M come Meteorite Collection


Updated 10 April 2007

Provisional Number
Official Number
Total Mass
Locality
Find
Classification
001 NWA 873 62 gr. Erfoud 2001 Chondrite H4
002 NWA 874 22 gr. Erfoud 2001 Chondrite L5
003 NWA 875 22 gr. Erfoud 2001 Chondrite L6
004 NWA 876 48 gr. Erfoud 2001 Chondrite H5
005 NWA 877 28 gr. Erfoud 2001 Chondrite L5
006 NWA 878 20 gr. Erfoud 2001 Chondrite L4
007 NWA 879 80 gr. Erfoud 2001 Chondrite LL5
008 NWA 880 182 gr. Erfoud 2001 Chondrite H3.9
009 NWA 881 424 gr. Erfoud 2001 Chondrite H4
010 NWA 882 512 gr. Erfoud 2001 Chondrite L4
011 NWA 883 61.2 gr. Erfoud 2001 Chondrite LL5
012 NWA 884 110 gr. Erfoud 2001 Chondrite H5
013 NWA 885 106 gr. Erfoud 2001 Chondrite L5
014 NWA 886 24.4 gr. Erfoud 2001 Chondrite L5
015 NWA 887 17.5 gr. Erfoud 2001 Chondrite H4/6
016 NWA 888 74.6 gr. Erfoud 2001 Chondrite H4
017 NWA 889 70.6 gr. Erfoud 2001 Chondrite L5
018 NWA 890 56.8 gr. Erfoud 2001 Chondrite LL6
019 NWA 891 70.8 gr. Erfoud 2001 Chondrite H4
020 NWA 892 54.6 gr. Erfoud 2001 Chondrite H5
021 NWA 893 50.8 gr. Erfoud 2001 Chondrite L6
022 NWA 894 45.8 gr. Erfoud 2001 Chondrite L6
023 NWA 895 54 gr. Erfoud 2001 Chondrite H5
024 NWA 896 39.7 gr. Erfoud 2001 Chondrite L6
025 NWA 897 176 gr. Erfoud 2001 Chondrite L6
026 NWA 898 95.8 gr. Erfoud 2001 Chondrite L6
027 NWA 899 74.6 gr. Erfoud 2001 Chondrite LL6
028 NWA 900 616 gr. Erfoud 2001 Chondrite L3/6 Brecciated
029 NWA 901 278 gr. Erfoud 2001 Chondrite H5
030 NWA 902 158 gr. Erfoud 2001 Chondrite H4
031 NWA 903 500 gr. Erfoud 2001 Chondrite H3
032 NWA 975 1100 gr. Erfoud 2001 Chondrite L4
033 NWA 976 170 gr. Erfoud 2001 Chondrite L5
034 NWA 977 600 gr. Erfoud 2001 Chondrite L5
035 NWA 1051 88 gr. Erfoud 2001 Chondrite L5
036 NWA 1052 22 gr. Erfoud 2001 Achondrite Acapulcoite
037 NWA 1053 108 gr. Erfoud 2001 Chondrite L6
038 NWA 1054 86 gr. Erfoud 2001 Achondrite Acapulcoite
039 NWA 1055 132 gr. Erfoud 2001 Chondrite L4
040 NWA 1056 188 gr. Erfoud 2001 Chondrite H5
041 NWA 1057 124 gr. Erfoud 2001 Chondrite H4
042 NWA 1058 180 gr. Erfoud 2001 Primitive Achondrite Like Winonaite
043 NWA 1059 110 gr. Erfoud 2001 Chondrite L5
044 NWA 1060 112 gr. Erfoud 2001 Chondrite LL5
045 NWA 1061 112 gr. Erfoud 2001 Chondrite L6
046 NWA 1062 112 gr. Erfoud 2001 Chondrite H4
047 NWA 1063 78 gr. Erfoud 2001 Chondrite H4
048 NWA 1064 84 gr. Erfoud 2001 Chondrite H5
049 NWA 1065 56 gr. Erfoud 2001 Chondrite LL5
050 NWA 1066 132 gr. Erfoud 2001 Chondrite H5
051 NWA 1067 118 gr. Erfoud 2001 Enstatite Chondrite E6
052 NWA 1185 105 gr. Erfoud 2001 Chondrite H5
053 NWA 1186 196 gr. Erfoud 2001 Chondrite H5/6
054 NWA 1187 190 gr. Erfoud 2001 Chondrite H4/5
055 NWA 1188 82.6 gr. Erfoud 2001 Chondrite H4/5
056 NWA 1189 114 gr. Erfoud 2001 Chondrite L3.8/L6 Brecciated
057 NWA 1190 22.9 gr. Erfoud 2001 Carbonaceous Chondrite CR2
058 NWA 1243 35.9 gr. Erfoud 2002 Chondrite L5
059 NWA 1244 25.6 gr. Erfoud 2002 Chondrite L3.8/L6 Brecciated
060 NWA 1245 40.4 gr. Erfoud 2002 L3.8/L6 Brecciated
061 NWA 1246 44.3 gr. Erfoud 2002 L3.8/L6 Brecciated
062 NWA 1247 27.6 gr. Erfoud 2002 Chondrite L3.8
063 NWA 1248 102 gr. Erfoud 2002 Chondrite L3.8/L6 Brecciated
064 NWA 1249 64.8 gr. Erfoud 2002 L3.8/L6 Brecciated
065 NWA 1250 522 gr. Erfoud 2002 Chondrite L5 Veined
066 NWA 1251 122 gr. Erfoud 2002 Chondrite H5/6
067 NWA 1252 92 gr. Erfoud 2002 Chondrite H5/6
068 NWA 1253 50 gr. Erfoud 2002 Chondrite H4/5
069 NWA 1255 794 gr. Erfoud 2002 Chondrite L6
070 NWA 1256 42 gr. Erfoud 2002 Achondrite Ureilite Breccia Unquilibrated
