragmented on impact was found.

Petrography and Geochemistry: (D. Mittlefehldt and M. Zolensky, NASA JSC) Major phases are low-Ca pyroxene (Wo₃En₃₅Fs₆₂; Fe/Mn ~30) with lamellae of high-Ca pyroxene (Wo₄₅En₂₉Fs₂₆), and calcic plagioclase (An_{71– 83}Ab_16–28Or_~1). Minor phases include titanian chromite (TiO₂ = 16–20, Al₂O₃ = 2–3, MgO = 0.4, MnO = 0.8; [all wt%]), ilmenite (MgO = 0.5, MnO = 0.9 [both wt%]), with silica, iron sulfide, and Fe,Ni metal. The rock is largely unbrecciated, but has shock veins with granular texture and containing some glass. Remnant ophitic/subophitic igneous texture is preserved with plagioclase laths ~1 mm by ~30 µm, and ~2 mm blocky pyroxene grains. In much of the rock, pyroxene has been recrystallized to ~20–50 µm equant grains while plagioclase retains its original shape.

Classification: Achondrite (eucrite, monomict).

Specimens: A 20 g type specimen is on deposit at SI. The finder holds the main mass.