September 16, 2019 at 2:35 pm #60285Sadie MillsKeymasterSeptember 16, 2019 at 4:11 pm #60286
@sadie-mills @carl-lewis A lot depends on the preservation material for the trilobite. Most will be calcitic and will be adversely affected by any chemical cleaner that will dissolve limestone. To remove loose or soft shale or mud a toothbrush with water and an optional mild detergent will help. If the limestone matrix is covering part of the trilobite there is no free lunch . . . air scribes and air abrasive cleaning by an expert preparator are required. Inexperienced use of these tools can ruin a fossil in the blink of an eye.February 4, 2020 at 2:05 pm #64611February 5, 2020 at 1:12 pm #64623
@samantha-ocon I am sorry I can’t offer any help along those lines. I don’t use this type of equipment as it isn’t generally needed for most fossils around here. “hard core” people who do lots of this type of work are the ones who use these. If you do get one of these remember that you still need a strong suction device pulling away the material so you don’t breath the fines. These fines can cause lung damage even many years in the future.
JackFebruary 5, 2020 at 2:24 pm #64624
@samantha-ocon I could check to see what they use in the Cincinnati Museum prep labs. Maybe that will help. I am laid up with a foot injury so I’ll have to get one of my friends to check.
JackFebruary 6, 2020 at 3:09 pm #64644
The normal tool we use is Chicago Pneumatic scribe which comes in any number of sizes depending on what you want to use it for. Paleo Tools has a wide selection of the Chicago and also services them. We have a coarse one for removing bulk matrix and a finer tipped one for finer work. Invertebrate paleo has some new tools that they call “German” which are Universal Tool air scribes UT8617. I was told they were around $900 apiece but online I see them listed for around $255. The Chicago runs around the same.
I hope this helps
JackFebruary 11, 2020 at 4:43 pm #64840
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