071 NWA 1257 172 gr. Erfoud 2002 Chondrite H4/5
072 NWA 1258 72 gr. Erfoud 2002 Chondrite L5/6
073 NWA 1259 120 gr. Erfoud 2002 Chondrite L3.8/L6 Brecciated
074 NWA 1260 2518 gr. Erfoud 2002 Chondrite L3.8/L6 Brecciated
075 NWA 1261 118 gr. Erfoud 2002 Chondrite L5
076 NWA 1262 180 gr. Erfoud 2002 Chondrite L5
077 NWA 1263 74.4 gr. Erfoud 2002 Chondrite L4
078 NWA 1264 80 gr. Erfoud 2002 Chondrite L4/5
079 NWA 1265 198 gr. Erfoud 2002 Chondrite L6
080 NWA 1266 95.2 gr. Erfoud 2002 Chondrite L3/6
081 NWA 1267 200 gr. Erfoud 2002 Chondrite L5
082 NWA 1268 236 gr. Erfoud 2002 Chondrite L5
083 NWA 1269 62.2 gr. Erfoud 2002 Chondrite L5
084 NWA 1270 204 gr. Erfoud 2002 Chondrite L4/5
085 NWA 1271 94.2 gr. Erfoud 2002 Chondrite L6
086 NWA 1272 93.6 gr. Erfoud 2002 Chondrite L4/5
087 NWA 1273 220.48 gr. Erfoud 2002 Chondrite H5
088 NWA 1274 138.4 gr. Erfoud 2002 Chondrite H5
089 NWA 1275 597.1 gr. Erfoud 2002 Chondrite L6
090 NWA 1276 266 gr. Erfoud 2002 Chondrite L6
091 NWA 1254 281 gr. Erfoud 2002 Chondrite H5
092 NWA 1554 178 gr. Erfoud 2002 Chondrite L/H4
093 NWA 1555 50 gr. Erfoud 2002 Chondrite H5/6
094 NWA 1556 374 gr. Erfoud 2002 Chondrite L6
095 NWA 1557 124 gr. Erfoud 2002 Chondrite L/LL6
096 NWA 1698 698 gr. Erfoud 2002 Chondrite L5
097 NWA 1699 350 gr. Erfoud 2002 Chondrite L4/5
098 NWA 1700 95 gr. Erfoud 2002 Chondrite L5
099 NWA 1701 225 gr. Erfoud 2002 Chondrite LL5 Impact Melt Breccia
100 NWA 1702 220 gr. Erfoud 2002 Chondrite H6
101 NWA 1703 264 gr. Erfoud 2002 Chondrite L5
102 NWA 1704 166 gr. Erfoud 2002 Chondrite H5
103 NWA 1705 110 gr. Erfoud 2002 Chondrite L5
104 NWA 1706 148 gr. Erfoud 2002 Chondrite L6
105 NWA 1707 522 gr. Erfoud 2002 Chondrite L4
106 NWA 1708 11.1 gr. Erfoud 2002 Chondrite L5
107 NWA 1709 9.5 gr. Erfoud 2002 Chondrite H3.??
108 NWA 1710 5.6 gr. Erfoud 2002 Chondrite LL4
109 NWA 1807 274 gr. Erfoud 2002 Carbonaceous Chondrite CV3
110 NWA 1808 684 gr. Erfoud 2002 Chondrite H5 Impact Melt Breccia
111 NWA 1809 214 gr. Erfoud 2002 Chondrite LL6
112 NWA 2045 19 gr. Erfoud 2003 Chondrite LL3
113 NWA 2176 1200 gr. Erfoud 2003 Chondrite LL
114 NWA 2177 74.8 gr. Erfoud 2003 Achondrite Eucrite
115 NWA 2179 367.2 gr. Erfoud 2003 Chondrite H3
116 NWA 2180 369.3 gr. Erfoud 2003 Carbonaceous Chondrite CV3
117 NWA 2350 141.5 gr. Erfoud 2003 Chondrite H4
118 NWA 2513 17.78 gr. Erfoud 2003 Chondrite LL5
119 NWA 2514 6.58 gr. Erfoud 2003 Chondrite H4
120 NWA 2804 192.3 gr. Erfoud 2005 In analysis
121 NWA 2805 224.4 gr. Erfoud 2005 In analysis
122 NWA 2806 148.4 gr. Erfoud 2005 Chondrite H Melt
123 NWA 3211 89.2 gr. Erfoud 2005 Achondrite Eucrite
124 NWA 3212 176.6 gr. Erfoud 2005 Achondrite Eucrite
125 NWA 3213 147 gr. Erfoud 2005 Mesosiderite
126 NWA 3214 435.2 gr. Erfoud 2005 Carbonaceous Chondrite CV3
127 NWA 3215 96.5 gr. Erfoud 2005 In analysis probably pseudometeorite
128 NWA 4221 1300 gr. Erfoud 2006 In analysis
129 NWA 4222 16.55 gr. Erfoud 2006 In analysis Martian
130 NWA 4280 365.1 gr. Erfoud 2006 In analysis
131 NWA 4281 40.95 gr. Erfoud 2006 In analysis
132 NWA 4415 10 gr. Erfoud 2006 In analysis Probably Enstatite
133 NWA 4416 259.1 gr. Erfoud 2006 In analysis Probably Enstatite
134 NWA 4417 90.1 gr. Erfoud 2006 In analysis Probably H7
135 NWA 4418 103.75 gr. Erfoud 2006 In analysis Probably Mesosiderite
136 NWA 4419 103.15 gr. Erfoud 2006 In analysis Probably R Chondrite
137 NWA 4428 301.4 gr. Erfoud 2006 In analysis
138 NWA 4537 103 gr. Erfoud 2006 In analysis probable Aubrite

