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Thread: ID for rock/iron ore? from thailand

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  1. #1

    Oct 2016
    4 times
    All Types Of Treasure Hunting

    Post ID for rock/iron ore? from thailand

    Hi all,

    I don't have a lot of geologic knowledge, and i would appreciate some help to ID this rock. (looks like iron ore, but is it hematite, limonite..?

    I've found it in a garden lying there; I saw tiny yellow crystals on the surface, so i broke it open, and saw these small yellow cubic crystals. I don't know if its gold or pyrite or something else. I did not find a single picture of iron ore with these cubes inside....

    Also, is it woth searching the area for more of these?

    Thanks for your help, i will answer any questions i can.

    The shiny grey part is where i cut the rock)

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    Vincent Vial
    Last edited by Vincent Vial; Oct 14, 2016 at 05:40 AM. Reason: details
    Rogue Relic Hunter and vpnavy like this.

  2. #2

    Nov 2012
    GPZ, GPX, CoRe, GB2
    50 times
    All Types Of Treasure Hunting
    Think you are right, iron ore, looks like limonite after pyrite in hematite. Streaks should settle it.

  3. #3
    Fly Navy!

    Jun 2008
    York County, PA (USA) Brevard County, FL (USA)
    12987 times
    All Types Of Treasure Hunting
    I noticed this is your very first post Vincent - so, Welcome Aboard!
    .:: We SaluteOur Veterans ::.

    "A free people ought to be armed." - George Washington (January 7th, 1790)
    ..: Criminals obey "gun control" laws in the same manner politicians follow their oaths of office :..

    .:: Rules and Guidelines ::.
    .:: NOTICE - You must be a Charter Member to sell on Treasure Net (Forum: Charter Member Classifieds) - NOTICE ::.

  4. #4
    Gangsta Soren

    Apr 2015
    Parker, Colorado
    Minelab Go Find 60, Bounty Hunter Sharp Shooter II
    55 times
    All Types Of Treasure Hunting
    If Jason is correct and this is limonite after pyrite then yes, it us worth going back for more. I love pseudomorphs

  5. #5

    Oct 2016
    4 times
    All Types Of Treasure Hunting
    Thank you all for your feedback

    The streaks were : redish-dark brown for the iron, so i guess hematite, and/or limonite.
    The crystals are definitely pyrite : dark grey streak.

    I forgot to say that it comes from Koh Samui, Thailand, if that interest anyone..
    My range is limited to Koh Samui and Koh Phangan, so if anyone has info for that particular zone, i would be interested

  6. #6

    Oct 2016
    48 times
    You already know what it is. There is a granitic intrusive that makes up you're two islands. Metals like antimony, iron, lead and zinc could all be present. Silver is also a possibility. Unfortunately sedimentary host rock for such a deposit is below water. Look in the south-west part (Na Mueang waterfall to the Conrad Koh Samui) of Koh Samui for interesting rock and minerals. Also look at the streams leading away from the mountain for garnet, it should be small and difficult to spot with a naked eye. Pay attention for any transparent minerals... Good luck.



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