Sample No.:	QUE 99094
Location:	Queen Alexandra Range
Field No.:	11495
Dimensions (cm):	6.0x5.5x4.0
Weight (g):	329.3
Meteorite Type:	H5 Chondrite

   

Macroscopic Description: Kathleen McBride
85% of the meteorite's surface is covered with a smooth, brown-black fusion crust. The crust displays polygonal fractures and oxidation halos. The interior reveals a gray matrix with small gray chondrules and larger medium gray clasts, one measuring 2x3 cm in size. The interior is moderately rusty with a high metal content.

Thin Section (,2) Description: Linda Welzenbach and Tim McCoy

Plane-Polarized Light	Cross-Polarized Light

This meteorite is a brecciated and shock-blackened H5 chondrite (Fa₂₀, Fs₁₇). Shock blackening is present in approximately half the section and borders the un-blackened portion along a sharp boundary. Veins of metal-sulfide melt are present throughout the meteorite.

Macroscopic Description: Kathleen McBride
Dull, black fusion crust covers 20% of the exterior of this carbonaceous chondrite. The interior is a dark gray to black matrix with millimeter sized white and light gray inclusions.

Thin Section (,3) Description: Tim McCoy and Linda Welzenbach
The section measures 8x5 mm. Vesicular fusion crust comprises ~80% of the section. Unaltered material is relatively rare. A few large chondrules are present at one end, although no unaltered matrix may remain. Olivine compositions are Fa_3-13, with most less than Fa₄, and orthopyroxene is Fs_2-13. The meteorite is a CM2 chondrite. It is possible that it is spalled off of a larger mass in flight, explaining the abundance of fusion crust.

Macroscopic Description: Kathleen McBride
10% of the exterior of these meteorites are covered with patchy brown-black fusion crust. The interiors reveal rusty crystalline material that crumbles easily. These meteorites are too rusty to observe any visible inclusions.

Thin Section (,2) Descriptions: Tim McCoy and Linda Welzenbach
These meteorites are so similar that a single description suffices. The section consists of mm-sized enstatite grains (Fs_0-1), SiO₂, zoned plagioclase (An_7-31), potassium feldspar, metal, troilite, daubreelite, alabandite and schreibersite. The latter phases often occur as rounded enclaves in the enstatite. These meteorites are paired with the QUE 99059/94204/97348/97289 grouping. Unlike these earlier members, which contained either plagioclase or SiO₂, these three contain both phases. These meteorites are unusual aubrites or enstatite chondrite impact melt rocks.

	QUE 99122 Plane-Pol. Light	QUE 99122 Cross-Pol. Light

QUE 99157 Plane-Pol. Light	QUE 99157 Cross-Pol. Light	QUE 99157 Cross-Pol. Light

	QUE 99158 Plane-Pol. Light	QUE 99158 Cross-Pol. Light

---

Sample No.:	QUE 99134
Location:	Queen Alexandra Range
Field No.:	11656
Dimensions (cm):	0.5x0.5x.25
Weight (g):	0.387
Meteorite Type:	Metal

   

Macroscopic Description: Kathleen McBride
The exterior is vesicular and covered completely with brown/black fusion crust. The interior has a high metal content with some white granular minerals and some black "spongy" material.

Thin Section (,5) Description: Tim McCoy, Linda Welzenbach and Gretchen Benedix

Reflected Light	Reflected Light

The section measures 5 by 3 mm and is greater than 95% metal. The metal is fairly uniform in composition (~23% Ni) and appears to be a fine plessitic structure heat altered to α₂. Other phases include troilite, chromite, olivine (Fa₂₅) and orthopyroxene (Fs₂₃). The meteorite may be metal from an L chondrite, which was heat-altered during atmospheric entry.

---

Sample No.:	QUE 99145
Location:	Queen Alexandra Range
Field No.:	11458
Dimensions (cm):	1.5x1.0x0.75
Weight (g):	2.034
Meteorite Type:	L5 Chondrite

   
 
Macroscopic Description: Kathleen McBride
90% of the exterior has dull brown/black fusion crust that is rusty in some areas. The interior is black with rusty areas.

