Macroscopic Description: Robbie Marlow
Dull black fusion crust covers 60% of the exterior of this carbonaceous chondrite. Evaporite deposit is present on some surfaces and some surface fracturing is visible. The interior matrix is black with abundant millimeter-sized white inclusions. The matrix is fined grained and evenly textured.

Thin Section (,2) Description: Brian Mason
The section shows a few chondrules, up to 0.6 mm across, some irregular aggregates, and numerous small silicate grains in a black matrix. The silicate grains are almost entirely olivine near Mg2SiO4 in composition, with a few more iron-rich grains. A little pyroxene near MgSiO3 in composition is present. The matrix appears to consist largely of iron-rich serpentine. The meteorite is a C2 chondrite; it is very similar to QUE93004 and 93006, with which it is probably paired.

Macroscopic Description: Robbie Marlow
The exterior of this carbonaceous chondrite has patches of dull black fusion crust. Areas devoid of fusion crust are dull black and porous. The interior matrix is black and fine grained. One millimeter-sized dark clast is visible.

Thin Section (,2) Description: Brian Mason
The section shows rare chondrules up to 0.5 mm across, and numerous small silicate grains in a dark brown to black matrix. Most of the chondrules have been converted into brown serpentine. Trace amounts of nickel-iron and troilite are present as minute grains. Olivine is near Mg2SiO4 in composition, with a few more iron-rich grains. The matrix appears to consist largely of iron-rich serpentine. The meteorite is a C2 chondrite; it is very similar to QUE93005, with which it is probably paired.

Macroscopic Description: Carol Schwarz
Approximately 50% of this tiny rusty and fractured fragment is covered with dark reddish brown fusion crust. Some metal is visible. The entire sample is now embedded in epoxy.

Thin Section (,1) Description: Brian Mason
The section shows an aggregate of chondrules and chondrule fragments, up to 1.2 mm across, and mineral grains in a moderate amount of black matrix. The chondrules and mineral grains consist almost entirely of pyroxene, with possible traces of olivine. The matrix contains a moderate amount of nickel-iron and sulfides. Weathering is extensive, with veinlets and patches of brown limonite throughout the section. Microprobe analyses show that the pyroxene is close to MgSiO3 in composition (FeO 0.7-1.8%, CaO 0.2-0.6%). The nickel-iron contains 2.1-2.4% Si. One grain of roedderite, NaKMg5Si12O30, was analyzed. The meteorite is classified as an E4 chondrite.

Thin Section (QUE93517,1; 93575,2; 93584,2; 93586,1) Description: Brian Mason
Microprobe analyses of these sections show a wide range of pyroxene compositions (Fs14-57). The meteorites are classified as mesosiderites. They are very similar to the larger mesosiderite QUE86900 (Antarctic Meteorite Newsletter 10(2), 1987), with which they are probably paired.

Thin Section (,2) Description: Brian Mason
The section shows numerous chondrules and chondrule fragments (up to 1.8 mm across) in a black matrix which contains small amounts of nickel-iron and troilite. Brown limonitic staining pervades the section. Microprobe analyses show a wide range of olivine and pyroxene compositions: olivine, Fa1-21, mean Fa14; pyroxene, Fs4-42. The meteorite is an L3 chondrite (estimated L3.5).

Thin Section (,1) Description: Brian Mason
The section shows an aggregate of chondrules and chondrule fragments, up to 1.2 mm across, and mineral grains in a moderate amount of black matrix. The chondrules and mineral grains consist almost entirely of pyroxene, with accessory olivine in a few chondrules. Polysynthetic twinning is present in some of the pyroxene. The matrix contains a moderate amount of nickel-iron and sulfides. Weathering is extensive, with veinlets and patches of brown limonite throughout the section. Microprobe analyses show that the pyroxene is close to MgSiO3 in composition (FeO 0.4-1.9%, CaO 0.1-0.6%). The nickel-iron contains 2.8% Si. The meteorite is classified as an E4 chondrite. It is very similar to QUE93513, with which it is probably paired.

