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Acfer 366

This is an OFFICIAL meteorite name.
There is no official abbreviation for this meteorite.
Information from the NHM Catalogue: This meteorite is not listed in the Catalogue
Information from MetBase: This meteorite is not listed in MetBase
Information from the Nomenclature Committee: This meteorite was not observed to fall.
Classification: CH3
Year of find: 2002
Country of origin: Algeria
Latitude: 26.6093; Longitude: 3.93567

References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006)
Find references in NASA ADS
Comments: New 3 Feb 2006
Mass: 1456 g
Writeup,
from MB 90: [Provisional text]

Acfer 366 26° 36.56' N 03° 56.14' E

Acfer region, Africa

Find: November 2002

Carbonacous Chondrite (CH3)

History: A single stone weighing 1456 g was found in the Acfer region of Africa by Filiberto Ercolani (deceased 2004). Petrography: (V. Moggi-Cecchi and A. Salvadori, MSP; G. Pratesi, Firenze) The outer surface displays a small portion of fusion crust. A fresh, cut surface reveals a chondritic texture with several visible metal grains and dark colored matrix. Chondrules range from 30-300 μm with a mean apparent diameter of 91 μm. Cryptocrystalline chondrules predominate (58%) although GO, GOP (22%) and PO (17%) chondrules are also observed. BO chondrules are rare (3%). Most of the larger chondrules are GO/GOP type. Fragments (both deriving from chondrules and not) comprise the majority of the sample (~70% of the total volume), with minor chondrules (15-20% vol.) and non-silicate phases (20-25% vol.). Non-silicate phases are mainly Fe-Ni metal (predominantly kamacite) with some sulfides also occurring. The metal and sulfides grains range from 10-100 μm, are homogenously distributed and can be rounded or irregular in shape. Metal also occurs as droplets within chondrules. Geochemistry: EMP analyses of chondrule olivine indicate a fairly homogeneous composition (Fa0-3, mean Fa1) although olivine in chondrule fragments has a more variable composition (Fa1-20, mean Fa5). Low-Ca pyroxene in chondrules and in fragments is relatively homogenous, Fs0-7Wo1-5. High-Ca pyroxene is rare, occurring only in PO chondrules, Fs23.8Wo31.9. Plagioclase is found in chondrules and as angular fragments within matrix and ranges from An80 to An100. Kamacite has a high Ni content (5-9 wt%). Sulfides are typically troilite (Ni =1-2 wt%) although some pyrrhotite grains with Ni up to 11 wt% have been observed using SEM-EDS. Oxygen Isotopes (I. Franchi and R. Greenwood, OU) are δ17O = 1.781 ‰, δ18O = 4.610 ‰, Δ17O = 0.616 ‰. Classification: Carbonaceous Chondrite (CH3) W2, S1. Specimens: A total of 30 g and one thin section are on deposit at Museum of Planetary Sciences (MSP). The main mass weighing 1410 g is also held at MSP (inventory number MSP2273).

Institutions
and collections MSP: Museo di Scienze Planetarie, Via Galcianese, 20/h, 59100 Prato, Italy.
OU: Planetary and Space Sciences Research Institute, The Open University, Milton Keynes, MK7 6AA, UK.

