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Showing results for tags 'silica'.
Found 14 results
Is A Blast Cabinet Required For Outdoor Air Scribing?
Megalodoodle posted a topic in Fossil PreparationI was wondering if a blast cabinet is required to air scribe fossils outdoors? (As long as one wears the proper PPE and safety equipment of course.) I’m trying to save some on my setup until I gather the rest of the cash needed to buy the blast cabinet and move my prepping indoors. And besides, the cold has never really bothered me anyways.
Beekitized stromatoporoid sponge?
SilurianSalamander posted a topic in Fossil IDFound at work among crinoid, brachiopods, silicified corals as well as a possible cephalopod and some silicified stromatoporoids. Silurian SW Wisconsin. Looks kind of like a cartoon bone in shape
Horn coral or bryozoan colony?
SilurianSalamander posted a topic in Fossil IDFound in landscaping gravel at a gas station on a 6.5 hour drive to Lake Huron for some fossil hunting. This is probably Devonian. Instinct tells me horn coral but it looks rougher than that and lacks visible septa at the top. Bryozoan colony? That’s my next best guess. Thanks! Love you guys.
Fossil or not?
Mozfet posted a topic in Fossil IDGood evening everyone depending on where you live. I'm new to rocks and fossils and I wanted to see if anyone knew what this strange rock formation may be. I live in Central Michigan where the rock was found. Attached images. Thank you much!
Any idea what these are
Hydroman posted a topic in Fossil IDFound these in alluvial sediments on the Eastern Shore of Maryland. They are silica but very odd shapes, almost look like teeth. Anyone have any idea what these are? Are they fossils or just oddly formed silica?
Pit stop into the Silica Shale - Paulding, OH
jort68 posted a topic in Fossil Hunting TripsHey everyone! Happy to finally be making another entry. Over the last couple of weeks I've been reading Richard Fortey's "Trilobite" and thus itching to get back into the field and see some for myself. Driving from New York to Chicago I decided to make a pit stop at Ohio's Paulding Community Fossil Garden and try my luck at finding some eldredgeops fossils. Here's what the garden looks like when you arrive: You're basically wading through fossils step after step. Here's the best of what I found, excluding some nice surface-collected brachiopods I've b
Valchion posted a topic in Fossil PreparationI have found this coiled cephlapod in Pennsylvanian age limestone in Missouri. I believe it to either be a temnocheilus or cooperoceras. I was wondering if there is anyway to tell if this fossil was silica. And if it was could it be prepped by using acetic acid. TIA!
Two crinoid columnal questions !
David91959 posted a topic in Questions & AnswersHello, I have many crinoid columnals that I collected in gravel (I suppose it was river/creek gravel collected and sold by a "sand and gravel" company) in Illinois many years ago. I have two questions that may be obvious to more seasoned fossil hunters/students. 1) Exactly how did the crinoids actually grow, meaning, how did the stems' diameter expand horizontally in size as time went on, since the stems were mostly composed of hard calcium carbonate/lime. In other words, it seems that once they are "hardened" or "frozen" into a certain size, how can they get bigger? Was the
Quartz replacement of algae
sTamprockcoin posted a topic in Fossil IDI picked this up today. I think its a silica (beekite ?) replacement of an algae formation or am I imagining it? Opinions appreciated. Btw its from a little Brallier Formation outcrop near my house.
Which Pseuodechenella Is This?
ClearLake posted a topic in Fossil IDI have a mostly complete trilobite that I found this summer at Paulding, Ohio (SIlica Fm, Devonian) which I had assumed was a Pseudodechenella lucasensis, partly because it looks like one and that was the only species of Pseudodechenella that I was familiar with from the Silica (granted, I'm no expert, I've just done some reading). But in looking at this specimen a bit closer and reading a few of the articles, particularly Stumm's 1965 description of the species, I'm having some doubt on the ID and want to solicit the opinion of the Forum. I know there are several Devonian trilobite enthusia
Northern Sharks posted a gallery image in Members Gallery
Help, please: Fulgurite or Fossil
Guest posted a topic in Fossil IDHi, I found this neat little thing near the Naugatuck, Connecticut river that recently flooded and receded from spring storms. Do you think it is a fulgurite, or something more "fossily"? I'll be waiting for your eminent opinions!
Hello all! It's been awhile. This bird bone was sticking out about 4" from the sand layer. They are getting so deep in the pit they are kind of past the fossil layer. This one must of washed down with the sand. So...figure Pliocene/Pleistocene..North East Simi Valley. Bird, but a big one!
Sylvannia Fossil Park
Herb posted a topic in Fossil Hunting TripsWent to Toledo this weekend to do some fishing in the Maumee River, (river was at near flood stage) Oh, well. Since we couldn't fish we went to the Fossil Park off Centennial Road in Sylvania, OH. 2 for 2 in the bad luck area. You can not use ANY type of digging tools except your hands and maybe a rock you find laying around. If you are familiar with the Silica formation the clay pretty much turns to rock or becomes so sticky you can't dig it. Plenty of piles of clay but no real way to work them. I found a couple of brachs but nothing else. I don't recommend the park for collecting unless you