| ACAPULCOITES/LODRANITES (5 metamorphic subgroups after Floss, 2000; Patzer et al., 2003) |
| 1. Primitive Acapulcoites [Se >12–13 ppm] (e.g. GRA 98028, Y-74063, Monument Draw, Dhofar 1222) |
| 2. Typical Acapulcoites [Se ~5–12 ppm] (e.g. Acapulco, Dho 125 and pairings, Dho 290, Dho 312, ALH 78230, ALHA81261, FRO 95029, TIL 99002, NWA 2775, NWA 2656 and pairings) |
| 3. Transitional Acapulcoites [Se <5 ppm] (e.g. EET 84302, LEW 86220, ALHA81187, GRA 95209, NWA 2627, FRO 93001, MAC 041193) |
| 4. Lodranites [K <200 ppm, Grain size 500+ µm] (e.g. Lodran, MAC 88177, GRA 95209, NWA 2235, NWA 3341, NWA 4448, NWA 4478 [brec], NWA 4529, NWA 4663, NWA 4833, NWA 4875 [possibly paired with NWA 4478]) |
| 5. Enriched Acapulcoites [addition of feldspar-rich melt] (e.g. LEW 86220, FRO 93001) |
| WINONAITES(3 metamorphic subgroups adapted from Floss, 2000; Patzer et al., 2003) |
| 1. Primitive Winonaites (e.g. NWA 725, NWA 1058, NWA 1457, NWA 1463, Pontlyfni, NWA 516) |
| 2. Typical Winonaites (e.g. Winona, Tierra Blanca, NWA 1617, Fortuna, HaH 193) |
| 3. Evolved Winonaites (e.g. NWA 2993) |
| SILICATE INCLUSIONS IN IRONS (Includes silicates from the IAB complex (e.g. Caddo County, Four Corners, Landes, NWA 468), and from groups IIE (e.g. Netshaëvo, Watson, Techado) and IVA (e.g. Steinbach, São João Nepumuceno)) |
| UNGROUPED PACS (e.g. Tafassasset [possibly CR-related], Sah 03500, Dhofar 500) |
| HOWARDITES (e.g. Kapoeta, Old Homestead 001, NWA 1182, Luotolax) |
| EUCRITES (2 subdivisions) |
| 1. Monomict/Unbrecciated (2 divisions) |
| A. Gabbroic, Cumulate (e.g. Moore Co., Serra de Magé, Binda, Talampaya, Vissannapeta, NWA 1828, NWA 1836, NWA 1925) |
| B. Basaltic, Non-cumulate (2 series) |
| i. Main Group–Nuevo Laredo Trend (e.g. Sioux County, Camel Donga, Agoult, NWA 999, NWA 3152, Nuevo Laredo, Lakangaon, Igdi, Sah 02501) |
| ii. Stannern Trend (e.g. Stannern, Bouvante, LEW 88010, PCA 82501, NWA 4523) |
| 2. Polymict, <10% diogenitic (e.g. Millbillillie, Padvarninkai, Smara, NWA 049, Dho 007, PCA 91006) |
| DIOGENITES (2 subdivisions) |
| 1. Monomict/Unbrecciated (2 divisions) |
| A. Non-olivine- to olivine-bearing (up to 5 vol% olivine) (e.g. LAP 02216, LEW 88679, MET 00424, Johnstown, Tatahouine [unbr], Bilanga, NWA 1821, Dhofar 778, NWA 3106, NWA 3329, unclassified) |
| B. Olivine Diogenites (>5 vol% olivine) (e.g. NWA 1459, NWA 1877 and pairings, GRA 98108, LAP 03979, ALHA77256, MIL 03443, NWA 4223, NWA 5480) |
| 2. Polymict (e.g. NWA 1239, Aioun el Atrouss, Garland, NWA 1648, NWA 2047, NWA 2059, NWA 2923) | DUNITE (e.g. NWA 2968, possibly QUE 93148 and MIL 03443) |
| MONOMICT/UNBRECCIATED (3 mineralogical types) |
| 1. Olivine-Pigeonite (ferroan: e.g. Novo Urei, Kenna, Haverö, DaG 084, DaG 868, Dhofar 979, NWA 2624; intermediate: e.g. Hajmah (a) Dingo Pup Donga) |
| 2. Olivine–Orthopyroxene (magnesian: e.g. LEW 85440/88102/88201/88281, Y-74659, Y-791538, EET 87517, EET 87511/87523/87717/96262/96322/96328, MET 01085) |