Acfer 374 meteorite
about the name Name: Acfer 374 This is an OFFICIAL meteorite name. There is no official abbreviation for this meteorite. Information from the NHM Catalogue: This meteorite is not listed in the Catalogue Information from MetBase: This meteorite is not listed in MetBase Information from the Nomenclature Committee: This meteorite was not observed to fall. Classification: CO3 Year of find: 2002 Country of origin: Algeria Latitude: 26.6087; Longitude: 4.053 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 118 g Writeup, from MB 90: [Provisional text] Acfer 374 26°36.52' N 04°03.18' E Acfer region, Africa Find: November 2002 Carbonaceous Chondrite (CO3) History: Many small fragments totaling 118 g were found in the Acfer area of Africa by an Italian dealer. The main mass weighs 100 g. Physical Characteristics: (V. Moggi-Cecchi, A. Salvadori, G. Pratesi, Museum of Planetary Sciences, MSP) The hand-size specimen displays a very frail appearance since it looks to be composed by a very dark material, with a low density. The outer surface of the sample is brown-red while the inner part is darker. Petrography: The thin section displays a chondritic texture, with chondrules’ dimensions ranging from 30 to 450 µm (mean value 110 µm). Chondrule types are variable, with GO type (36 out of 60), PO (10), GOP (7), RP (2), C (2), POP (1), BO (1). Matrix:chondrule ratio is ~ 0.5. Chondrules are set in a very fine-grained matrix composed of olivine, phyllosilicates and pyroxene. GO chondrules display a poikilitic texture, with olivine crystals embedded in clinoenstatite crystals. CAIs and AOIs account for about 10 % vol. Opaque phases, mainly represented by Fe-Ni alloys, troilite, pentlandite and pyrrhotite are rims outside chondrules and account for 6-8 % of the total volume. Rare awaruite (Ni2-3Fe) and tetrataenite (Fe, Ni) grains, as well as schreibersite and nickelphosphide observed. Geochemistry: (SEM and EMPA) Olivine composition (Fo55-99 mean Fo94, with a PMD = 177) (calculated on 26 analyses). Olivine in Type I chondrules (GO) displays an extremely narrow compositional range, (Fo95-100 mean value Fo97.1). Olivine in type II chondrules Fo55-100. Olivine in AOIs is Fo-rich, Fo96-100. Low-Ca pyroxene is predominantly enstatite En85-100 with different mean values for crystals in chondrules. POP chondrules have high-Ca pyroxenes, En62.4Wo36.6Fs0.9. No plagioclase has been observed but a mesostasis of plagioclase composition is common. Kamacite Ni = 4-5, mean value 4.61 wt%; Co = 0.1 to 1.0, mean value 0.16 wt%. Oxygen Isotopes (I. Franchi, R. Greenwood, Open University) δ17O = - 6.042‰, δ18 O = -2.306‰, Δ17O = -4.843‰. Classification: Carbonaceous Chondrite (CO) W1, S2. Specimens: An 18 g mass, two polished thin sections, and the main mass of 100 g are on deposit at MSP. Institutions and collections MSP: Museo di Scienze Planetarie, Via Galcianese, 20/h, 59100 Prato, Italy.

Dhofar 1285 meteorite name.
about the name Name: Dhofar 1285 This is an OFFICIAL meteorite name. Official abbreviation: Dho 1285 Information from the NHM Catalogue: This meteorite is not listed in the Catalogue Information from MetBase: This meteorite is not listed in MetBase Information from the Nomenclature Committee: This meteorite was not observed to fall. Classification: Ureilite Year of find: 2002 Country of origin: Oman Latitude: 19.3025; Longitude: 54.555 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 406 g Writeup, from MB 90: Dhofar 1285 19°18.15'N 54°33.3'E Oman Find: 11 December 2002 Achondrite (ureilite) History: Three dark brown stones, broken into fragments of total weight 406 g, were found December 11, 2002 in the desert of Oman separated by ~2.5 km. Petrography: (Lorenz, Vernad and Brandstätter, NHMW) A coarse-grained rock that consists mainly of olivine with minor amounts pyroxene. The veins of troilite and FeNi metal crosscut the whole rock. Accessory phases, graphite and daubreelite are present. Geochemistry: The cores of olivine grains Fo76.6 Fe/Mn=59 are surrounded by reduction rims (~50 µm in width), which contain small Fe-rich metal grains. The composition of olivine within the reduction rims gradually changes from Fo78 Fe/Mn=51 on the inside towards Fo96 Fe/Mn=8.6 at the outer edge. The outer parts of the olivine grain rims are completely replaced by a fine-grained aggregate of forsterite Fo97-99, troilite and metal. Reduction zones are developed along cracks and veins that crosscut olivine grains. Pyroxene En78.7Wo9.8, Fe/Mn=20 contains numerous, tiny, co-oriented inclusions of Ca-rich pyroxene En56.2Wo37.3; Fe/Mn=13; SiO2-rich feldspathic glass Ab50An48.5; low-Ni FeNi metal grains and extremely fine, poorly resolvable exsolution lamellae of Ca-pyroxene. In places, pyroxene grains also have reduction rims with composition En83Wo6.7. Cr2O3 contents of olivine and pyroxene (0.7 and 1.1 wt% respectively) and CaO content of olivine = 0.4 wt% are in the ranges of those established for ureilites. Classification: Achondrite (ureilite) with moderate shock and highly weathered. Specimens: A 92.48 g sample and one thin section are on deposit at Vernad. An anonymous finder holds the main mass. Institutions and collections Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, Moscow 117975, Russia.