Thin Section (,2) Description: Linda Welzenbach and Tim McCoy

Plane-Polarized Light	Cross-Polarized Light

This meteorite is a heavily shocked L5 chondrite (Fa₂₄, Fs₂₀). Shock blackening occurs throughout the meteorite, with finely disseminated metal-sulfide blebs and veins. In addition, a mm-wide shock vein crosscuts the section.

---

Sample No.:	QUE 99177
Location:	Queen Alexandra Range
Field No.:	11631
Dimensions (cm):	4.0x3.0x2.0
Weight (g):	43.555
Meteorite Type:	CR2 Chondrite

   

Macroscopic Description: Kathleen McBride
The exterior is completely covered with weathered brown-black fusion crust exhibiting polygonal fractures and evaporites. The interior is a chocolate brown, soft matrix with rust and cream colored chondrules ranging in size from 1 to 3 mm.

Thin Section (,4) Description: Tim McCoy and Linda Welzenbach
The section exhibits well-defined, metal-rich chondrules up to 2 mm in diameter in a dark matrix of FeO-rich phyllosilicate and metal. Polysynthetically twinned pyroxene is abundant. Silicates are unequilibrated; olivines range from Fa_1-31, with most Fa_0-2, and pyroxenes from Fs_1-7Wo_1-5. The meteorite is probably a CR2 chondrite.

Plane-Polarized Light	Plane-Polarized Light	Cross-Polarized Light	Cross-Polarized Light

Macroscopic Description: Kathleen McBride
25% of the exterior surface is covered with thin, black shiny fusion crust. This achondrite's interior has an off-white, opaque crystalline matrix with ~ 1 mm size black and green minerals.

Thin Section (,3) Description: Tim McCoy and Linda Welzenbach

Cross-Polarized Light	Cross-Polarized Light

The section shows a groundmass of coarse (up to 2 mm) comminuted orthopyroxene, with a composition of Fs₂₀Wo_1-2. The Fe/Mn ratio of the pyroxene is ~30. The section exhibits a slight granoblastic texture. The meteorite is a diogenite.

Macroscopic Description: Kathleen McBride
100% of the exterior is covered with brown/black fusion crust. The interior is rusty brown and moderately hard.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Reflected Light	Reflected Light

The section consists of 70-80% round, elongate and irregular metal particles typically 100-200 microns in diameter but reaching 1 mm. These particles are separated by terrestrial hydrated iron oxides. Chondrules occupy 20-30% of the rock and occur in similar shapes and sizes as metal. They are fine-grained and dominated by barred, microporphyritic and cryptocrystalline texture. Silicates are iron-poor (Fa_3-4, Fs₁). The meteorite is similar in many respects to QUE 94411 and may be paired, although it was recovered more than 5 km from QUE 94411.

Macroscopic Description: Kathleen McBride
Approximately 40% of this achondrite's exterior has a shiny black fusion crust with some dull and weathered patches. The interior is white matrix with long, thin black minerals. The meteorite looks shocked. A broken, weathered face has small, black globs that resemble fusion crust.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light	Cross-Polarized Light

The section exhibits a brecciated texture dominated by equant pyroxenes ~200 microns in diameter and plagioclase laths reaching 0.5 mm in length. Pyroxene is finely exsolved with compositions ranging from Fs₂₃Wo₄₀ to Fs₅₄Wo₂, as well as intermediate compositions. The Fe/Mn ratio of the pyroxene is ~28. Plagioclase is An₈₀Or₁. The meteorite is a brecciated eucrite.