 



NWA 903

Found 2001

Ordinary chondrite H3

Several stones were bought at Erfoud market by an anonymous buyer. Classification and mineralogy (G.Pratesi, V.Moggi-Cecchi, A. Salvadori, MSP: petrography and EMPA; G. Sighinolfi and S. Lugli, UMo: EMPA): the meteorite consists of chondrules 300-600 m in size, of different types (PO, POP, BO, RP) and their fragments embedded in a fine-grained matrix; olivine is Fa1.62-35.17, with an average of Fa14.85; olivine compositions vary continuously between these two values. The mean value and the amount of Fe,Ni alloy suggest a classification as H chondrite. Low-Ca pyroxenes range from Fs4.26En92.95Wo1.34 to Fs17.36En82.16Wo0.48. A diopsidic pyroxene (SiO2 50.57, Al2O3 10.49, MgO 9.99, CaO 7.98 wt. %; SiO2 49.80, Al2O3 1.79, MgO 20.48, CaO 1.25 wt. %) has been found, too. Minor phases are kamacite, taenite and troilite; some olivine grains in BO and PO chondrules are markedly zoned and contain a glassy mesostasis. Compositional data on olivine point to a petrological subtype <3.5. Weathering grade is W3; shock stage is S1. Specimens: one thin section and 28.9 g, MSP; main mass (500 g) with anonymous buyer.


