Hey guys I had a pond dug last year and during the digging of the last deep hole at about 16' below ground level we ran into some very odd dirt. Not much of it but it was green/blue in color and had lots of black shark teeth and some dinosaur teeth in and around it. Plus it had alot of tiny clear stones in it and the normal quarts and other stones. What does not make sense is it looking like a kimberlite tube in a geological reigon that has no history of kimberlite tubes or diamonds. Anyone have a idea of what I have found?
Hey john I have tried three times to post a picture and I believe with dialup it's taking too long and not going through. Did I tell ya how much I hate dialup LOL But to answer your questions, yes it does look sedimentary because of the polishing of the stones and teeth. But I found shark teeth in it that wasn't polished at all and looked like it had just been pulled from the sharks mouth. The dirt isn't hard and not like any dirt I've ran across other than sifted dirt. thats how loamy the dirt is. very soft and not very compacted. I might be able to send you some pictures through an e mail if you'd like.
I figured it out LOL Anyway they were found in the flatlands towards the coast of south carolina just below florence. They have the graphite feel to them and they will cut glass. to give you an idea of how big they are the white part of the picture is 2 inches wide. so their not realy that big.
Google "Tinypic". It is a hosting website. You can upload your photos to them and they give you the option to resize. Its easy as pie and you get some links when the photo is uploaded. Use the "Links for Forums" link they give you, not the one labeled "Direct link". If you dont resize your pics, the mods will delete them or move them. It makes the site too hard to read for people with smaller monitors.
Just highlight the Forums link and <edit> <cut> Come here and <edit><paste> the link in your post. The picture will show up at its new size. Usually the 640x400 or the 800x600 size is best for this site.
Do NOT use Imageshack.us. It has been hacked and has more viruses than a third world outhouse.
Any kimberlite or lamprolite found in south carolian would be under hundreds of meters of ancient sediment deposits and would show no kimberlite tube shape. The north american craton I don't think reaches under south carolina anyways. Your biggest clue is blue clay which you said you don't see. That right there means it's not a kimberlite. I could tell you a little trick for spotting kimberlites from google earth but it wouldn't work since most of south carolina has little to no precambrian rocks, I think. I have more information to add but it's really irrelevant since what you have won't be a kimberlite "tube". I agree with auplater diagnosis. Remember also that most rocks will scratch glass. If you start to find some of these then we may be in business
Interesting. Diamonds are found in this region ,usually by gold miners as they are the ones concentraing everything in an area. A kimberlite pipe can be/have been just inches across. The quickest way to see if it might be a diamond in the rough? simply dip it in water. Water will not wet a diamond. (licking will not do, cause slobbers will stick)
Post by Dicky the Rockhunter on Mar 4, 2011 16:52:28 GMT -5
We have one of the few U.S.diamondnific kimberlite areas out here in Colorado / Wyoming border area. The pipes are noticed by seeing a circular area with no trees and the dirt is a greenish blue-- due to the main decompose rock left is ugly olivine, not peridot, and sometime morphs to serpretiene , also magnetite is there . . There are white spots present which contain diamonds. The sometimes hard to see circular areas also are slight depressions ( another clue is almost perfect round ponds ) that are the tops of the pipes. The kimberlite its self will not scratch many things and does scratch test as green. After complete decomp it is a dull green dirt not loamy that trees hate and only grass likes. My yard supply is still snow covered but should be open tomorrow and I will get some pictures.
Very interesting Dicky. Id like to see some of that greenish blue clay. Im attempting to locate the Gates-Adah Kimberlite pipe here in SW Pennsylvania to collect phlogopite mica megacrysts and pyrope garnets with an alexandrite effect. This kimberlite is known for being the only place in the whole Western part of PA to find ANYTHING besides sedimentary rocks and coal. The garnets there are very interesting. Of course though, no diamonds... Oh well.
Good luck finding some out your way.
Hike deep into woods, avoid bear attack, dig hole, cut finger, whine about finger, smash rock, extract crystal, rejoice!!!, repeat as neccessary.
Thats the color, most of the dirt was olive drab green and you could crumble it in your hands. not clay like. I've never had any luck posting pictures and I finaly figured it out only to be too big. Story of my life, I was born breach and everything has been backwards since LOL
Now if anyone wants to see these stones and may be able to identify them. I will be heading up to buckhannon wv monday up I 77 to I 79 north past charelston wv
I could stop by and we could have a look see as to what I have found.
Post by Dicky the Rockhunter on Mar 5, 2011 12:34:09 GMT -5
Just got the pics done and here they are.