| 3. Olivine–Augite (magnesian: e.g. ALH 82130/82106/84136, EET 96293/96314/96331, FRO 90054/90228/90233/93008, HaH 064, Hughes 009, LEW 88774, META78008, Y-74130, NWA 1500) |
| POLYMICT (e.g. North Haig, Nilpena, DaG 319~DaG 665~DaG 164/165, Reid 016, EET 83309) |
| SHERGOTTITES (4 subgroups) |
| 1. Basaltic (olivine-poor) (e.g. Shergotty, Zagami, EETA79001B, Los Angeles, Dho 378, NWA 480/1460, NWA 1669, NWA 3171) |
| 2. Olivine-phyric (e.g. EETA79001A, Dho 019, SaU 005 and pairings, NWA 1068 and pairings, Y-980459) |
| 3. Olivine–orthopyroxene-phyric (e.g. NWA 1195, NWA 2046, DaG 476 and pairings) |
| 4. Pyroxene-peridotitic/Wehrlitic (only NWA 4797) |
| Symes et al. (2008) present an alternative classification scheme for the shergottites (including some lherzolites) based on trace element abundances, Sr–Nd isotopic systematics, and other petrogenetic trends. |
| LHERZOLITES (pyroxene-peridotites) (e.g. ALHA77005, Y-793605, LEW 88516, YA1075, GRV 99027, GRV 020090, NWA 1950, Y-000027 and pairings, RBT 04261/04262) lherzolite related (e.g. NWA 2646 [olivine gabbro or plag-ol-cpx], RBT 04262) |
| NAKHLITES (clinopyroxenites) (e.g. Nakhla, Lafayette, Governador Valadares, NWA 817, Y-000593/749/802, NWA 998, MIL 03346) |
| CHASSIGNITES (dunites) (Chassigny, NWA 2737) |
| ORTHOPYROXENITE (only ALH 84001) |
| 1. FELDSPATHIC BRECCIAS (4 [or more] lithological types) |
| a: Regolith breccia (e.g. DaG 262) |
| b: Fragmental breccia (e.g. Dho 081) |
| c: Impact melt breccia (e.g. NWA 482, Dho 302 and pairings) |
| d: Granulitic brecia (e.g. NWA 4483 and pairings) |
| 2. MAFIC, Th-RICH, IMPACT MELT BRECCIAS (e.g. SaU 169 [KREEP-rich w/ 13 vol% 2a component; 32.7 ppm Th], NWA 4472/4485 [KREEP-rich; 6.9 ppm Th], Dhofar 925/960/961 [KREEP components; ~2 ppm Th]) |
| 3. MINGLED BRECCIAS (2 divisions) |
| a: Predominantly feldspathic (e.g. Dho 1180 [KREEP clast; 0.9 ppm Th], Calcalong Creek [25% KREEP-norite; 4.3 ppm Th], Y-983885 [KREEP clasts; 2 ppm Th], NWA 2995, SaU 169) |
| b: Predominantly basaltic (e.g. Apollo 15 & 17 regolith samples, QUE 94281, NWA 3136, Kalahari 009, NWA 773 and pairings [w/ 1a, 1b, 3, and KREEP-rich components]) |
| 4. MARE BASALTS (unbrecciated) (e.g. NWA 032/479, Dho 287 [w/ 5 vol% 2a component], NEA 003, LAP 02205 and pairings, NWA 4683/4734, NWA 4898) |
| ANGRITES (2 metamorphic subgroups) |
| 1. Plutonic/Metamorphic (e.g. LEW 86010, Angra dos Reis, NWA 2999 and pairings, NWA 4590, NWA 4801) |
| 2. Basaltic/Quenched (e.g. LEW 87051, Asuka 881371, Y-1154, Sah 99555, D'Orbigny, NWA 1296, NWA 1670) |
| BRACHINITES (Brachina, Reid 013 [a portion under the synonyms Nova 003 and Window Butte], Reid 027, Eagles Nest, Hughes 026, ALH 84025, EET 99402/407, NWA 595, NWA 3151, LEW 88763 [probably ACA], NWA 4872, NWA 4874, NWA 4876, NWA 4882, NWA 4969 [possibly paired with 4882], NWA 5191 [possibly paired with NWA 3151], NWA 5471) |
| AUBRITES (e.g. Aubres, Mount Egerton, Mayo Belwa, Peña Blanca Spring, NWA 4537, NWA 4799, NWA 4832, NWA 4871 [possibly paired with NWA 4799], NWA 5217)) |
