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Rocks, Minerals & Fossils photo game

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    #62
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    Chert?


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    #63
    angeldaisy
    Moderators, Education Moderators Posts: 2,281 Mod ✭✭✭✭angeldaisy


    slowburner wrote: »
    Chert?

    possibly, it's either chert or shale with what seems to be glauconite mixed with it.

    It's a beautiful sight down in Slea Head in Kerry. Worth a visit:D


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    #64
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    angeldaisy wrote: »
    possibly, it's either chert or shale with what seems to be glauconite mixed with it.

    It's a beautiful sight down in Slea Head in Kerry. Worth a visit:D
    I was guessing chert for the greener rock btw.
    I like the way it fractures, as I am sure many a neolithic hunter-gatherer would have too. ;)


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    #65
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Is this game still going? i have a lovely rock!


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    #66
    kearneybobs
    Registered Users Posts: 3,923 ✭✭✭kearneybobs


    golden virginia wrote: »
    Is this game still going? i have a lovely rock!
    Yeah. post a pic of it and see if we can guess it.


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    #67
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Oh great. I'll take the picture of the rock tomorrow and post it. I cant do it tonight - the flash would interfere with the rocks sparkle!


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    #68
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    boards1.jpg
    boards2.jpg
    boards3.jpg
    boards4.jpg

    This was given to me by a mining consultant. It is a mineral ore ( maybe you can guess?) with other minerals and crystals growing on top:)


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    #69
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    Chalcopyrite?


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    #70
    Step23
    Registered Users Posts: 128 ✭✭Step23


    I second chalcopyrite (with calcite crystals?)


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    #71
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Chalcopyrite? - no its not the ore - although there may Chalcopyrite on one side of the surface.


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    #72
    Step23
    Registered Users Posts: 128 ✭✭Step23


    Its not pyrite is it?


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    #73
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    On the surface there is traces of Pyrite or Chalcopyrite. The main ore of the rock is ...... guess?


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    #74
    Step23
    Registered Users Posts: 128 ✭✭Step23


    This is becoming tricky. Is the surface of the sample golden in colour?

    The white crystals look like calcite, though equally coud be quartz, but I see what looks like a scalenohedral calcite crystal.


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    #75
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Step23 wrote: »
    This is becoming tricky. Is the surface of the sample golden in colour?

    The white crystals look like calcite, though equally coud be quartz, but I see what looks like a scalenohedral calcite crystal.

    No its not golden its dark silver colour but on one side there is a golden shine on top of the silver. The photo's dont show it but there are also tiny little crystals that are garnet in colour and other ones ameythst in color.

    Th white crystals are I would say quartz- they are far for translucent in real life than seen in the photographs. There are little mounds of a porous mounds also - maybe thats what you mean by scalenohedral calcite crystal.

    The main ore is silver in colour. As you may have guessed - i'm not an expert in rocks and minerals, except i have a few samples of this ore.


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    #76
    muckish
    Registered Users Posts: 610 ✭✭✭muckish


    GS..... Is it Irish?


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    #77
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    This sample is not Irish, its german as far as i know ,,, but the same ore was definitely mined in Ireland until 1980's (possibly still is in some parts of the county ).


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    #78
    muckish
    Registered Users Posts: 610 ✭✭✭muckish


    barite?


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    #79
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Your getting very warm!


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    #80
    muckish
    Registered Users Posts: 610 ✭✭✭muckish


    Zinc... final offer


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    #81
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Your close.. zinc / barite found alongside this ore,,, often, but its another metal than zinc.


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    #82
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    Galena?
    :pac:


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    #83
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    Yes its Galena!


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    #84
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    golden virginia wrote: »
    Yes its Galena!
    Duffer's luck :D
    Using my immense powers of reason I deduced that if it wasn't a copper ore it was most likely a lead ore. There aren't too many ores that were worked in Ireland up to the '80s.
    Copper, lead and zinc were mined not a stone's throw from my house (maybe even under it :eek:) until 1982.

    Not knowing anything about geology, this is a great way for me to become familiar with the mineral rich ores around here.

    Thanks for posting the pics.


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    #85
    golden virginia
    Closed Accounts Posts: 572 ✭✭✭golden virginia


    I grew up near the two mines in the Silvermines Mts in Noth Tipp - One mine was galena and the other barite. A new mine has opened at the other end of the mountains - a place called Lisheen - it too mines for lead and zinc ores. I am not a geologist but just am interested in rocks.


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    #86
    NotCarrotRidge
    Registered Users Posts: 160 ✭✭NotCarrotRidge


    golden virginia wrote: »
    I grew up near the two mines in the Silvermines Mts in Noth Tipp - One mine was galena and the other barite. A new mine has opened at the other end of the mountains - a place called Lisheen - it too mines for lead and zinc ores. I am not a geologist but just am interested in rocks.

    Silvermines had plenty of zinc as well (more than lead, actually). Galmoy is just up the road from Lisheen and also mines zinc/lead, with some silver credits. Navan is the only other operating mine in the republic and is also zinc/lead.

    There are a number of really good exploration projects happening at the moment, one in Clare and two in Limerick, although the two in Limerick are essentially the same mineralizing system, but being carried out by separate companies.


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