Thin Section (,2) Description: Brian Mason
The section consists almost entirely of nickel-iron, with a few anhedral grains of olivine, up to 0.6 mm across, at one margin. The section is rimmed with brown limonite, evidently the product of weathering. Olivine composition is Fa12. The specimen appears to be a fragment of a pallasite.

Thin Section (,2) Description: Brian Mason
The section shows numerous chondrules (up to 1.2 mm across), chondrule fragments, and mineral grains in a small amount of black matrix. The matrix contains moderate amounts of nickel-iron and sulfide. Weathering is extensive, with brown limonitic staining throughout the section. The section is partially rimmed with fusion crust. Microprobe analyses show a wide range of olivine and pyroxene compositions: olivine, Fa1-32, mean Fa13; pyroxene, Fs4-25. The meteorite is classified as an L3 chondrite (estimated L3.5).

Thin Section (,2) Description: Brian Mason
The section shows numerous chondrules and irregular aggregates, up to 1.5 mm across, in a black matrix. A small amount of nickel-iron and troilite is present at the rims and within the chondrules. Microprobe analyses show that most of the olivine in the chondrules is close to Mg2SiO4 in composition, but ranges up to Fa17; pyroxene composition is Fs1-11. The matrix appears to consist largely of iron-rich olivine, about Fa50. The meteorite is classified as a C3 chondrite of the Vigarano subtype; it is very similar to QUE93429, with which it is probably paired.

Thin Section (,2) Description: Brian Mason
The section shows numerous chondrules (up to 1.8 mm across), chondrule fragments, and mineral grains in a small amount of black matrix. The matrix contains a small amount of nickel-iron and troilite. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses shows a considerable range in olivine and pyroxene compositions: olivine, Fa6-19, mean Fa14; pyroxene, Fs2-19. The meteorite is classified as an L3 chondrite (estimated L3.7).

Thin Section (,3) Description: Brian Mason
The section is a microbreccia of pyroxene with minor plagioclase, and a few minute opaque grains. Individual clasts range up to 1.8 mm across. Microprobe analyses show that pyroxene compositions range fairly uniformly from Wo2Fs22 to Wo15Fs50; plagioclase compositions range from An80 to An94. One grain of SiO2, probably tridymite, and one grain of ilmenite were analyzed. The meteorite is classified as a howardite.

Thin Section (,2) Description: Brian Mason
The section shows numerous chondrules and irregular aggregates, up to 1.5 mm across, in a black matrix. The matrix contains accessory amounts of nickel-iron and troilite. Microprobe analyses show that most of the olivine in the chondrules is close to Mg2SiO4 in composition, but ranges up to Fa10; pyroxene composition is Fs1-2. The matrix appears to consist largely of iron-rich olivine, about Fa50. The meteorite is classified as a C3 chondrite of the Vigarano subtype; it is very similar to QUE93429 and 93639, with which it is probably paired.

Macroscopic Description: Kathleen McBride
This meteorite is shaped like a volcanic bomb and has a rusty-colored, exfoliating, flaky exterior. It is dull on one side and shiny on the opposite side. Thick evaporitic material is present on two exterior surfaces. The flaky crust has numerous surface cracks that do not penetrate the interior and run mostly in the longitudinal direction. The weathered crust extends a few millimeters into the interior. The interior is very fresh compared to the exterior and proved to be very coherent and extremely hard. The interior is fine-grained and varies in color from steel-gray to black with interstitial white to clear crystals.

Thin Section (,6) Description: Brian Mason
Only vague traces of chondritic structure are visible in the thin section, which shows the meteorite to consist largely of granular to prismatic enstatite (grain size 0.1-0.2 mm), about 20% nickel-iron, minor amounts of sulfides, and a little plagioclase. The enstatite is almost pure MgSiO3 (Fe 0.1-0.6%, Ca 0.7-0.9%). The metal contains 0.9% Si. One grain of plagioclase, An17, was analyzed. The meteorite is an E6 chondrite.