Macroscopic Description: Kathleen McBride
The exterior is 100% fully covered with fusion crust. It has no chips or cracks and looks as though it fell to earth yesterday. The fusion crust is black, glassy and has a ropy texture. The interior has a sandy texture, tan in color giving the appearance similar to sandstone. Binocular microscope shows dense, fine-grained clear yellow (citrine colored) and root beer colored crystals. There are some black mineral grains as well. This meteorite was much more dense and difficult to break than most other similar looking stones.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Cross-Polarized Light	Cross-Polarized Light

The meteorite exhibits an unbrecciated, fine-grained (~200 micron average grain size) structure of pyroxene and feldspar. Pyroxenes are finely-exsolved with lamellae from 1-5 microns and a range of compositions from Fs₂₈Wo₃₅ to Fs₄₉Wo₇, as well as a range of intermediate composition. Plagioclase is An₈₇Or_0.5. The Fe/Mn ratio of the pyroxene is ~29. The meteorite is a eucrite.

Macroscopic Description: Tim McCoy
These two masses each exhibit a highly corroded and discolored surface, where they were in contact with the soil on Derrick Peak, and a shiny brown surface. The upper surface is highly pitted. The larger of the two masses exhibits prominent linear protrusions of resistant schreibersite crystals in depressions formed by severe terrestrial weathering and removal of the original surface. These depressions are aligned, probably reflecting alignment of the resistant schreibersite.

Microscopic Description: Tim McCoy
On a cut surface, these are typical members of the Derrick Peak iron shower (Clarke, Meteoritics 17, 129). Only a thin layer of corrosion is found on the surface and neither fusion crust nor heat-altered zone is found. Structurally, they are coarsest octahedrites with large areas of swathing kamacite enclosing elongate, skeletal schreibersite crystals and cm-sized round troilite inclusions. Like other Derrick Peak irons, they are certainly members of group IIAB.

Macroscopic Description: Kathleen McBride
40% of the exterior of this meteorite is covered with a chocolate brown fusion crust. This crust is patchy and displays polygonal fractures. The exposed interior is gray and tan and has dark colored, crystalline clasts. The interior is mostly gray matrix with some areas of tan colored grains. This rock contains numerous euhedral clasts of various colors - black, green, white, yellow, and is moderately soft.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The section shows a groundmass of highly comminuted pyroxene, with the largest grain reaching 1.8 mm. Orthopyroxene has a composition of Fs₂₂Wo_1-2. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a diogenite.

Macroscopic Description: Kathleen McBride
~40% of the exterior surface is covered by dark brown fusion crust that has shiny, black patches. The surface contains "vugs" or areas where material has been plucked or weathered out. The fine-grained medium gray matrix has numerous euhedral clasts in various colors - gray, black, tan and white.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 1 mm) with medium- to coarse-grained basaltic clasts ranging up to 3 mm. Pyroxene includes orthopyroxene (Fs_20-53Wo_1-3) and exsolved pyroxenes of Fs₄₉Wo₅ to Fs₂₂Wo₃₈. The Fe/Mn ratio is ~30. Plagioclase is An_78-93Or_0-1. The meteorite is a howardite.

Macroscopic Description: Kathleen McBride
This achondrite's exterior has dull brown-black fusion crust over 90% of the surface. The fusion crust has a pearl like luster and exhibits polygonal fracturing. The interior is composed of crystalline mineral grains - white to light gray in color. Most of this material is now rust. Accessory minerals are black < 2 mm in diameter. Millimeter sized pale green and brown grains are also visible.

Thin Section (,2; ,6) Description: Tim McCoy and Linda Welzenbach
The meteorite exhibits a coarsely-brecciated structure, with clasts sizes of several mm. The individual clasts have mm-sized grains with irregular, intergrown grain boundaries. A single olivine grain was noted. Orthopyroxene is homogeneous (Fs₂₇Wo₁) and olivine is Fa₂₉. A large (>5 mm) troilite nodule with a highly distorted polycrystalline texture is also present. The meteorite is a diogenite.