| UNGROUPED ACHONDRITES (e.g. Ibitira, Pasamonte, A-881394, NWA 1235, NWA 011, Shallowater, NWA 1840, NWA 4042, Divnoe, Zag (b), Dhofar 732) |
| 1A (e.g. Vaca Muerta, Crab Orchard, Patwar, Mount Padbury, Barea) |
| 1B (e.g. Chinguetti, ALHA77219 and pairings) |
| 2A (e.g. Clover Springs, Veramin, NWA 1242) |
| 2B (reclassified as 4B) |
| 2C (NWA 1827 and pairings, JaH 203) |
| 3A (e.g. Emery, Lowicz, NWA 1961) |
| 3B (reclassified as 4B) |
| 4A (e.g. Estherville[3/4A]) |
| 4B (e.g. Bondoc, Mincy, NWA 1817 and pairings) |
| Others (DaG 962) |
| 1a.PMG (main-group) (e.g. Imilac, Esquel, Theil Mountains, Albin, Marjalahti, Mount Vernon, Seymchan, Hambleton, Thumrayt 001) |
| 1b..PMG-am (main-group, anomalous metal) (e.g. Pavlodar [Au], Omolon [kamacite], Glorieta Mountain [Ge, Ga], Huckitta [Ge, Ga, Pt, W, Ir], Brenham [Ge, Ga], Krasnojarsk [Co, As, Sb, Ni, Cu], Argonia [Ir], CMS 04071 [Au, Ge]) |
| 1c..PMG-as (main-group, anomalous silicates) (e.g. Springwater [Fa, P-ol], Rawlinna [Fa, Ni, Co, Cu, P-ol], Phillips County [Fa, FeS, Ni], Zaisho [Fa, P-ol]) |
| 2.Eagle Station Grouplet (PES) (Eagle Station, Cold Bay, Itzawisis) |
| 3.Pyroxene Grouplet (PYX) (Y-8451, Zinder, NWA 1911) |
| Ungrouped Pallasites (e.g. Milton [ung], NWA 2683 [ung]) |
| IAB complex (Wasson and Kallemeyn, 2002) |
| 1. main group (e.g. Canyon Diablo, Landes, Campo del Cielo, Odessa) |
| 2. subgroup sLL (e.g. Toluca, Deport) |
| 3. subgroup sLM [formerly IIIC](e.g. Carlton, Lamesa, Maltahöhe) |
| 4. subgroup sLH [formerly IIID](e.g. Tazewell, Dayton, Freda) |
| 5. subgroup sHL (e.g. Lonaconing, Sombrerete, NWA 2428) |
| 6. subgroup sHH (e.g. Mount Magnet, Garden Head, Gay Gulch, Kofa) |
| 7. Udei Station grouplet (e.g. Udei Station, Caddo County, Four Corners, Zagora) |
| 8. Pitts grouplet (e.g. Pitts, Woodbine) |
| 9. Algarrabo duo (Algarrabo, Livingston) |
| 10. Mundrabilla duo (Mundrabilla, Waterville) |
| 11. Britstown duo (Britstown, EET 87506) |
| 12. NWA 468 duo (NWA 468, GRV 98003) |
| 13. Twin City duo (Twin City, Santa Catharina) |
| 14. IAB-related irons (e.g. Vermillion, Oktibbeha County, Georgetown) |
| IC (e.g. Arispe) |
| IIAB (e.g. Guadalupe y Calvo, Carver, Coahuila, Sikhote Alin) |
| IIC (e.g. Perryville, Salt River, Wiley) |
| IID (e.g. Carbo, Needles) |
| IIE (McCoy, 1995) |
| 1. primitive IIE (e.g. Netshaëvo, Techado, Watson, Y-791093 [trans.]) |
| 2. differentiated IIE (e.g. Miles, Kodaikanal, Colomera, Elga, Barranca Blanca, Weekeroo Station, Arlington, Mont Dieu) |
| IIF (e.g. Monahans (1938), Del Rio) |
| IIG (Tombigbee River, Bellsbank, Twannberg, La Primitiva, Guanaco) |
| IIIAB (e.g. (IIIA) Cape York, Wabar, Willamette; (IIIB) Tambo Quemado) |
| IIIE (e.g. Coopertown, Willow Creek) |
| IIIF (e.g. St. Genevieve Co., Nelson Co., Klamath Falls) |
| IVA (e.g. Gibeon, Page City, Bishop Canyon, Steinbach [An], Säo Joäo Nepomuceno [An], NWA 5289) |
| IVB (e.g. Santa Clara, Hoba) |
| UNGROUPED/UNCLASSIFIED IRONS (e.g. Tucson [ung], Taza [ung], NWA 176 [ung], ‘NWA GREN’ [unclassified]) |
© 1997–2009 by David Weir