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Found 18 results

  1. I'm a mineral collector rather than a fossil collector, but this gastropod replaced by chalcedony has one foot in each camp. It was labeled (by a mineral dealer) "Turritela fossil snail" with a locality given only as Morocco. It'd like to come a little closer taxonomically if I can. Any ideas? Thanks in advance. Edit: Forgot to include its dimensions: 24 mm tall x 15 mm diameter
  2. Arizona Rockhound

    Agatized Coral?

  3. Michael Marinelli

    Agatized Coral from Tampa Bay

    Found this coral head today where I’ve found other agatized coral in the Tampa Bay area in FL. To me it looks suspicious, it has a slightly blue color around its edges and has some botryoidal formations on the outside. It’s not super lightweight though, so I don’t think it’s hollow (or completely hollow). Does this look like it’s worth cutting? Is it likely to have any voids or botryoidal formations inside based on other agatized corals you guys have seen? recorded-478291984396.mp4
  4. Betsy5758

    Northeast Missouri Bone ID

    New to fossil forum - 1st post! I read info for nubs & tried to follow with clear photos with measurements. I found this (what looks like to me) bone loose in a partially dry creek bed in St Louis, Missouri county. Fossilized with chalcedony? Distal femur?
  5. Geojonser

    Fossil or stone?

    Hello I found these near a river in Germany. In the state North Rhein Westphalia in the High Sauerland District. At first I was sure they were Chert nodules, but while examining the larger piece, it looks as if it is two halves. I am thinking now that they are both Chalcedony. Translucent with no bands. The bigger piece is the more interesting piece. It is palm size. The small piece If they are fossils, my best guess is oysters. Thanks.
  6. Geojonser

    Wood?

    I found this piece while walking along a building in Northern Germany...first I thought, "Huh?...this looks out of place"...I thought it was just a weather-worn veiny stone...Then I picked it up, saw the fractures and thought, "Wow!, what a nice piece of Chert or Chalcadony (va. Jasper) what are you doing here?"...The fractures are heavily weather-worn, conchoidial, opaque and with a dull luster... After a while I began thinking that the shape, weathering and banding/striping was a bit unusual (mostly opinion at the time)...I wondered if it might be a fossil...a big Brach maybe? Photos courtesy of the Google ...unlikely After seeing close-ups while cropping the pics to post here, I thought, "Hmmm...I got wood?"... It kinda looks like petrified bark to me now, but its "grainy or veiny" on both sides, which seems strange, to me, for a piece of bark... Probably purely geologic combined with wishful thinking...it happens...although, if it is geology, it would be cool to come across a Genisis Jasper where it should not be Photos courtesy of the Google ...ooops...doin' it again...sry Anyway, either way its a beautiful specimen with an interesting story... Any ideas or opinions?...thoughts will be greatly appreciated...thanks in advance... Have a nice day
  7. 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 familiar with it, this site does a nice job explaining it. http://raysrocksandgems.com/Withlacoochee_Coral.html
  8. arationallens

    Could it be a skull?

    A long shot but I thought I would post just in case.
  9. 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 fossil imprints of leaves and fish. Because pseudo-fossils in chalcedony are so common, with organic-appearing moss, dendrites and "garden" quartz mislabeled as fossil material all the time, there is a knee-jerk reaction of "never." But, am wondering... is it mechanically impossible or just highly uncommon? It has been suggested it may have formed in association with a mineral-rich hot spring, first as opal, then as agate. This was found in the John Day basin, Antelope/Ashwood area of central Oregon, in a drainage downslope from a 15-square mile basin that is ringed with lahar palisade formations (think Clarno palisades from John Day Nat. Monument.) The area has standing agatized tree trunks 5 feet high and 2 feet thick, and is full of smaller petrified wood and plant fossils. Age is 30-40 million years, in an overlap between John Day and Clarno formations. Private property, with permission. Apologies for the quality of the photos, am taking pictures with a phone through a hand lens.
  10. 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
  11. 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 have included pics of some of my finds - the petrified wood was sanded down and polished up to 3000 grit. Any suggestions are GREATLY appreciated!!!!! Much love KC!
  12. 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 tufa rock that I will post in this message is definitely fossiliferous. You can plainly see three small marine fossils on the bottom-side of the fossil (What might they be?). Two are casts and one is a mold. Generally this rock is "bowl-shaped" overall with a convex top and a concave underside. The rock's top surface is covered with botryoidal chalcedony. There is a smaller amount of botryoidal chalcedony on the underside. Could the botryoidal chalcedony be a psuedomorph fossil? The first photo (#1) shows the rock's upper-side; The second photo (#1B) shows the underside; The third and fourth photos (#1C & 1C-2) are the same fossil object (cast, about 0.5 mm): The fifth and sixth photos (#1D-1 & 1D-2) are the same fossil object (cast, about 1 mm): The seventh and eighth photos (#1E-1 & 1E-2) are the same fossil (mold, about 1.5mm):
  13. 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 for about $20, descended upon a stream cutting into the bedrock, and filled a bucket in short order. Then, on a return trip to Iowa a month later, we found another outcrop of geodes along the Mississippi River. Once again, we collected handfuls. Then, once we got back, we split them with a geode cracker. They varied in quality; some were stunningly beautiful, and others were less so. They were filled with all manner of minerals: some had chalcedony fillings; others had quartz crystals, and still others had minerals that I didn't recognize. The colors varied, too: pink, white, light blue, red, and brown. As it turns out, we were a little overzealous in our efforts; we collected about 50 pounds of rocks. We've given them away to as many friends would like them and have only just now run out of them a year later. Pictured below is a fraction of the haul. If you happen to find yourself in this neck of the woods, then remember: the Osagean of Iowa and Illinois has more than just crinoids. If you would like more information on them, where you can hunt for them, or even the annual Geode Fest, then check out this link. http://keokukiowatourism.org/geodes/index.php
  14. 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! My question is this...all of the pictures of fossilized bryozoans I have seen look very traditional (in sedimentary rock). Is it usual to find them embedded in silicate like this? I cannot find one other example of this on the internet which makes me think that maybe this type of specimen is called by a different name and that I am just not searching for the right thing. Anyways, any help and insights would be much appreciated! I am going back out to Wyoming this weekend to search some more and would love to know exactly what it is I am looking for! Thanks in advance for any responses! Erik
  15. 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 beginning to find places to hunt. Most are to the north, east and west of Reserve. The locals will help you figure out where to begin.
  16. 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.
  17. 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!
  18. 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.
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