Plane-Polarized Light	Reflected Light	Cross-Polarized Light	Cross-Polarized Light

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light

The section shows a groundmass of coarse comminuted pyroxene, with polycrystalline fragments with grain sizes up to 2.5 mm. Orthopyroxene has a composition of Fs₁₅Wo₁. The Fe/Mn ratio of the pyroxene is ~30. Stringers of SiO₂ were found in igneous contact with orthopyroxene. The meteorite is a diogenite.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light

The section exhibits well-defined, metal-rich chondrules up to 3 mm and metal spheres up to 1 mm in a dark matrix of FeO-rich phyllosilicate. Polysynthetically twinned pyroxene is abundant. Silicates are unequilibrated; olivines range from Fa_1-32, with most Fa_0-2, and pyroxenes from Fs_1-4Wo_0-1. The meteorite is probably a CR2 chondrite.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light

The section shows a groundmass of comminuted pyroxene and plagioclase (up to 1 mm) with large (6 mm) coarse-grained diogenite fragments and a single mm-sized impact melt spherule. Pyroxene includes orthopyroxene (Fs₄₀Wo_1-2) and exsolved pyroxenes of Fs₃₇Wo₄ to Fs₁₅Wo₃₈. The Fe/Mn ratio is ~30. Plagioclase is An_76-93Or_0-1. The meteorite is a howardite.

Macroscopic Description: Kathleen McBride and Tim McCoy
This 45.8 g ellipsoidal specimen has a frothy exterior. One end of the specimen exhibits a rounded depression. The end of the mass appears as if it may have been torn from another piece during atmospheric passage.

Microscopic Description: Tim McCoy
The section is dominated by Fe, Ni metal with 10-20 vol.% of rounded, elongate and ellipsoidal troilite inclusions that range in size from 200 microns to 2 mm in maximum dimension, with most less than 1 mm. The section is bounded by an a2 structure produced during atmospheric heating that extends up to 2 mm into the interior of the meteorite. Rare fusion crust is present. The frothy exterior resulted from a combination of atmospheric ablation and terrestrial weathering of the troilite inclusions. The troilite inclusions exhibit multiple twinning from deformation. No silicate or chromite inclusions were observed. Swathing kamacite surrounds the troilite inclusions. In areas of relatively few troilite inclusions, a weak Widmanstatten pattern is observed, with very thin kamacite lamellae (100-120 microns wide). Kamacite exhibits numerous Neumann bands and these bands are subsequently bent or, in many cases, sheared by subsequent microfaults. Large areas between kamacite bands are dominated by net or finger plessite. The classification of this meteorite is uncertain. Most other troilite-rich meteorites (e.g., Mundrabilla, LEW 86211, Soroti) differ significantly. The closest relative may be the fine octahedrite Mont Dieu, which is a member of group IIE.

	Ref. Light - Polished Sur.	Ref. Light - Etched Surface

Reflected Light - Melted Troilite	Reflected Light - Troilite	Reflected Light - Etched Surface

Macroscopic Description: Kathleen McBride
The exterior of these meteorites is black. The interior is platy and black in color with evaporites and tiny, round, white chondrules.

Thin Section (,2) Descriptions: Tim McCoy and Linda Welzenbach

MET 00431 Cross-Pol. Light	MET 00433 Cross-Pol. Light

The sections consist of a few small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix. Olivine compositions are Fa_0-31, with most less than Fa₂, and orthopyroxene is Fs_0-7. In thin sections, these meteorites exhibit fracturing and flattening of chondrules along a preferred orientation. The matrix is an iron-rich serpentine which occurs in spheres of ~200 microns in diameter, with each sphere exhibiting a fibrous internal texture. Parting of the meteorites occurs between these spheres. The meteorites are CM2 chondrites

MET 00434 Plane-Pol. Light	MET 00434 Reflected Light	MET 00434 Cross-Pol. Light	MET 00435 Cross-Pol. Light

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light

The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a matrix of Fe-rich serpentine. Matrix, whole chondrules and chondrule mesostasis have been aqueously altered, similar in degree to Nogoya. Olivine is Fa_0-1. The meteorite is a CM2 chondrite.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach

Plane-Polarized Light	Cross-Polarized Light

The section exhibits coarse (>5 mm) individual pyroxene grains, polycrystalline fragments and comminuted groundmass grain of uniform composition of Fs₂₆Wo_1-2. The Fe/Mn ratio of the pyroxene is ~30. Small diopside grains were noted optically, as were metal, sulfide and mm-sized chromite grains. The meteorite is a diogenite.