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Jack Kallmeyer replied to the topic brachiopods on limestone rock from ordovician in the forum What Is It? 6 years, 10 months ago
6 years, 10 months ago6 years, 10 months ago@pdon-pinkham, @egardner, @rnarducci, @rleder Noooo, do not use acid of any kind! The matrix and the fossils are are the same – calcium carbonate – so any removal of matrix will also dissolve the fossil surfaces. Typically with Brachs that are bonded into limestone matrix, the weakest plane between them is actually within the brach shell so me…[Read more]
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Rachel Narducci replied to the topic brachiopods on limestone rock from ordovician in the forum What Is It? 6 years, 10 months ago
6 years, 10 months ago6 years, 10 months agoHi, @pdon-pinkham,
I think preparation for this specimen first comes down to; what do you want the outcome to be? Are you hoping to remove all of the matrix around each individual specimen? If this was for my personal collection, I would probably keep the entire block intact and just scrub it down with a toothbrush and some water. Maybe chip away…[Read more]
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Eleanor Gardner replied to the topic brachiopods on limestone rock from ordovician in the forum What Is It? 6 years, 10 months ago
6 years, 10 months ago6 years, 10 months agoHi, @pdon-pinkham – Let’s get @rnarducci and @rleder to weigh in on this question. Do either of you have recommendations for prepping these fossils in limestone matrix? What concentration of acetic acid would you suggest?
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Kent Crippen posted an update in the group Welcome Committee 6 years, 10 months ago
6 years, 10 months ago6 years, 10 months agoWelcome to @pdon-pinkham, newest member of the myFOSSIL community!