Crowmagnum Posted March 26 Share Posted March 26 (edited) Hi folks, I'm new to the forum, but I've been keeping my eyes on the ground for a while now, looking for interesting rocks and fossils. Recently I dug up this big rock while digging a drainage ditch on my place here in Western Montana. I'm located up against the Garnet range about 4 miles from the Blackfoot river, around 20 miles east of Missoula. I have no idea what this thing is, or what the nodules (?) are. The rock weighs ~70lbs by my estimation, and it very smooth except where the weird bumps and lumps stick out. It is not limestone, as I tested a small scraping with vinegar. Some areas have quartz features. One local rockhound said that maybe its a ball of ancient mudballs or perhaps worm castings but he wasn't sure. I haven't found any other rocks around that look like it... Any ideas? It's so cool looking! Feel free to ask any questions. Crow IMG_7534.heic IMG_7535.heic IMG_7536.heic IMG_7537.heic IMG_7539.heic IMG_7540.heic IMG_7542.heic Edited March 26 by Crowmagnum Link to comment Share on other sites More sharing options...
Crowmagnum Posted March 26 Author Share Posted March 26 also, like I said, I'm new to the forum and I'm not sure the pictures are showing up as they should. Please let me know if you can't see them, along with any tips for posting them better. Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 26 Share Posted March 26 Please post them in .JPG format. The Forum doesn't display .HEIC files. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Crowmagnum Posted March 26 Author Share Posted March 26 9 minutes ago, Fossildude19 said: Please post them in .JPG format. The Forum doesn't display .HEIC files. Oh, sorry. I'll re attach: 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 26 Share Posted March 26 Looks like some form of chert or agate - cryptocrystaline or microcrystaline form of rock. May have been some form of sedimentary structures at one point. Not seeing anything recognizably fossil-ish in this piece, though. 1 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
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