I7.20091130

  1. RASC I7.20091130;
  2. Shattercone (quartz arenite), Sudbury Impact Structure (46°36'N, 81°11'W), 1850±3Ma;
  3. Anonymous gift 2009 November 30;
  4. 15 x 10 x 3.8 cm;
  5. 680 gr;
  6. Lightly to moderately defined striae (better detailed than in RASC I6), and apical features present;
  7. Light-yellow exterior colouration, with an overlay of light-grey weathering product over most of the faces;
  8. Good state of preservation;
  9. Not previously published;
    Continue Reading

    I6.20091130

    1. RASC I6.20091130;
    2. Shattercone (quartz arenite), Sudbury Impact Structure (46°36'N, 81°11'W), 1850±3Ma;
    3. Anonymous gift 2009 November 30;
    4. 12.9 x 12 x 4.7 cm;
    5. 760 gr;
    6. Lightly defined striae (less well detailed than in RASC I5), and apical features present;
    7. Rosé and light–yellow exterior colouration, dark weathering product over ca. 65% of faces. Abrasions to weathering layer reveal brighter yellow colour of rock;
    8. Good state of preservation;
    9. Not previously published;
    Continue Reading

    I5.20091130

    1. RASC I5.20091130;
    2. Shattercone (charnokitic gneiss), Charlevoix Impact Structure, Charlevoix, Quebec (47°32'N, 70°18'W), 342±15Ma;
    3. Anonymous gift 2009 November 30;
    4. 23.55 x 15 x 6 cm;
    5. 2250 gr;
    6. Specimen displays discernible horsetailing (lightly to moderately well-defined striae), indications of a cross-sectional curve, and apical features;
    7. Obscuring yellowish light-brown weathering product over most of the faces. Fractures reveal the characteristic light and dark foliated bands of the underlying rock;
    Continue Reading

    I4.20091130

    1. RASC I4.20091130;
    2. Shattercone (Malmian Limestone), Steinheim Impact Structure, Baden-Württemberg (48°41N, 10°4E), 15±1Ma;
    3. Anonymous gift 2009 November 30;
    4. 3.47 x 2.55 x 0.91 cm;
    5. 7.2 gr;
    6. Irregular fan-shaped;
    7. Faces with long surface exposure have a light tan patina and occasional surface speckling caused by an overlay of dark material (lichen?). Relatively recently exposed faces are chalk-white in appearance. All surfaces have a typical mild abrasive feel;
    8. Good state of preservation;
    Continue Reading

    I3.20091130

    1. RASC I3.20091130;
    2. Black Onaping (Suevite), Sudbury Impact Structure (46°36N, 81°11W), 1850±3Ma;
    3. Anonymous gift 2009 November 30;
    4. 10.10 x 4.37 x 0.99 cm;
    5. 59.9 gr;
    6. Slice, polished (matte) on broad faces;
    7. Weathering present on narrow faces, most concentrated on one of the longer faces;
    8. Good state of preservation;
    9. Published in www.encyclopedia-of-meteorites.com/meteorite.aspx?id=35310 ;
    Continue Reading

    M12.20091130

    1. RASC M12.20091130;
    2. Brahin, Pallasite, PMG, Gomel’, Belarus (52°30'N, 30°20'E), find 1810, 823 kg;
    3. Anonymous gift 2009 November 30;
    4. Two fragments: a) 0.462 x 0.429 x 0.249 cm; b) 0.559 x 0.462 x 0.163 cm;
    5. a) 0.065 g; b) 0.050 g;
    6. a) Irregular triangular form; b) irregular lanceolate form;
    7. Typical attractive yellow crystalline olivine inclusions in an iron-nickel matrix;
    8. Good state of preservation;
    9. Not previously published;
      Continue Reading

      M11.20091130

      1. RASC M11.20091130;
      2. Allan Hills 76009 (ALH 76009), L6 Chondrite, West of Allan Nunatak on the edge of the Polar plateau, Victoria Land, Antarctica (76°42'26"S, 159°07'43"E), find 1977 January 20 (U.S.–Japan Joint Antarctic Expedition), 407 kg;
      3. Anonymous gift 2009 November 30;
      4. Range of fragment sizes scale 2–4 (Wentworth size class=medium to very fine sand), largest fragment 0.2 x 0.2 x 0.15 cm;
      5. 0.041 g;
      6. Irregular forms;
      Continue Reading

      M10.20091130

      1. RASC M10.20091130;
      2. Zagami, Martian (shergottite), Zagami (Katsina) Nigeria (11°44'N, 7°5'E), witnessed fall 1962 October 3, ca. 18 kg;
      3. Anonymous gift 2009 November 30;
      4. Range of fragment sizes scale 2–3 (Wentworth size class=medium to fine sand), largest fragment 0.20.10.05cm;
      5. 0.02 g;
      6. Irregular forms;
      7. Colour range: N 7/ Light Gley to N 4/ Dark Gray (Munsell);
      8. ...
      9. Not previously published;
        Continue Reading

        MWr2.196100XX

        1. RASC MWr2.196100XX;
        2. Partially melted crystalline silica;
        3. Unknown. Paper label (on collection bag): “Bought from U. of Alberta for/$28. in 1961. Identified Dec. 18th/ 1974 by J.A. Mandarino, Curator/ Dept. of Mineralogy R.O.M.” Note that Mandarino’s identification is not directly reported, nor does it survive in written form elsewhere in the RASC Archives. The implication is that Mandarino identified the specimen as a “meteorite,” but that may reflect the interpretation of his words by the writer of the label;
        4. 6.5 x 5.3 x 2.87 cm;
        5. 83.2 g;
        Continue Reading

        MWr1.19XX00XX

        1. RASC MWr1.19XX00XX;
        2. Ilmenite (FeTiO3), possibly an Ontario find;
        3. Unknown. Whoever added it to the collection was undoubtedly misled by its mild magnetism and “dark” colour;
        4. 3.65 x 2.85 x 1.26 cm;
        5. 34.2 g;
        6. ...
        7. ...
        8. ...
        9. Previously unpublished

         

        The RASC MWr1 meteorwrong.

         

        Continue Reading

        Pages

        Subscribe to RASC RSS