M29.20141001

On 28 Apr, 2020 By rosenfel@chass....
  1. RASC M29.20141001
  2. Lahoma, ordinary chondrite (L5), Oklahoma, USA (36° 23′N, 98° 5′W ), find 1963, 21.8 kg.
  3. anonymous gift 2014 October 1
  4. ca. 15 fragments, φ scale=1 to –2 (Wentworth size class=coarse sand to very fine gravel), 0.06-0.26 cm.
  5. 0.028 gr.
  6. ...
  7. colour range: N 2.5/ (Black) matrix
  8. good
  9. not previously published
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    M28.20141001

    On 28 Apr, 2020 By rosenfel@chass....
    1. RASC M28.20141001
    2. Chelyabinsk, ordinary chondrite (LL5), Chelyabinskaya oblast’, Russia (54° 49′N, 61° 7′E), fall 2013, 1 t.
    3. anonymous gift 2014 October 1;
    4. 3 fragments, φ scale=1 to –3 (Wentworth size class=coarse sand to fine gravel), 0.09–0.53 cm.
    5. 0.017 gr.
    6. ...
    7. colour range: N 7/ (Light Gray) matrix, with N 4/ (Dark Gray) chondrules. Fusion crust on the two largest fragments, colour N 2.5/ (Black)
    8. Excellent
    9. not previously published
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      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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