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Found 18 results

  1. Folks on mindat.com suggested asking this question here! This is less of a "what is this a fossil of" question and more of a "is this possible" question. I have a small chip of translucent chalcedony showing a mass of white inclusions, two of which look very much like a grass seed-head. The gist of the conversation so far has been 'is it possible for fossil material to be an inclusion within a silica mineral like agate or chalcedony?' As opposed to an agate-replacement or opal-replacement fossil like an agate limb cast, agatized wood or agatized/jasperized opaque mudstone with intact fos
  2. Top Trilo

    Fossil in Chalcedony?

    I have this piece of chalcedony that I polished years ago in a tumbler. I always thought inclusions were automatically mineral or geologic but a recent thread said that is not always the case so I am wondering if any of these inclusions are biologic, thanks for your help. Oh and there is also an air bubble (last photo) not sure if that means anything
  3. Hi guys! I am looking for new areas to hunt for rocks and fossils around the KC area. I have been to the Blue river, Kansas river, Cedar creek, Tuttle creek, Perry Lake, Mill creek, and abandoned quarry areas. Anyone have any general locations of where I can find some stuff? I am an avid hunter for all sorts of fossils and rocks (rockhounding is my favorite past time)! I've had the most luck at the Kansas river and Perry lake. Some of my finds include cow skulls, cone coral, shells, agates, vertebrae, and a bunch of druzy quartz geodes and chalcedony. I ha
  4. WI-fossil-guy

    BOTRYOIDAL CHALCEDONY QUESTION

    I have some, what I believe to be, calcareous tufa. I will be posting photos of different specimens over multiple posts and days. All specimens are in partially composed of botryoidal chalcedony. My main question has to with the fact that botryoidal chalcedony is a known pseudomorph in marine fossils. Many of my specimens look like they could be stromatolite-ish or algae-like. Does anyone have knowledge or experience with botryoidal chalcedony and its association with fossils? Can stromatolites or algae sediments become pseudomorphed into botryoidal chalcedony? The calcareous tuf
  5. Sometimes, when you go on a fossil hunt, you find more than just fossils. Some friends and I traveled to southeastern Iowa in Spring '18 to scour the Mississippian for fossils, but while there, we noticed that many of the homes that we drove by sported geodes in their front yards. Intrigued, we decided to investigate for ourselves. As it turns out, the area is well-known for its geodes (Iowa's state rock is the geode), so we promptly decided that we had to collect some for ourselves. We eventually found a privately owned piece of property where we could fill a bucket with geodes fo
  6. Hello all! I am new to this forum and just started getting interested in rocks and fossils. I went out to Wyoming last weekend and found a lot of really nice agates and fluorescent minerals but I also came across what look like some pieces of chalcedony with these white tubular inclusions in them. I first just saw the shell imprint in the rock so I pocketed it, but later when I looked closer noticed the white webbed tubes. I posted these pictures on reddit in r/fossilid and got a few responses telling me that they are Bryozoans. I looked this up and it looks right to me!
  7. I don't know if this is the best category to post this under, or should it go under 'Member Collections' as the items are now part of my collection... A week ago already (Saturday), a couple from the local rockhounds had a garage sale. I think much of the material belonged to the club as these folks had been hosting the club's workshop equipment and it was being moved out to a new place. They said "There are some fossils"... but couldn't say what kind. Unfortunately they couldn't tell me much about the locations, not being fossil people who are careful to record that sort of i
  8. Shellseeker

    Its always Interesting

    The Peace River is a magic place, It always has surprises in store, even when I am finding little that is Spectacular!! Look at this selection found while hunting today. Some NICE Hemis, a flake from tool making, even a wild boar tusk (hollow inside and modern) and then The botryoidal translucent brown mineral growing on the fossil is chalcedony. Chalcedony often fills the empty spaces in fossils, especially wood and bone. Did I mention a calcified sea urchin spine .. NEAT !!! Even got 1 Meg (very 1st find of the day), and a couple of calcified Barn
  9. Arizona Rex

    BIO-logic or GEO-logic?

    Found this on a desert walk southwest of Tucson, Az. Cool find.....is it possibly some kind of fossil, perhaps a fossilized structure similar to septarian formations, or just a cool looking little rock? Thanks for any and all help.
  10. Fossilz

    Crystal agate fossil?