Almandine dirt with some kimberlit pieces. the blue is mis-colored and is almost black
several kimberlite pieces note red is garnett
note whitish streak it is serpentine, reddish is Garnett,white is almandine, blackish is kimberlite,
garnets in kimberlite.
some info re kimberlite in N.C. from "diamonds and Mantle Source Rocks in Wyoming with other U.S. occurrences , Wyoming state geological survey investigation # 53
South Carolina - Sinkanus,1959 reported diamonds were found in gold placers in some of the states northern counties. Some vermiculite deposits in Enoree district , west of Kings Mtn belt ( Bergman 1987) interpreted as metamorphosed lamproites. and consist of phlogopite ,diopside,tremolite,(talc ) K-feldspar, apatite,sphene, monazite, and zircon that was originaly lamproite. Deposits in this region could provide diamond exploration also late Proterozoic to early proterozoic vermiculite occur throughout the Appalachian and Piedmont.
Interesting guys. I've been looking for diamonds in western NC for several years now. I have visited several pipes over the years; Lake Ellen MI, Ison Creek KY, Murphreesboro AR. Kimberlite varies quite a bit in appearance from place to place. I wouldn't waste a lot of time looking for indicator minerals as what you have is probably not a kimberlite. They form mainly in cratonic zones. in your area a lamproite is far more likely. Unfortunately lamproite usually has no easily recognizable suite of indicator minerals. As unlikely as it seems what I see in your photos does resemble a volcanic breccia and could be lamproite. One quick test you might try is to test the bulk specific gravity of the rock. Any competent geologist will tell you it won't work but if it's greater than about 3.0 it's probably ultramafic. I am guessing that what amguy is referring to and Dicky mentioned is that on serpentine soils (derived from ultramofic rocks) most plants don't grow well. In GE you may well see an area of significantly different plants, stunted trees etc. If you have access to frequently re-imaged data look at spring/fall images they usually show the greatest contrast. Finally Most of NC has been mapped by aeromagnetic surveys. I am guessing that your area is fairly quiet magnetically. (My area is not). If you have indeed an ultramafic outcrop of any size it may show up. The magnetic surveys were however at pretty widely spaced flight lines. Be happy to help you find the data and software to do this.
Some further thoughts; Finding sharks (dinosaur ?) teeth in a kimberlite/lamproite is very unlikely. Amguy is correct such a pipe is not at all likely to outcrop at the surface in your area. A good site to find pics of kimberlite/lamproite from many sources is: www.personal.psu.edu/jla210/Homepage/Photos/diamonds/diamonds.htm
Post by Dicky the Rockhunter on Mar 12, 2011 8:34:35 GMT -5
the heat of a forming kimberlite pipe would burn teeth and organic material . Remember the pipe is a differentt form of a volcano and comes from the core and is in the form of a funnel. topaz would also not be a part Dicky
Dicky the Rockhunter My theory is banging a rock reduces stress/anger , sure beats a head shrinker
I cannot speak directly about shark teeth but mammalian teeth in near surface deposits would not be destroyed by the temperatures normally encountered during kimberlite/lamproite emplacement. Remember that the emplacement of these kinds of pipes normally produces a diatreme. A diatreme is a volcanic pipe produced by an explosion which accounts for the champaign glass shape of the pipe. Whether the rapid expansion is caused by the volatile gasses dissolved in the magma or by ground water encountered near the surface the effect is the same, the magma expands rapidly to a considerable volume and becomes frothy. This allows chunks of the near surface rock to become entrained in the pipe. This is an adiabatic (no heat is gained or lost) process and since the volume has increased the temperature must decrease. Researchers have for many years used various techniques to gauge the emplacement temperatures of kimberlites. Among the first attempts to do so involved analysis of coal bits found in kimberlite. More recent investigations have looked at remnant magnetization of mineral grains. Temperatures measured have ranged from 300 deg C to 550 deg C. Teeth will survive 300 deg for a long time.
Dinosaur teeth? I wish 01chief would send me a few of these. Since the surface coastal plain deposits are mostly tertiary or later (though underlain by triassic and cretaceous) and if in fact what you've found are dinosaur teeth that would imply that they were brought up from below. Kimberlites and their kin are notorious for mixing strata. Nevertheless this is a passive plate margin and any recent volcanism is very unlikely. I’ve had people bring me old pieces of concrete thinking that they were kimberlite.
Post by crystalchemy on Mar 15, 2011 12:57:12 GMT -5
when I was doing gis maps I had access to all the USGS geodata files, which can be manipulated to coorelate data to show probable locations of interesting deposits. really anyone can access these files but you need ArcMap to put all the info together in a useful format.
Sorry I havn't been back guys but Dicky has posted an exact photo of the dirt I dug up. It's the first picture (almandine dirt) I still have a 5 gallon bucket of the dirt I havn't sifted through yet, but thats it !! ulao, I sent you a message
Post by mikeyrocks on Jun 24, 2012 13:57:52 GMT -5
Hiya folks been away traveling and just read this.....I'm with leonardo .... topaz is hard & found in NC. My Mexican Topaz crystals are diamond shaped and have a termination point on the ends not cubic/square. Most of my NC Topaz is small alluvial pieces. Also I don't see anyone mentioning the cubic shape of diamond crystals. 01chief ... what are the shapes, surface, breaks edges in these possible diamond pieces? I have no experience in the kimberlite area at all...so I'm no help there. Thanks for all the info everyone.... makes for great education and reading.