Dhofar 1286 meteorite
about the name Name: Dhofar 1286 This is an OFFICIAL meteorite name. Official abbreviation: Dho 1286 Information from the NHM Catalogue: This meteorite is not listed in the Catalogue Information from MetBase: This meteorite is not listed in MetBase Information from the Nomenclature Committee: This meteorite was not observed to fall. Classification: Eucrite Year of find: 2005 Country of origin: Oman Latitude: 18.4263; Longitude: 54.4286 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 898 g Writeup, from MB 90: Dhofar 1286 18°25.579'N 54°25.719'E Oman Find: December 2005 Achondrite (polymict eucrite) History: Two pieces of meteorite, weighing 898 g in total, were found on a sandy surface in the desert of Oman. The distance between the fragments was about 30 m. Joined together, the fragments form an almost complete individual sample with ~ 10% missing. Petrography: (Lorenz, Vernad and Brandstätter, NHMW) On the unbroken surfaces, black fusion crust is partly preserved. The meteorite is a polymict breccia, consists of fragments of medium- to coarse-grained metamorphosed gabbroic rocks and fine- to medium-grained sub-ophitic basaltic rocks. Minor equigranular metamorphic pyroxene-feldspar rocks, melts and melt matrix breccias are present. The rock fragments are situated in a fine-grained clastic matrix and comprise 60 vol% of the whole meteorite. Accessory minerals are troilite, chromite, ilmenite, silica, Ca-phosphate, and metal FeNi. Geochemistry: Pyroxene is En35.1-62.8Wo1.8-5.7; (Fe/Mn=30) with exsolved augite En21.1-54.2Wo21.1-38.9. Classification: Achondrite (polymict eurcrite). Specimens: A 206 g specimen and one polished section are on deposit at Vernad. An anonymous finder holds the main mass.

Edited by Majoska (02/10/06 03:30 AM)

Dhofar 1302

. Classification: Howardite Year of find: 2005 Country of origin: Oman Latitude: 18.9195; Longitude: 54.3624 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 23.9 g Data from: MB90 Table c Line 22: Date: 3/12/2005 Latitude: 18°55.168'N Longitude: 54°21.742'E Mass (g): 23.9 Pieces: 1 Class: How Ferrosilite (mol%): 21-48 Wollastonite (mol%): 1.1-43.4 Type spec mass (g): 7.595 Info: Classified by C.A. Lorenz, Vernad

Dhofar 1303

Ureilite Year of find: 2002 Country of origin: Oman Latitude: 19.3025; Longitude: 54.555 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New: 3 Feb 2006 Mass: 404 g Data from: MB90 Table c Line 23: Date: 11/12/2002 Latitude: 19°18.15'N Longitude: 54°33.3'E Mass (g): 404 Pieces: 7 Class: Ureilite Shock stage: S3 Weathering grade: W4 Type spec mass (g): 92.48 Info: Classified by C.A. Lorenz, Vernad

Fukang meteorite

Classification: Pallasite-Main gr Year of find: 2000 Country of origin: China Latitude: 44.4333; Longitude: 87.6333 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 1 MT Writeup, from MB 90: Fukang 44° 26’N 87° 38E Fukang, China Find: 2000 Pallasite (main group) History: An anonymous finder recovered a 1003 kg specimen near Fukang, China, in 2000. The sample was at the Tucson Gem and Mineral Show in February 2005, and seen by D. S. Lauretta of UAz. Approximately 20 kg had been removed form the main mass by the finder before the Tuscon show and the mass investigated at UAz was 983 kg. (D. S. Lauretta, D. Hill, M. Killgore, D. Della-Giustina, Y. Goreva, UAz; I. Franchi, Open U). Petrography and Geochemistry: Olivine Throughout the large mass, olivines vary in shape from rounded to angular; many are fractured. They range in size from

Grove Mountains 024516

Classification: Ureilite Year of find: 2003 Country of origin: Antarctica Latitude: -73; Longitude: 75.2
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006)
Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 24.7 g Writeup, from MB 90: Grove Mountains (GRV) 024516 73°00'S, 75°12'E Antarctica Find: 2003 Achondrite (ureilite)
History: A stone of 24.7 g was found within a moraine during the 19th Chinese Antarctica Research Exploration in Grove Mountains. Physical Characteristics: (Miao B., Xu L., Lin Y., IGGCAS) It is brownish grey, with some yellow and dark grey spots but no fusion crust remains. Petrography: It shows typical ureilite texture consisting mainly of olivine and pigeonite with minor carbonaceous matrix (graphite and diamond were identified by Raman). Triple junctions with an angle of 120° are common among coarse-grained silicates. Geochemistry: Olivine (homogeneous cores) Fo84.0±0.4; Pigeonite En77.1±0.4Wo9.3±0.1Fs13.6±0.4. Olivine grains have reduced rims (Fa£ 5.4 mol%) that contain abundant fine-grained inclusions of Ni-poor metal and sulfide. Limonite veins are common. Classification: Achondrite (ureilite) with moderate degree of shock and a hi

