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Posts posted by d_day

  1. 1 hour ago, IS_IT_SANDSTONE said:

    Interesting. Now do the repeating layers represent seasons or something like the rings of a tree?

    They would, if it were sedimentary. Gneiss would not be, but schist might be. Most schists are metamorphosed sedimentary rocks, but can sometimes be metamorphosed igneous rocks. 

    When there are seasonal layers in sedimentary rocks, they are called varves.

  2. 19 hours ago, Adolf said:

    Ok ,  now you know lunar is sedimentary. You sure your qualified to do this job?


    Wait, you think posting a screenshot from Wikipedia, which says that lunar rocks are igneous, somehow proves that lunar rocks are sedimentary? You are either completely delusional, or you’re trolling us. I don’t think you’re trolling us. I am genuinely concerned for your mental health. Please seek professional help immediately.

    • Like 2
  3. 31 minutes ago, Kluttgeharm said:

    Can limestone have Crystal's on it? We have prices that have lime small bombs that are sparkly

    Limestone can exhibit crystals depending on how it formed (e.g. travertine). The others you have that don’t fizz with the vinegar may be heavily abraded agates. 

  4. 6 hours ago, Stillweaver hillbelli said:

    I think it is coral or sponge fossil.

    A sedimentary rock would not be porous like that.

    Pumice would not scratch glass or have those straight lines. Only a harder mineral or rock could do that.

    Sedimentary rocks can be quite porous, particularly those whose deposition is from evaporation, like travertine.


    • Like 1
  5. 4 hours ago, Bawaayce said:

    Are there two Mikestangs'?

    Mikestang1 May 29th "If this is an iron meteorite, any misshaping of the pieces happened when it exploded and would not have occurred on the ground.  The forces required to bend and twist solid iron are much greater than can be produced by a terminal velocity impact of such a small piece of metal."

    Mikestang2 June 29th "To me, that piece of iron has zero appearance of having hit anything, let alone slamming into solid concrete at terminal velocity as you imply, but that's just my opinion"

    I think your efforts would be more appreicated in the lunar cooling thread.

    Nothing about those two statements is contradictory. 

  6. 6 hours ago, rinke11 said:

    wow sounds facinating but you are sure its a fault breccia because I looked for images and they look like a whole different stone and the gray lines are not gray in real life they are white and look like white crystal

    It can happen to any stone, and can be cemented with virtually any mineral. Pressures on the stone cause it to crack. Mineral laden water seeps through, leaving behind whatever mineral it was carrying, which cements the pieces back together. 

    • Like 1
  7. 2 minutes ago, Gooch said:

    Would you say 100 percent It isn’t ? As I don’t want to pass on the bad news.

    are there any tell tale signs that it isn’t a meteorite ? As I said I have zero knowledge in this field as my expertise is metal detecting ancient coins

    For starters, meteorites don’t have large bubbles in them, this is a typical feature of slag, and of vesicular basalt. Both can contain enough iron to attract a magnet, which often leads to confusion among beginners and novices since that’s a diagnostic of some types of meteorites. I’m no expert on meteorites, but I’ve seen enough meteor-wrongs of this type to say this is terrestrial in origin.

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