NWA 1052

Morocco

Found 2001

Acapulcoite

A stone of 22 g was bought in Erfoud (Morocco) by Matteo Chinellato. Classification and mineralogy (G.Pratesi, V.Moggi-Cecchi, L. Mancini, MSP: petrography and EMPA; G. Sighinolfi and S. Lugli, UMo: EMPA): either thin section and type specimen sample look to be composed by a fine grained aggregate. In thin section it displays an granular texture with grains mainly represented by olivine, pyroxene, Fe,Ni alloy and troilite and ranging from 200 to 700 m in dimensions. Olivine is homogeneous and has a typical forsteritic composition, (Fa = 5.95 mol %); orthopyroxene is bronzitic (Fs = 7.60, Wo = 1.44 mol %). High Ca-pyroxene (Fs = 3.63, En = 51.11, Wo = 45.26, Al-px = 1.44 mol %) and plagioclase (An = 13.73, Ab = 79.90, Or = 6.37 mol %) are also common. Apart from silicates, major phases are metal and troilite. Accessory phases include Na- and Ca-Merrillite and magnesiochromite (Cr/(Cr+Al) = 0.91; Fe:Mn:Mg ratios = 0.58:0.09:0.33). Nichelphosphide grains with an anomalous composition, pointing to a (Ni,Fe)4P formula have been found, too. This meteorite shows a recrystallization texture with abundant 120 triple junctions and many interstices filled with metal. Based on texture (fine coarsed), mineralogy and chemistry (Cr content of diopside varying from 1.18 to 1.43 wt. %) the meteorite is classified as an acapulcoite. Terrestrial weathering grade is rather low (W1); optical features (sharp extinction of olivine) indicate that the sample is very weakly or not shocked (S1). Specimens: main mass with buyer (Matteo Chinellato); type specimen (4.7 g) and thin section, MSP.


NWA 1054

Morocco

Found 2001

Acapulcoite

A stone of 86 g was bought in Erfoud (Morocco) by an anonymous dealer. Classification and mineralogy (G.Pratesi, V.Moggi-Cecchi, L. Mancini, MSP: petrography and EMPA; G. Sighinolfi and S. Lugli, UMo: EMPA): either thin section and type specimen sample look to be composed by a fine grained aggregate. In thin section it displays an granular texture with grains mainly represented by olivine, pyroxene, Fe,Ni alloy and troilite and ranging from 200 to 700 m in dimensions. Olivine is homogeneous and has a typical forsteritic composition, (Fa = 6.37 mol %); orthopyroxene is bronzitic (Fs = 7.77, Wo = 1.32 mol %). High Ca-pyroxene (Fs = 3.33, En = 51.23, Wo = 45.44, Al-Px = 1.50 mol %) and plagioclase (An = 14.27, Ab = 79.47, Or = 6.25 mol %) are also common. Apart from silicates, major phases are metal and troilite. Accessory phases include Na-Merrillite and magnesiochromite (Cr/(Cr+Al) = 0.96; Fe:Mn:Mg ratios = 0.60:0.12:0.28). Nichelphosphide grains with an anomalous composition, pointing to a (Ni,Fe)4P formula have been found, too. This meteorite shows a recrystallization texture with abundant 120 triple junctions and many interstices filled with metal. Based on texture (fine coarsed), mineralogy and chemistry (Cr content of diopside varying from 1.17 to 1.35 wt. %) the meteorite is classified as an acapulcoite. Terrestrial weathering grade is rather low (W1); optical features (sharp extinction of olivine) indicate that the sample is very weakly or not shocked (S1). Specimens: main mass with buyer; type specimen (17.9 g) and thin section, MSP.


NWA 1807

Morocco

Found 2002

Carbonaceous chondrite (CV3)

A stone of 274 g was bought in Erfoud (Morocco) by Mr. Matteo Chinellato. The main mass, weighing 54.5 g, has no crust. Classification and mineralogy (G.Pratesi, V.Moggi Cecchi, MSP): a cut surface on the type specimen displays rather large chondrules and some small white spots. In thin section many chondrules of various kinds (POP, PO, BO, RP) accounting for ~50% vol. and ranging from 500 to 1200 m are visible, set in a fine intergrowth of microporphyric orthopyroxenes. Olivine composition ranges from Fa0.83 to Fa5.03 mol. % in the chondrules and reaches Fa49.72 out of them. Orthopyroxene is enstatitic (En98.14, Wo1.06). An augitic pyroxene is also present (Fs15.54-28.61, En25.12-36.97, Wo46.12-47.49). Chondrules glass is anorthitic (An84.67, Ab15.3 mol. %). Fe,Ni alloy and troilite are rather uncommon (less than 5% vol.). Rare apatite grains and CAIs are present. Oxygen isotope measurements (I.Franchi, R.Greenwood, Open University) d17O = -1.643 d18O = 2.524; D17O = -2.955 plot on the end of the CV range. Based on texture, mineralogy, chemistry and OI data, the meteorite is classified as a CM2 carbonaceous chondrite. Terrestrial weathering grade is rather low (W1); optical features indicate a low shock stage (S1). Specimens: main mass with buyer; type specimen (20.5 g) and thin section, MSP.