Hammadah al Hamra 337 meteorite

Classification: CK4 Year of find: 2001 Country of origin: Libya Latitude: 29.4833; Longitude: 12.1233 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 198 g Writeup, from MB 90: [Provisional text] Hammadah al Hamra 337 29°00.00' N 12°07.40' E Libya, Africa Find: February 24, 2001 Carbonaceus Chondrite (CK4) History: A single stone weighing 198 g was found in February 2001 in the Hammadah al Hamra region of Libya, Africa by Giovanni Pratesi during a joint scientific expedition of the Museum of Planetary Sciences of the Province of Prato and Museum of Natural History of the University of Florence. The main mass weighs 174 g Petrography: (V. Moggi-Cecchi, A. Salvadori, G. Pratesi, Museum of Planetary Sciences, Prato) The main mass has a dark brown external surface, with small fusion crust areas. A small cut surface displays a chondritic texture, with chondrules set in a dark green matrix and very large CAIs (up to 1 mm). The thin section contains few chondrules (not perfectly delineated and sometimes altered) set in fine-grained matrix made by a devitrified mesostasis containing several coarser-grained olivine crystals. Chondrules range from 380 to 1800 µm (mean value 700 µm on 25 chondrules). Chondrule types are variable: GO (16 out of 21); PO/POP (2); GOP (2). High-Ca pyroxenes in POP chondrules have acicular forms. Very rare and extremely altered AOIs, accounting for ~2% of the total volume with large CAIs, (~1 mm) are common. Plagioclase crystals can be found in GO and PO chondrules. Metal alloys are absent (

Königsbrück meteorite

Classification: H/L4 Year of find: 2004 Country of origin: Germany Latitude: 51.2667; Longitude: 13.9 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 51.8 g Writeup, from MB 90: Königsbrück 51°16.0 N 13°54.0 E Königsbrück, Saxony, Germany Find: 2004 May Ordinary chondrite (H/L4) History: A complete oriented stone, partly covered with fusion crust, weighing 51.8 g was found by an anonymous finder on a field close to the village of Königsbrück, Saxony, Germany during a search for moldavites. Petrography: (A. Greshake and M. Kurz, NHB) The sample is a fresh unbrecciated stone with equilibrated olivine and unequilibrated pyroxene. Geochemistry: Olivine Fa22.6; Pyroxene Fs8.2-20.1. Classification: Ordinary Chondrite; S4, W1. Specimens: A 11.7 g specimen plus one thin section are on deposit at MNB. An anonymous finder holds the main mass. Institutions and collections Kurz: M. Kurz, Schillerstrasse 7, D-34626 Neukirchen, Germany. MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany

