M27.20141001

On 28 Apr, 2020 By rosenfel@chass....
  1. RASC M27.20141001
  2. Almahata Sitta, Ureilitean, Nubian Desert, Sudan (20° 44′ 45" N, 32° 24′ 46" E), fall 2008, 3.95 kg.
  3. anonymous gift 2014 October 1
  4. fragment, φ scale = 0 to –1 (Wentworth size class=very coarse sand), 0.16 × 0.12 × 0.1 cm
  5. 0.01 gr.
  6. ...
  7. Colour range: 5YR 7/6 (Reddish Yellow) to N 2.5/ (Black)
  8. good
  9. not previously published
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    M26.20141001

    On 28 Apr, 2020 By rosenfel@chass....
    1. RASC M26.20141001
    2. Weston, ordinary chondrite (H4), Connecticut, USA (41° 16′N, 73° 16′W ), fall 1807, 150 kg.
    3. anonymous gift 2014 October 1
    4. fragment, φ scale = 1 to 0 (Wentworth size class=coarse sand), 0.1 × 0.08 × 0.05 cm
    5. 0.012 gr.
    6. ...
    7. colour range: 2.5Y 8/1 White to N3/ Very Dark Gray
    8. good
    9. not previously published;
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      M25.20141001

      On 28 Apr, 2020 By rosenfel@chass....
      1. RASC M25.20141001
      2. Buzzard Coulee, ordinary chondrite (H4), Saskatchewan, Canada (52° 59′ 46′′N, 109° 50′ 53′′W ), fall 2008, 41 kg.
      3. anonymous gift 2014 October 1
      4. 4 fragments; range of fragment sizes, φ scale=1 to -2 (Wentworth size classes=coarse sand to very fine gravel), 0.05-0.35 cm
      5. 0.051 gr.
      6. colour range: N 7/ (Light Gray) matrix, with 2.5Y 8/1 White to N3/ Very Dark Gray chondrules
      7. good
      8. not previously published
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        M24.20141001

        On 28 Apr, 2020 By rosenfel@chass....
        1. RASC M24.20141001
        2. Lone Island Lake, medium octahedrite (IAB-sLL), Manitoba, Canada (50°0′34" N, 95° 23′7" W), find 2005, 4.8 kg.
        3. anonymous gift 2014 October 1
        4. fragment, φ scale= –1 to –2 (Wentworth size class=very fine gravel), 0.36 × 0.24 × 0.12 cm
        5. 0.08 gr.
        6. ...
        7. colour range: 5Y 2.5/1. This specimen is iron shale
        8. good
        9. not previously published
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          M23.20141001

          On 28 Apr, 2020 By rosenfel@chass....
          1. RASC M23.20141001
          2. Abee, enstatite chondrite (EH4), Alberta, Canada (54°13′N, 113°W ), fall 1952 June 9, 107 kg.
          3. anonymous gift 2014 October 1
          4. 3 fragments; range of fragment sizes φ scale = –2 to 2 (Wentworth size class=very fine gravel to fine sand), 0.06–0.30 cm
          5. 0.051gr.
          6. ...
          7. colour range: 2.5Y 2.5/1 Black to 2.5Y 7/1 Light Gray matrix, with sparse inclusions at 2.5Y 8/3 Pale Yellow (Munsell)
          8. good, but friable as per this type
          9. not previously published
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            M22.20110131

            On 28 Apr, 2020 By rosenfel@chass....
            1. RASC M22.20110131;
            2. Northwest Africa 869 (NWA 869), L 4-6 Ordinary Chondrite, “Northwest Africa,” find 2000 (or 2001), 2000 kg;
            3. Anonymous gift 2011 January 31;
            4. 1.1 x 0.93 x 0.77 cm;
            5. 1.41 gr;
            6. Irregular prolate “spherule”;
            7. Pebble, with intact fusion crust and discernible regmaglypts;
            8. Good;
            9. Not previously published;
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              M21.20110131

              On 28 Apr, 2020 By rosenfel@chass....
              1. RASC M21.20110131;
              2. Northwest Africa 6080 (NWA 6080), LL4 Ordinary Chondrite, "Northwest Africa,” find 2008, 6.33 kg;
              3. Anonymous gift 2011 January 31;
              4. 2 fragments: a) 1.025 x 1.0 x 0.5 cm; b) 0.3 x 0.19 x 0.16 cm;
              5. a) 0.667 gr; b) 0.19 gr;
              6. Irregular forms;
              7. a) has one polished face;
              8. Good;
              9. Not previously published;
                1. IMCA EoM www.encyclopedia-of-meteorites.com/meteorite.aspx?id=51489 ;
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              M20.20110131

              On 28 Apr, 2020 By rosenfel@chass....
              1. RASC M20.20110131;
              2. Gao-Guenie, H5 Ordinary Chondrite, Gao and Guenie, Burkina Faso (11° 39' N, 2° 11' W), fall 1960 March 5 (note: the “second” fall date of April 1960 may be spurious), ? kg;
              3. Anonymous gift 2011 January 31; 4. 1.8 x 1.1 x 0.35 cm;
              4. ...
              5. 1.41 gr;
              6. Slice;
              7. ...
              8. Fair;
              9. Not previously published;
                1. Grady (2000), 211;
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              M19.20110131

              On 28 Apr, 2020 By rosenfel@chass....
              1. RASC M19.20110131;
              2. Tatahouine, Diogenite, Tatahouine, Tunisia (32° 57' N, 10° 25' E), fall 1931 June 27, 12 kg;
              3. Anonymous gift 2011 January 31;
              4. 3 fragments:
                1. 0.54 x 0.35 x 0.30 cm;
                2. 0.45 x 0.38 x 0.34 cm;
                3. 0.45 x 0.15 x 0.14 cm;
              5. 0.131 gr.;
              6. Irregular forms;
              7. ...
              8. Stable;
              9. Not previously published;
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                M18.20110131

                On 28 Apr, 2020 By rosenfel@chass....
                1. RASC M18.20110131;
                2. Vaca Muerta, Mesosiderite-A1, Taltal, Antofagasta, Atacama Desert, Chile (25° 45' S, 70° 30' W), find 1861, 3828 kg;
                3. Anonymous gift 2011 January 31;
                4. 10 fragments;
                  • longest fragment 27. 0.57 x 0.46 x 0.10 cm;
                  • widest fragment 0.549 x 0.50 x 0.16 cm;
                  • thickest fragment 0.35 x 0.385 x 0.20 cm;
                5. 0.23 gr.
                6. Irregular forms;
                7. Weathering crusts;
                8. Stable;
                9. Not previously published;
                  1. Grady (2000), 508;
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