Abbott, D.H., Gerard-Little, P., Costa, S. and Breger, D., 2009, March. Odd CaCO3 from the Southwest Indian Ocean Near Burckle Crater Candidate: Impact Ejecta or Hydrothermal Precipitate?. In Lunar and Planetary Science Conference (Vol. 40, p. 2243).
Unusual carbonate crystals from the vicinity of Burckle Crater candidate may be impact ejecta or hydrothermal precipitates from ridge crest vents. However, they occur with translucent C impact spherules, native metals, and well preserved mineral fragments and glass.