Macroscopic Description: Kathleen McBride
LON94101 consists of abundant friable pieces, none of which fit together. This sample contains small (2-3 cm) patches of purplish-red fusion crust. It is black, heavily fractured, and contains green inclusions in the millimeter to centimeter size range. There are also some rusted clasts and small (<1 mm) angular white flecks. The exterior has a greenish tinge where the interior is black. Interior clasts consist of angular tan colored inclusions that are ~3-4 mm in size. Also visible are several rounded white clasts with a sugary texture that are about 3 mm in diameter.

Thin Section (,12 and ,14) Description: Brian Mason
The sections show a few chondrules, up to 0.4 mm across, some irregular aggregates, and numerous small mineral grains in a black matrix. LON94101,12 has two pale green-gray granular enclaves, one 2.9 mm and the other 1.8 mm across. The mineral grains are almost entirely olivine, near Mg2SiO4 in composition, with a few iron-rich grains. A small amount of pyroxene, near MgSiO3 in composition, is present. The matrix consists largely of iron-rich serpentine. The larger enclave consists almost entirely of serpentine, similar in composition to the matrix. The smaller enclave consists largely of enstatite (Fs1-3), with a little olivine (Fa2) and some carbonate grains, both calcite and dolomite. The meteorite is a C2 chondrite.

Macroscopic Description: Kathleen McBride
LON94102 consists of one large fragment and one small piece that do not fit together but are definitely pieces of the same carbonaceous chondrite. Approximately 5% of the dull, pitted fusion crust remains on this specimen. The exterior matrix is black and contains numerous small white angular inclusions. Small areas have oxidized to a red-brown color. Fractures that penetrate the interior are numerous. Slickenside-like features are visible on the surface. Evaporite deposit is present. The sample is friable and easily crumbled when trying to obtain a chip for thin sections.

Thin Section (,11) Description: Brian Mason
The section shows a few chondrules, up to 0.6 mm across, some irregular aggregates, and numerous small mineral grains in a black matrix. The mineral grains are almost entirely olivine, near Mg2SiO4 in composition, with a few iron-rich grains. A small amount of pyroxene, near MgSiO3 in composition, is present. The matrix consists largely of iron-rich serpentine. The meteorite is a C2 chondrite. It is very similar to LON94101, and the possibility of pairing should be considered.

Macroscopic Description: Cecilia Satterwhite
The exterior of this meteorite has dull, black fusion crust that is patchy on some surfaces. Areas devoid of fusion crust have a dull gray color. Some small green, black, and white minerals are visible. The interior of this meteorite is light gray and contains abundant, mostly small inclusions; however, a few larger inclusions are present. The inclusions are white, green-black, and gray in color. The black inclusions are the largest; one rounded inclusion is 0.6 cm. Other black inclusions vary in size from 0.2 to 0.5 cm. One basaltic clast is visible. Weathering is minor.

Thin Section (,5) Description: Brian Mason
The section shows a microbreccia of pyroxene and plagioclase clasts in a comminuted groundmass of these minerals. The pyroxene is orthopyroxene with a minor amount of pigeonite; orthopyroxene clasts are up to 1.8 mm across, whereas pigeonite clasts are smaller (maximum 0.3 mm). Microprobe analyses show pyroxene compositions ranging from Wo1Fs18 to Wo11Fs43. Plagioclase compositions range from An74 to An93. Accessory amounts of an SiO2 mineral, probably tridymite, are present. The meteorite is a howardite.

Macroscopic Description: Roberta Score
This small, dark-gray to black stone is rounded and polished. The spotty, brownish-black, remnant fusion crust is difficult to distinguish from the melted, glassy grains on the exterior surface. The interior is coarse-grained, crystalline, and glassy. It is composed of laths or globular grains of transparent or translucent maskelynite plus dull or glassy-black pyroxene. Several mafic-rich areas, as large as 5 x 4 mm, were noted. Oxidation is scattered throughout the interior. Thick evaporite minerals are concentrated as small blebs.