NWA 1808

Morocco

Found 2002

H5, impact melt breccia

A dark brown stone of 684 g was bought in Erfoud (Morocco) by an anonymous buyer. Classification and mineralogy (G.Pratesi, V.Moggi Cecchi, MSP): the main mass has no crust and a large metal vein on its surface. A cut surface on the type specimen displays areas with a marked difference in the amount of metal and seems to be composed by two different portions: a fine grained one and a coarse grained one. In thin section the fine grained part shows a re-crystallization texture with few grains of residual metal and olivine in a matrix of feldspatic glass (An = 17.62, Ab = 77.49, Or = 4.88 mol. %) containing very fine grained olivine and pyroxenes crystals; metal pools and droplets shows fringes substituting the outstanding glass. The coarse grained portion presents a typical chondritic texture: major phases are olivine and low-Ca pyroxene (Fa = 18,96 mol. %; Fs = 16,31, En = 82,03, Wo = 1.67 mol %), metal and troilite. Based on texture, mineralogy and chemistry of the coarse grained portion, the meteorite is classified as an H chondrite impact melt breccia. Terrestrial weathering grade is absent (W0); optical features (undulatory extinction of olivine) indicate that the sample is rather distinctly shocked (S3). Specimens: main mass with buyer; type specimen (20.1 g) and thin section, MSP.


NWA 2045

Found 2003

Ordinary chondrite LL3

One stone weighing 19 g was bought at Erfoud market by an anonymous buyer. Mineralogy and classification (G.Pratesi, V.Moggi Cecchi, MSP)): the meteorite consists of chondrules 500-700 m in size, of different types (PO, POP, BO, RP) and their fragments embedded in a fine-grained matrix; olivine is Fa29.83-43.73, PMD 22%, the average is Fa35.64; mean low-Ca pyroxene is Fs24.87En73.57Wo1.57; minor phases are pigeonite, (Fs9.40En45.72Wo44.88), augite, kamacite, taenite and troilite; POP and PO chondrules are moderately zoned and contain a glassy mesostasis. Compositional data on olivine point to a petrological subtype 3.8/3.9. Weathering grade is W3; shock stage is S2. Specimens: one thin section and 3.7 g, MSP; main mass with anonymous buyer.


NWA 2179

Found 2003

Ordinary chondrite H3

Several stones weighing in total 367.2 g was bought at Erfoud market by an anonymous buyer. Mineralogy and classification (G.Pratesi, V.Moggi Cecchi, MSP)): the meteorite consists of chondrules 500-700 m in size, of different types (PO, POP, BO, RP) and their fragments embedded in a fine-grained matrix; olivine is Fa0.81-18.38, with an average of Fa6.68; two clusters of analyses, with mean values at Fa1.53 and Fa12.02, respectively, can be delineated for chondrule olivines, pointing to a classification as H chondrite. Low-Ca pyroxenes range from Fs6.13En93.07Wo0.80 to Fs21.01En78.17Wo0.83, in good agreement with olivine data; minor phases are pigeonite, kamacite, taenite and troilite; some olivine grains in BO and PO chondrules are markedly zoned and contain a glassy mesostasis. Compositional data on olivine point to a petrological subtype <3.5. Weathering grade is W2; shock stage is S1. Specimens: one thin section and 29.4 g, MSP; main mass (88.8 g) with anonymous buyer.


NWA 2180

Morocco

Found 2002

Carbonaceous chondrite

A number of stones, totally weighing 369.3 g was bought in Erfoud (Morocco) by an anonymous buyer. The main mass is weighing 51.4 g. Classification and mineralogy (G.Pratesi, V.Moggi Cecchi, MSP): a cut surface on the type specimen displays rather large chondrules and some small white spots. In thin section several chondrules of various kinds (POP, PO, BO, RP) accounting for ~50% vol. and ranging from 500 to 600 m are visible, set in a fine intergrowth of microcrysts of phyllosilicates. Two clusters of olivine composition ranging from Fa0.18 to Fa9.93 mol. % and from Fa31.32 to Fa44.49 mol. % in the chondrules. A mean value of . Orthopyroxene is enstatitic (En98.10, Wo1.09). A pigeonitic pyroxene with variable composition is also present (Fs0.95-0.45, En59.42-93.22, Wo39.63-6.33). Chondrules glass is anorthitic (An90.33, Ab9.67 mol. %). Fe,Ni alloy and troilite are rather uncommon (less than 5% vol.). Rare apatite grains and CAIs are present. Oxygen isotope measurements (I.Franchi, R.Greenwood, Open University) O16/O18 = . Based on texture, mineralogy, chemistry and OI data, the meteorite is classified as a . carbonaceous chondrite. Terrestrial weathering grade is rather low (W1); optical features indicate a low shock stage (S1). Specimens: main mass with buyer; type specimen (20.5 g) and thin section, MSP.