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787 Views 5 Replies Last post: May 23, 2014 12:12 PM by MikeHardman RSS
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May 22, 2014 8:12 PM

Help to identify rocks/minerals

i am looking for help to identify some rocks i found and brought back with me from europe i live in canada.

i'm sorry in advance if made a mistake by posting link to my website, but i have some high resolution pictures of the rocks and to many of them so i figured better the link  then  uploading 50+ photos here is the link to see the rocks.


many thanks in advance



here i added a picture of each rock  for more detailed pictures, different angles and close ups see link above.(too many to upload here )






  • Currently Being Moderated
    May 22, 2014 9:11 PM (in response to groundedrocks)
    Re: Help to identify rocks/minerals



    It is very difficult to make useful IDs of your specimens from your (good) photos.

    And just 'Europe' as location data doesn't help much, I'm afraid.


    Many minerals are similar in external appearance, and dark ones can be especially difficult to tell apart, particularly from photos. To ID mineral species, we need to handle them, moving them in the light so we can gauge the shapes of crystals and the number and orientations of cleavages. Handling them also allows us to categorize minerals by lustre, fracture and colour. We might also need to test them for hardness, density, and their streak. Still, all that macroscopic examination may leave ambiguity. Microscopic examination is often necessary, using thin sections and plain and polarized light.


    So, as things stand, I can only give some vague pointers:

    1. metamorphic or hydrothermal mineral

    2. possibly a volcanic sinter, looks fairly modern

    3. quartz and pyrites, from a vein

    4. anthracite or obsidian (very different, I know)



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