Thin Section (,3) Description: Brian Mason
The section shows a coarse-grained aggregate of subequal amounts of pyroxene and maskelynite; the maskelynite as laths up to 3.6 mm long, and the pyroxene as interstitial anhedral to subhedral grains. Maskelynite is fairly uniform in composition, An55-64. The pyroxene is pigeonite of variable composition, Wo9-20 and Fs21-69. The meteorite is a shergottite.

Macroscopic Description: Roberta Score
This lunar meteorite is identical to QUE93069 and would probably fit together if QUE93069 was still in one piece. One side of this flat stone has thick gray-green, frothy fusion crust. The other side has thin, weathered, dull green-brown fusion crust. A fractured surface reveals the interior matrix which is dark gray to black with abundant inclusions. The largest inclusion is white and measures 1.0 x 0.2 cm. The newly exposed interior surface has a lighter gray-colored matrix and abundant white and gray clasts. One white clast measures 0.4 x 0.2 cm. Other inclusions present include fine-grained, buff-colored clasts, several brecciated gray clasts, and smaller white clasts. Many clasts have weathered to a yellowish color. As in QUE93069, most of the clasts are small and friable and, unfortunately, are not extractable.

Thin Section (,5 and ,7) Description: Brian Mason
The sections show a microbreccia of granular clasts, up to 1.5 mm across, and small plagioclase grains, in a translucent to semi-opaque brown glassy matrix; one grain of metallic iron, 0.3 mm across, was noted. Most of the plagioclase is almost pure anorthite (Na2O 0.3-0.5%, K2O less than 0.1%), with a few grains with higher Na2O, up to 3.2%. QUE94269,7 has a 3 mm clast of subequal amounts of plagioclase and pyroxene; the plagioclase is anorthite (Na2O 0.3-0.5%), the pyroxene ranges from Wo5Fs39 to Wo34Fs22 with fairly uniform En content. This specimen is a lunar meteorite, very similar to QUE93069 (Antarctic Meteorite Newsletter 17(2), 1994), with which it is certainly paired.

Macroscopic Description: Roberta Score and Marilyn Lindstrom
This is a very strange meteorite. It is highly glassy and inhomogeneous. The exterior is black with thick, shiny glass on one side and an irregular, rough surface on the other. The glass is black, conchoidal, vesicular in places, and has melted into many of the abundant cavities. The interior is very inhomogeneous. This meteorite is wedge-shaped, ranging in thickness from 3 mm to 10 mm. At the thin end, the rough black material has small white flecks in it, while the middle region consists of a chaotic aphanitic material. The thick end is a coarse-grained breccia with abundant angular white, yellow, and black mineral and lithic clasts up to 3 mm across. Two 2 mm-thick glassy, vesicular, black veins cut across the different areas. Oxidation is lightly scattered throughout the meteorite. It will be difficult to do detailed sampling of this complex breccia.

Thin Section (,4) Description: Brian Mason
The section shows a microbreccia of pale brown pyroxene and colorless plagioclase clasts, up to 1.2 mm across, in a comminuted groundmass of these minerals. Colorless fusion crust rims part of the section, which is cut by a 1 mm-wide veinlet of vesicular black glass. Pyroxene compositions show a wide range: Wo4-30, Fs23-55, En25-66. Plagioclase composition is An91-97. A little olivine, Fa33-36, was analyzed, and one grain of silica polymorph, probably tridymite. Fusion crust composition is SiO2 47, Al2O3 16, FeO 13, MgO 9.1, CaO 12, K2O <0.1, TiO2 0.6, MnO 0.2, Na2O 0.5. The black glass has a similar but somewhat variable composition. The high FeO:MnO ratio indicates a lunar origin, and the meteorite has a composition of a basalt-rich breccia. Its composition appears to be intermediate between those of EET87521 (Geochim. Cosmochim Acta, v. 53, p. 3323, 1989) and Calcalong Creek (Nature, v. 352, p.614, 1991) and very similar to that of Y793274 (Proc. NIPR Symp. Antarct. Meteorites, v. 4, p. 3, 1991).