    I found this today on the beach under a clay cliff, it is known for agate And chalcedony to be found on this beach, what would I call this, it looks like some sort of a bone maybe?
  11. A trip to Haute Normandie cretaceous cliffs ( The plasterers' balad ) - Part 1 During three days we travelled along the Haute Normandie coast. The area we ventured in is cretaceous : cenomanian (-99 MA), turonian (-93 MA) and coniacian (-89 MA), following the west to east dip. Day 1 : Antifer We met in Saint-Jouin de Bruneval, on the beach parking lot next to the oil terminal. We started the trip at 9 am, so we could hike quite far before the tide would stop us. Sky was shiny and quite fast the temperature started to rise. We mostly spent the morning
  12. Chould this stone be a fossilized toe bone of a big animal? The first photograph is top view, the second is flashless angled top view. We have a lot of Agatized and Partially Agatized Bones. They are translucent chalcedony. But this part is not chalcedony. It may be at the first stages of the fossilization.
  13. EchoBravo

    Coprolite or Chalcedony?

    I found what I thought was originally a giant superior agate. After cutting it and didn't see any fortification I labeled it common Chalcedony. Then I read an article about Coprolites in my Rock & Gem mag. and they had a carving that looked exactly like the inside of my.. what I thought was chalcedony. Being more of a rock guy than a fossil guy I thought I would try and get some expert advice on its identification. Here is why I think it might be coprolite. 1. superior agates are formed inside of basalt cavities and weathered out which leaves impressions on the outside.. (none I could
  14. Ray Eklund

    DSCN3022

    From the album: Adventure is an individual thought!

    These are the most unusual chalcedony forms to find in the World. Here is one laid upon some pine needles. Some spots will have so many, you will have to pick only the most interesting ones! Have a collecting bag around your neck to put them into it. Have a walking stick to hike with, do some prodding in thick pine needles. We have seen some rattle snakes, actually one, but it was nearly five feet long a Basalt ridge. Just be aware. Wonderful camping. Well maintained roads. Gasoline, groceries and water to be found in Reserve. On a map draw a fifty mile circle and you are just beginn
  15. Ray Eklund

    DSCN3021

    From the album: Adventure is an individual thought!

    This is a typical flat to find loose chalcedony. There are areas of Basalt and Rhyolite that you will find the sources of all of the agate and chalcedony. Once you understand lava flows from the Oligocene volcanics... you are on your way to finding the most unusual chalcedony in the world. Step into a Forest Service Office, get the large scale Forest map(s) you need, inquire as to where a good area to begin looking might be... and you are on your way. Make sure you mark where you camped... so you can find it next time and finish looking over the beautiful hillsides.
  16. Ray Eklund

    DSCN0799 1

    From the album: Adventure is an individual thought!

    Have your dogs pack the water into the back country and pack the finds back to camp. There are so many areas to find agate and opal that you just find a nice camping spot and begin to prospect by walking... and walking... and walking. Even "Apache Tears" can be found north of Snow Lake. Bring a bag to carry them. These are the size of a dime to quarter. The dry creek beds and hillsides are a good place to start... north of Snow Lake are some nice camping spots and the hills further north have the Apache Tears washing out in the dirt roads!
  17. Ray Eklund

    DSCN2457

    From the album: Adventure is an individual thought!

    Reserve, New Mexico is the center hub of agate hunting. Luna, New Mexico. Apache Creek, New Mexico. A thousand square miles of the roughest terrain in New Mexico. Bring a GPS so you do not get lost. Go further south to Glenwood Springs and check out the mining districts. Silver City and the copper mines are not too far away. Visit the Gila Cliff Dwellings. Worth the drive.
  18. I finally made it back to one of the most beautiful places to look for one of my favorite fossils - Agatized Coral from the Tampa Bay area. I only had one evening and one morning to search and these are some of the smaller pieces that I have. I brought back about 50 pounds of beautiful corals- most of which I need to cut. Can't wait to see what is inside! If any of you have suggestions for cutting it properly I would love to hear your methods. We had a hammer with us but it became clear we were just shredding the coral. I am thinking of using a wet saw to get some clean cuts. If you are not
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