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Showing results for tags 'vinegar'.
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Central PA, Mifflintown-Bloomsburg (undividied) Block collected from roadsite float. Its pretty variable, with a flaky/fissile layers alternating with slightly more cohesive ones. Lots of broken brachiopod bits. For an experiment to I dropped an unremarkable flake the size of a large coin in some vinegar and let it soak for a day. The flake had a couple brachiopod bits and I wanted to see if they would fall free or dissolve in place. The brachiopds disappeared and I was left with this (see pics). Of course I got really excited and thought I had an early fish spine, but now I think I dissolved a crinoid stem and what we see is the matrix that filled in the soft bits. What do you think? Total length is 3/4"
I have some Limestones full of fossil including fish teeth. Traveling all over our small home town to find the strongest "vinegar" I could, and first I saw a gallon at the supermarket was 5%. Pickling vinegar at Walmart - 5%. Cleaning vinegar at Home depot - 6%. They advertise on their web site 30% called "Ultra Vinegar" but no one in the store has a clue. Ive heard that 10% is what is used on the Gogo stuff. Please give me your thoughts, thanks!
Mediospirifer posted a topic in General Fossil DiscussionA week ago, on Thursday, I set some chunks of limestone in a vinegar bath to extract microfossils. Since my vinegar supply was low, I only filled the tubs halfway, and I left the lids off. My plan at the time was to return in a couple of days to filter the liquid, but life intervened, and by the time I could do something else with them, they were growing some rather pretty crystals! I decided to leave them alone and see what developed. Here's what they look like today: I think this one looks like caulifower: And this like a leafless forest: Unfortunately, the "cauliflower" fell off the rock after I took the picture, and some of the "trees" are falling down (which is why I decided to photo it today!), so it's probably time to decide whether to continue processing or try to preserve them as they are. I don't know whether these crystals will persist in the absence of a calcium carbonate-enriched solution or not. Just thought I'd share my unplanned chemistry experiment!
fossilized6s posted a topic in Micro-paleontologyI'm try to break down some hard micro matrix from the ATCO formation in TX. Its a rock solid clay, almost sandstone. Now there are some very tiny micros in this stuff and i don't want to cause any abrasion to them by just throwing them in a hydrogen peroxide solution. Do you guys suggest Muratic acid? Vinegar and baking soda? Or Hydrogen Peroxide? And what are some ratios you tend to work with? And how long do you soak them? Any and all help is appreciated by this micro noob!