Northeast Africa 003

Classification: Lunar (bas. breccia) Year of find: 2000 Country of origin: Libya Latitude: 30.4667; Longitude: 13.55 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New, revised 3 Feb 2006; approved 16 Jan 2006 Mass: 124 g Writeup, from MB 90: [Provisional text] Northeast Africa 003 30º28'N 13º33'E 30º28'N 13º33'E Libya Found 2000 November/ 2001 December Achondrite (Lunar mare basalt and basaltic breccia) History: A dark gray, 6 g stone was found by a prospector 12 km NW from Al Qaryah ash Sharqiyah in wadi Zam Zam area, Libya in 2000 November. A stone of 118 g with incomplete fusion crust was found nearby in 2001 December. Petrography: (J. Haloda and P. Tycova, PCU): The meteorite contains two adjacent parts, mare basalt and basaltic breccia, both of which were investigated in detail. The main portion (~75 vol%) of the meteorite is a coarse-grained, low-Ti olivine-rich basalt, showing porphyritic texture of olivine (Fo19-73), zoned pyroxene (En5-71Wo6-38) and plagioclase (An84-92) with late-stage mesostasis containing silica, Fe-rich pyroxene and pyroxferroite, plagioclase, ilmenite, troilite and apatite. Opaque phases include chromite, Ti-rich chromite, ulvöspinel, ilmenite, troilite and trace Fe-Ni metal, shock veins and impact melt pockets are present; all plagioclase is totally converted to maskelynite. Mineral modes are (vol%) olivine = 17.5, pyroxene = 60.6, plagioclase = 18.2, ilmenite = 1.2, spinel = 0.8, mesostasis+impact melt = 1.8. Geochemistry: Bulk composition (in wt%): SiO2 = 44.7 TiO2 = 1.3 Cr2O3 = 0.5 Al2O3 = 8.0; FeO = 21.8 MnO = 0.3 MgO = 13.6 CaO = 9.2 Na2O = 0.3 K2O = 0.1 Fe/Mn = 81. Concentration of selected elements (in ppm, INAA; R. Korotev, WashU) Sc = 50.8 Co = 50.5 Ni = 84 Hf = 1.1 Ta = 0.15 Th = 0.43 U = 0.2; REE pattern is flat at 10 x CI with slight negative Eu anomaly, not depleted in LREE. Adjacent part is basaltic breccia (~25 vol%) consisting of well-consolidated glassy impact-melt matrix containing scattered mineral fragments of chemical composition identical with the coarse-grained low-Ti olivine-rich basalt and two larger clasts of low-Ti mare basalt lithologies. The low-Ti basaltic clasts are finer-grained and petrologically more evolved. No regolith component or highland material is present. Specimens: A 20 g specimen and two polished thin sections on deposit at PCU. An anonymous finder holds the main mass. Institutions and collections PCU: Charles University, Faculty of Science, Institute for Cheochemistry, Mineralogy and Mineral Resources, Albertov 6, 128 43 Prague 2, Czech Republic. WashU: McDonnell Center for Space Sciences, Washington Univ., One Brookings Drive, St. Louis, MO 63130, USA

Orlando meteorite

This meteorite was an observed fall. Classification: Eucrite Year of fall: 2004 Country of origin: United States Latitude: 28.5475; Longitude: -81.3622 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 180 g Writeup, from MB 90: Orlando 28° 32' 51²N 81° 21' 44²W Orange County, Florida, U. S. A. Fell 2004 November 8 Achondrite (eucrite) 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 stone, mass ~180 g, had fragmented on impact. 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 An71-83Ab16-28Or~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/sub-ophitic 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 (monomict basaltic eucrite). Specimens: A 20 g specimen on deposit at SI. The finder holds the main mass. Institutions and collections JSC: Johnson Space Center, Houston, TX 77058, USA. SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA.

Ulasitai meteorite name.

This meteorite was not observed to fall. Classification: IIIE Year of find: 2004 Country of origin: China Latitude: 44.9567; Longitude: 91.4025 References: Published in Meteoritical Bulletin, no. 90, MAPS 41, in preparation (2006) Find references in NASA ADS Comments: New 3 Feb 2006 Mass: 430 kg Writeup, from MB 90: [Provisional text] Ulasitai 44°57'24″N 91°24'09″E Mulei county, Xinjiang Province, China Find: April 28, 2004 Iron (IIIE) History: A single iron meteorite, weighing 430 kg, was found during fieldwork by Mr. Xiaodong Li, a geologist. The meteorite was discovered on the hillside in the Mountain Beita area, Mulei county, Xinjiang Province. Physical Characteristics: (Miao B., Xu L., Lin Y., IGGCAS) The meteorite has an angular shape with centimeter-scale concaves on its surface and is dark brown with a sub-cm layer of limonite on its bottom, but with no fusion crust remaining. Geochemistry: Kamacite Ni = 6.87–7.39 Co = 0.47-0.75 (both wt%) and taenite Ni = 11.6–36.7 Co = 0.22-0.65 (both wt%) form the Widmanstätten pattern with 0.6-2.0 mm (average 1.14 mm) kamacite bandwidths. Bulk composition Ni = 10.03% (by ICP-AES), and trace elements (by ICP-MS, in µg/g) Ge = 31.28, Ga = 16.09, Ir = 0.22. Classification: Iron (IIIE). Specimens: 530 g of the sample is on deposit at GUT and 730 g at IGGCAS. The finder holds the main mass. Institutions and collections CAS: Chinese Academy of Sciences, Beijing, China. IGG: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China.